CLL Testing Archives

Testing is an ever-present part of the cancer journey, helping identify stage, treatment options, progress, and potential recurrence. Testing can also introduce a whole new vocabulary into your life. Don’t let jargon overwhelm you or undermine your grasp of test options and results.

We can help you evolve into an informed Chronic Lymphocytic Leukemia (CLL) advocate who understands results and how to use testing as a conduit to the most personalized care.

More resources for Chronic Lymphocytic Leukemia (CLL) Testing from Patient Empowerment Network.

IGHV-Mutated vs IGHV-Unmutated CLL | What’s the Difference?

IGHV-Mutated vs IGHV-Unmutated CLL | What’s the Difference? from Patient Empowerment Network on Vimeo.

What’s the difference between chronic lymphocytic leukemia (CLL) that’s IGHV-mutated versus IGHV-unmutated? Expert Dr. Ryan Jacobs explains tests involved in CLL diagnosis and treatment options.

Dr. Ryan Jacobs is a hematologist/oncologist specializing in Chronic Lymphocytic Leukemia from Levine Cancer Institute. Learn more about Dr. Jacobs.

Download Resource Guide   |  Descargar Guía en Español

See More from START HERE CLL

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CLL Patient Expert Q&A: Start Here

CLL Patient Expert Q&A: Start Here

Diagnosed with CLL? Start Here

Diagnosed with CLL? Start Here

Is It Aging or My CLL?

Is It Aging or My CLL?


Transcript:

Lisa Hatfield:

“What is the difference between IGHV-mutated and IGHV-unmutated CLL? And can you talk about treatment considerations for those?”

Dr. Ryan Jacobs:

Yeah. So that’s part of a bigger discussion around the prognostic work-up of CLL and not all CLL is the same, and we’ve done a really good job of figuring out tests to separate out the CLL patients that tend to behave more aggressively and respond to certain kind of therapies, versus those that are more of what we call indolent or slow growing and respond to other kinds of therapies. I do want to say, I haven’t mentioned it yet, we still don’t treat CLL if it’s not causing any problems. And about half of patients get diagnosed as sort of an accident and they get a blood test for something else and their white count is elevated, and that leads to a diagnosis, but they feel fine.  We still leave those patients alone. Even with these good treatment options we have, we recognize that there are a select percentage of CLL patients that don’t ever need treatment, and so we don’t just want to start treatment in everybody. But I do still like to check this prognostic work-up, even if I’m not going to start treatment, but I make sure and ask the patient if that’s what…in line with what they want.

But certainly, if you’re going to start treatment, you’re required by guidelines to check a prognostic work-up, and I would really encourage the CLL patients tuning in to ask their oncologist, “What is my prognostic work-up?” if they’re going to start treatment. Because of the oncologists, unfortunately that have to deal with lots of other cancers, maybe don’t always know the right test to send. I’m very spoiled in that I get to just treat lymphoma and specifically focus a lot of my research in CLL and get to stay up with all this. I don’t know how a general oncologist keeps up with everything, honestly.

But the big three tests are going to be the FISH analysis, fluorescence in situ hybridization. And then IGHV mutational analysis, and then also a TP53 mutation analysis. And I don’t really have time to go through all of those, but IGHV is the question I get a lot. “What is that?” It’s one of these rare findings where it’s actually normal to have a mutation at the IGHV. IGHV stands for immune globulin heavy chain variable region, and it is usually mutated in B lymphocytes because it’s part of the process of a mature lymphocyte that is able to make a lot of different kinds of antibodies. And it undergoes somatic hypermutation, is what it’s called, as the B cell matures.

Generally in oncology, the more mature a cancer is, the less aggressive it behaves and usually the easier it is to manage, and that is the case with CLL. So think of an unmutated IGHV CLL cancer as a more primitive or a more immature cancer clone, and as such, it is harder to treat. In about half of patients will be found to be unmuted at the IGHV and historically, all we had was chemo and we knew these patients weren’t going to respond for nearly as long as the IGHV-mutated patients were to chemo. What’s nice is, with our targeted treatments, particularly the long-term data with the BTK inhibitors, it doesn’t look like it matters whether you’re mutated or you’re unmutated. So that’s one of the really great things with our new treatments for CLL, is it has, the people that have benefited the most are the ones that were doing the worst, so that’s great. It’s not just the patients that were already doing well, that are doing even better. 


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Diagnosed With CLL? Start Here

Diagnosed with CLL? Start Here from Patient Empowerment Network on Vimeo.

What do newly diagnosed chronic lymphocytic leukemia (CLL) patients need to know? Expert Dr. Ryan Jacobs explains how CLL occurs and provides an overview of treatment types. 

Dr. Ryan Jacobs is a hematologist/oncologist specializing in Chronic Lymphocytic Leukemia from Levine Cancer Institute. Learn more about Dr. Jacobs.

Download Resource Guide   |  Descargar Guía en Español

See More from START HERE CLL

Related Programs:

CLL Patient Expert Q&A: Start Here

CLL Patient Expert Q&A: Start Here

IGHV-Mutated vs IGHV-Unmutated CLL | What’s the Difference

Is It Aging or My CLL?

Is It Aging or My CLL?


Transcript:

Lisa Hatfield:

There’s a lot going on in terms of novel therapies and new options. But before we jump into all of that, the tool box that’s expanding, can you introduce CLL and provide an explanation of what it is and what that means for a newly diagnosed patient?

Dr. Ryan Jacobs:

So chronic lymphocytic leukemia, or CLL, is the most common chronic lymphoma/leukemia. It is really both most of the time. It presents with what we call lymphocytosis, meaning the white blood cell count, and specifically the lymphocyte count is high or elevated. To call it CLL, to make that formal cancer diagnosis, we can generally take a patient’s blood sample and put it through a fancy machine that we call a flow cytometer, that looks for characteristic markers on the outside of the cells, and if there’s a bunch of those cells, we call that a monomorphic population.

So a bunch of those cells that look the same, and they’re B cells, that’s the type of lymphocyte count they are, and they’re over this threshold of 5,000. Then that is the diagnosis right there, we don’t need an invasive procedure. You generally do not need a bone marrow biopsy or a lymph node biopsy. There is in about 15 percent of cases, the disease presents with just in large nymph nodes, and the white count is normal. We call that small lymphocytic lymphoma. It’s considered an overlap with CLL, and I’ve had many patients that have started off with SLL and then eventually manifest elevated lymphocyte count later in their disease course. So it is considered an overlap, the treatment is the same for both of those disease entities.

So that’s the diagnosis of CLL and how it generally shows up initially. In a nutshell, it’s a cancer of the aging population, average age is 70. I have a lot of patients that ask me, “Why did I get CLL?” And the answer is, “We don’t know.” It’s that way with most cancers, unfortunately, we don’t know why one person gets a cancer and the other person doesn’t.

But it obviously has something to do with the aging effect on the DNA of the B lymphocytes because of how much more common it is as patients get older. 

Lisa Hatfield:

We know that therapies are evolving faster, hopefully faster than patients are relapsing, which is a good thing. So when they do relapse, chances are there will be a new option for this patient. But a CLL cure still remains elusive.

So, Dr. Jacobs, if you can speak to…we’ll just jump right into some of the newer, the novel therapies and things that are being investigated with CLL treatment. If you can just speak to some of those newer therapies, the novel pathways and targets that are currently under investigation with CLL, we’d appreciate that.

Dr. Ryan Jacobs:

Sure. We’ve come a long way in how we are managing this common cancer that’s benefiting a lot of patients. And as mentioned, with this cancer being one that is more common in the older population, we do know that the population of the United States specifically is getting older, there’s going to be more 70-year-olds. So these breakthroughs are helping a growing number of CLL patients.

Before 2014, really outside of a clinical trial, the only way we could treat CLL Is with combinations of chemotherapy and an immune therapy, like a monoclonal antibody called rituximab (Rituxan), that was kind of our first, what we would call targeted treatment outside of chemotherapy that we had, and it was, like targeted treatments are, well tolerated. It was an antibody that targets B cells specifically.

So we were combining it with chemo, we would call that chemoimmunotherapy, and it helped a lot of CLL patients. But for many, those were poor prognostic markers in particular, and those with relapse disease, chemotherapy was not very helpful, and it was quite toxic in many circumstances.

So we’ve been fortunate that since 2014, we’ve had a lot of new treatment options, and they’re targeted therapies. It’s not like non-specific cytotoxic chemotherapy, these are treatments that have been developed with specific targets in mind that are unique to the B-cell neoplasm, the B-cell cancer, the CLL. And the first of these that really changed everything was a BTK inhibitor called ibrutinib (Imbruvica), that we got in 2014.

Initially, we can only use it in the relapse setting, but eventually, in 2016, we could start treating patients as a first line of therapy with ibrutinib.  And then in 2019, we had a newer version of BTK inhibitor, we call those second-generation BTK inhibitors. That drug was acalabrutinib. And it eventually was shown in a head-to-head study to be just as effective as ibrutinib in a relapsed patient population, but it had less side effects than ibrutinib. So in, specifically, atrial fibrillation, hypertension. Cardiac toxicities overall were one that they really focused on in that study.

So as a whole, when we were choosing BTK inhibitors, we were shifting away from ibrutinib, shifting to acalabrutinib, and then just as…earlier this year, we had a third BTK inhibitor, zanubrutinib (Brukinsa), that was approved. It’s also considered a second generation BTK inhibitor like ibrutinib and acalabrutinib (Calquence). It treats CLL in the same way, in how it inhibits BTK or Bruton’s tyrosine kinase, that’s over expressed in CLL cells.

But it also has a favorable toxicity profile when compared head to head with ibrutinib, and now we have two second-generation options between acalabrutinib and zanubrutinib. And it’s not really easy for us to know between those two, which is “better.” When we decide to treat with a BTK inhibitor, we’re usually choosing between those two at this point, and we’re trying to personalize the decision for the patient, and there are some different factors they can get involved in that complicated decision.

Luckily, we are not limited to BTK as a target. I mentioned earlier, we have monoclonal antibody, rituximab like the one I mentioned, but a newer version of rituximab, a more potent version, obinutuzumab. Is one that we have available along with a Bcl-2 inhibitor, venetoclax (Venclexta). That is now, as of 2018, improved in the frontline CLL setting, also approved in the relapsed setting, of course, since 2016.  And we use venetoclax with a monoclonal antibody like obinutuzumab (Gazyva), and together they are a very potent combination that cause pretty rapid cancer cell death, as opposed to the BTK inhibitors that more put the cancer to sleep and require daily dosing indefinitely for as long as the drugs work.

And remarkably, the data on BTK inhibitors tells us that should work for many, many years. They’ve been following some of the patients that got treatment in the first line setting, and eight years out, there’s still more than 50 percent of the patients are free of progression, so they can’t even quote an average response time yet. With eight years of follow-up on the early ibrutinib patients.  The difference with venetoclax combined with a monoclonal antibody like obinutuzumab, is because it causes a more rapid cell death, you can give it on a time-defined schedule. So we tend to give it for one year in the first-line setting and two years in the relapse setting, and the antibody portion is just given for the first six months. 

The BTK inhibitors and venetoclax are oral treatments, so that’s a big win for patients to avoid the infusion center for those treatments, but the IV antibody treatments will still require some trips to the infusion center if you’re doing that combination with venetoclax. For most patients, those two targets are what we’re choosing between, and we try to personalize the decision to the patient. And again, that’s a very complicated discussion on what is “best.” And we use things like the prognostic work-up, medical problems that the patients already have, medicines that patients are on, to help make the best treatment decision for our CLL patients. But those…for in terms of how well that treats the CLL, both of those are considered equivalent options for the large majority of CLL patients.

We’ve got some things on the horizon, but in general, those are two targets that we have at this point. There is for relapsed patients, PI3 kinase inhibitors that are still FDA-approved at this time, that aren’t quite as effective and more toxic, so we sometimes think about using one of those targeted therapies if a patient has already progressed on a BTK inhibitor in venetoclax class. In the future, we are looking towards combining BTK and Bcl-2 inhibitor. Like, for example, there’s been studies already done that I’ve put many patients on, with ibrutinib-venetoclax, and I believe there’s a question about that later.

There’s also an ongoing study that I have opened at my institution that’s looking at acalabrutinib and venetoclax. So taking these two pills together in a time-defined manner, so you don’t have to take the BTK inhibitor indefinitely. And then there are some therapies that have already been improved in other lymphomas, and we wonder if they’re going to have a role in CLL eventually. So we now have bispecific antibodies, so that’s taking a drug like rituximab or obinutuzumab and adding a T-cell engager to it, so it has two targets or it’s bispecific.

And we have that drug, mosunetuzumab (Lunsumio) available in follicular lymphoma and there’s several others in development, and we’ll see how their role comes into play in CLL as well. As well as CAR T-cell therapy, where we take a patient’s T cells and genetically engineer them to attack the cancer. That’s now an approved therapy for many different kinds of lymphomas and multiple myeloma as well.

So we wonder if that’s going to have a role in CLL. But I think for the foreseeable future, it’s going to be looking first at BTK and then Bcl-2 inhibition, or vice versa. And we don’t really know which is better to go first, we think they’re both…they can both be sequenced one after the other. And then maybe it will have some of these other breakthroughs coming in and helping for after patients need something beyond those therapies.

And there’s probably going to be a lot of patients that never need anything beyond those options, those initial couple of targets, because they do so well. I think in the most immediate future, the approval that is going to give us a new great option is going to be for an alternative site BTK inhibitor, or it’s also called a non-covalent BTK inhibitor.

And there’s this drug called pirtobrutinib (Jaypirca), it has been approved in mantle cell lymphoma and likely will get approved in CLL this year. And that drug specifically is a BTK inhibitor that still works even in patients that have, say, progressed on ibrutinib or acalabrutinib or zanubrutinib. That will be a new target available for CLL patients and probably pretty quickly become one of the go-to drugs that we use for relapsed CLL patients that have already been treated with a BTK…with a traditional BTK inhibitor. So growing number of options and it’s really great for our CLL patients. 


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CLL Patient Expert Q&A: Start Here

CLL Patient Expert Q&A: Start Here from Patient Empowerment Network on Vimeo.

The START HERE program bridges the CLL expert and patient voice, whether you are newly diagnosed, in active treatment or in watch and wait. In this webinar, Empowerment lead Lisa Hatfield and expert Dr. Ryan Jacobs  provide an overview of the latest in CLL, managing CLL side effects and options for CLL progression.

Dr. Ryan Jacobs is a hematologist/oncologist specializing in Chronic Lymphocytic Leukemia from Levine Cancer Institute. Learn more about Dr. Jacobs.

Download Resource Guide   |  Descargar Guía en Español

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Emerging CLL Research: Understanding the CAPTIVATE and MAJIC Studies

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Can CLL Treatment Cause Gastrointestinal Side Effects?


Transcript:

Lisa Hatfield:  

Hello and welcome. My name is Lisa Hatfield, your host for this Patient Empowerment Network program. In this important dialogue, we bridge the expert and patient voice 

to enable you and me to feel comfortable asking questions of our healthcare teams with more precision. The world is complicated, as is a cancer diagnosis, but understanding your CLL doesn’t have to be. The goal is to create actionable pathways for getting the most out of CLL treatment and survivorship. Joining me today is Dr. Ryan Jacobs, a CLL expert from Levine Cancer Institute. Thank you very much for joining us today, Dr. Jacobs, we really appreciate you being here and your time and expertise.

Dr. Ryan Jacobs:

Thanks for having me, Lisa.

Lisa Hatifield:

Before we get started, please remember to download the program resource guide via the QR code. There is great information there that will be useful during this program and after. Okay, let’s get started. So, Dr. Jacobs, I’d like to talk about what’s on the chronic lymphocytic leukemia radar, and rather than saying that entire phrase each time, I’m going to refer to it as CLL, because I’m pretty sure I’ll fumble that up. There’s a lot going on in terms of novel therapies and new options, but before we jump into all of that, the tool box that’s expanding, can you introduce CLL and provide an explanation of what it is and what that means for a newly diagnosed patient?

Dr. Ryan Jacobs: 

So chronic lymphocytic leukemia, or CLL, is the most common chronic lymphoma/leukemia. It is really both most of the time. It presents with what we call lymphocytosis, meaning the white blood cell count, and specifically the lymphocyte count is high or elevated. To call it CLL, to make that formal cancer diagnosis, we can generally take a patient’s blood sample and put it through a fancy machine that we call a flow cytometer, that looks for characteristic markers on the outside of the cells, and if there’s a bunch of those cells, we call that a monomorphic population.

So a bunch of those cells that look the same, and they’re B cells, that’s the type of lymphocyte count they are, and they’re over this threshold of 5,000. Then that is the diagnosis right there, we don’t need an invasive procedure. You generally do not need a bone marrow biopsy or a lymph node biopsy. There is in about 15 percent of cases, the disease presents with just in large nymph nodes and the white count is normal. We call that small lymphocytic lymphoma. It’s considered an overlap with CLL, and I’ve had many patients that have started off with SLL and then eventually manifest elevated lymphocyte count later in their disease course. So it is considered an overlap, the treatment is the same for both of those disease entities.So that’s the diagnosis of CLL and how it generally shows up initially. In a nutshell, it’s a cancer of the aging population, average age is 70. I have a lot of patients that ask me, “Why did I get CLL?” And the answer is, we don’t know. It’s that way with most cancers, unfortunately, we don’t know why one person gets a cancer and the other person doesn’t. But it obviously has something to do with the aging effect on the DNA of the B lymphocytes because of how much more common it is as patients get older.

Lisa Hatifield:

Thank you for that overview, Dr. Jacobs. We do have CLL patients who are watching this who are newly diagnosed, they may be in active treatment, they may be in remission, they may be managing their CLL just fine right now in their lives. So we’re along the whole spectrum of CLL, so thank you for that overview. We know that therapies are evolving faster, hopefully faster than patients are relapsing, which is a good thing. So when they do relapse, chances are there will be a new option for this patient. But a CLL cure still remains elusive. So, Dr. Jacobs, if you can speak to…we’ll just jump right into some of the newer, the novel therapies and things that are being investigated with CLL treatment. If you can just speak to some of those newer therapies, the novel pathways and targets that are currently under investigation with CLL, we’d appreciate that.

Dr. Ryan Jacobs:

Sure. We’ve come a long way in how we are managing this common cancer that’s benefiting a lot of patients. And as mentioned, with this cancer being one that is more common in the older population, we do know that the population of the United States specifically is getting older, there’s going to be more 70-year-olds. So these breakthroughs are helping a growing number of CLL patients.

Before 2014, really outside of a clinical trial, the only way we could treat CLL Is with combinations of chemotherapy and an immune therapy, like a monoclonal antibody called Rituximab, that was kind of our first, what we would call targeted treatment outside of chemotherapy that we had, and it was, like targeted treatments are, well tolerated.  It was an antibody that targets B cells specifically. So we were combining it with chemo, we would call that chemoimmunotherapy, and it helped a lot of CLL patients. But for many, those were poor prognostic markers in particular, and those with relapse disease, chemotherapy was not very helpful, and it was quite toxic in many circumstances. So we’ve been fortunate that since 2014, we’ve had a lot of new treatment options, and they’re targeted therapies. It’s not like non-specific cytotoxic chemotherapy, these are treatments that have been developed with specific targets in mind that are unique to the B-cell neoplasm, the B cell cancer, the CLL.

And the first of these that really changed everything was a BTK inhibitor called ibrutinib, that we got in 2014. Initially, we can only use it in the relapse setting, but eventually, in 2016, we could start treating patients as a first line of therapy with ibrutinib (Imbruvica). And then in 2019, we had a newer version of BTK inhibitor, we call those second-generation BTK inhibitors. That drug was acalabrutinib (Calquence). And it eventually was shown in a head-to-head study to be just as effective as ibrutinib in a relapsed patient population, but it had less side effects than ibrutinib. So in specifically, atrial fibrillation, hypertension. Cardiac toxicities overall were one that they really focused on in that study. So as a whole, when we were choosing BTK inhibitors, we were shifting away from ibrutinib, shifting to acalabrutinib, and then just as…earlier this year, we had a third BTK inhibitor, zanubrutinib (Brukinsa), that was approved. It’s also considered a second-generation BTK inhibitor like ibrutinib and acalabrutinib.

It treats CLL in the same way, in how it inhibits BTK or Bruton’s tyrosine kinase, that’s overexpressed in CLL cells. But it also has a favorable toxicity profile when compared head to head with ibrutinib, and now we have two second generation options between a acalabrutinib and zanubrutinib. And it’s not really easy for us to know between those two, which is “better.” When we decide to treat with a BTK inhibitor, we’re usually choosing between those two at this point, and we’re trying to personalize the decision for the patient, and there’s some different factors they can get involved in that complicated decision. Luckily, we are not limited to BTK as a target. I mentioned earlier, we have monoclonal antibody, rituximab (Rituxan) like the one I mentioned, but a newer version of Rituximab, a more potent version, obinutuzumab (Gazyva). Is one that we have available along with a Bcl-2 inhibitor, venetoclax. That is now, as of 2018, improved in the frontline CLL setting, also approved in the relapse setting, of course, since 2016.

And we use venetoclax with a monoclonal antibody like obinutuzumab, and together they are a very potent combination that cause pretty rapid cancer cell death, as opposed to the BTK inhibitors that more put the cancer to sleep and require daily dosing indefinitely for as long as the drugs work. And remarkably, the data on BTK inhibitors tells us that should work for many, many years. They’ve been following some of the patients that got treatment in the first line setting, and eight years out, there’s still more than 50 percent of the patients are free of progression, so they can’t even quote an average response time yet. With eight years of follow-up on the early ibrutinib patients. The difference with venetoclax combined with a monoclonal antibody like obinutuzumab, is because it causes a more rapid cell death, you can give it on a time-defined schedule. So we tend to give it for one year in the first-line setting and two years in the relapse setting, and the antibody portion is just given for the first six months.

The BTK inhibitors and venetoclax are oral treatments, so that’s a big win for patients to avoid the infusion center for those treatments, but the IV antibody treatments will still require some trips to the infusion center if you’re doing that combination with venetoclax. For most patients, those two targets are what we’re choosing between, and we try to personalize the decision to the patient. And again, that’s a very complicated discussion on what is “best”. And we use things like the prognostic work-up, medical problems that the patients already have, medicines that patients are on, to help make the best treatment decision for our CLL patients. But those…for in terms of how well that treats the CLL, both of those are considered equivalent options for the large majority of CLL patients. We’ve got some things on the horizon, but in general, those are two targets that we have at this point. There is for relapsed patients, PI3 kinase inhibitors that are still FDA approved at this time, that aren’t quite as effective and more toxic, so we sometimes think about using one of those targeted therapies if a patient has already progressed on a BTK inhibitor in venetoclax class.

In the future, we are looking towards combining BTK and Bcl-2 inhibitor. Like for example, there’s been studies already done that I’ve put many patients on, with ibrutinib-venetoclax, and I believe there’s a question about that later. There’s also an ongoing study that I have opened at my institution that’s looking at acalabrutinib and venetoclax. So taking these two pills together in a time-defined manner, so you don’t have to take the BTK inhibitor indefinitely. And then there’s some therapies that have already been improved in other lymphomas, and we wonder if they’re going to have a role in CLL eventually. So we now have bispecific antibodies, so that’s taking a drug like Rituximab or obinutuzumab and adding a T-cell engager to it so it has two targets or it’s bispecific. And we have that drug, mosunetuzumab (Lunsumio) available in follicular lymphoma, and there are several others in development, and we’ll see how their role comes into play in CLL as well. As well as CAR T-cell therapy, where we take a patient’s T cells and genetically engineer them to attack the cancer. That’s now an approved therapy for many different kinds of lymphomas and multiple myeloma as well. So we wonder if that’s going to have a role in CLL.

But I think for the foreseeable future, it’s going to be looking first at BTK and then Bcl-2 inhibition, or vice versa. And we don’t really know which is better to go first, we think they’re both…they can both be sequenced one after the other. And then maybe it will have some of these other breakthroughs coming in and helping for after patients need something beyond those therapies. And there’s probably going to be a lot of patients that never need anything beyond those options, those initial couple of targets, because they do so well. I think in the most immediate future, the approval that is going to give us a new great option is going to be for an alternative site BTK inhibitor, or it’s also called a non-covalent BTK inhibitor.

And there’s this drug called pirtobrutinib, it has been approved in mantle cell lymphoma and likely will get approved in CLL this year. And that drug specifically is a BTK inhibitor that still works even in patients that have, say, progressed on ibrutinib or acalabrutinib or zanubrutinib. That will be a new target available for CLL patients and probably pretty quickly become one of the go-to drugs that we use for relapsed CLL patients that have already been treated with a BTK…with a traditional BTK inhibitor. So growing number of options and it’s really great for our CLL patients.

Lisa Hatfield:

Thank you for that overview again, Dr. Jacobs. It does sound like there are a lot of new therapies coming out, especially for relapsed patients, super exciting for them. And this is actually a great time to jump right into questions. We have many questions from patients that different patients have submitted. But first, I want to remind everybody that this program is not a substitute for medical care. Please consult with your medical team for advice on your own condition or disease. And, Dr. Jacob, I was taking notes as you were talking, because you had spoken a little bit about a combination of the BTK inhibitor and Bcl-2 inhibitor with venetoclax. And I did a little research last night before I talked with you, and it sounds like that is something that the CAPTIVATE trial is investigating. 

So that’s exciting, and a patient asked about that, what that trial is. And it’s music to my ears as a cancer patient to hear something like “fixed duration,” it’s also investigating a fixed duration so patients and have maybe a bit of a medication vacation. So can you speak to that trial a little bit and explain what it is a little bit on how that might benefit patients with CLL?

Dr. Ryan Jacobs:

Yeah. So one of the best elements of treating with venetoclax is that it produces a deep level of remission in many patients. In fact, when given with the monoclonal antibody obinutuzumab, to CLL patients receiving that treatment as a first line of therapy for their CLL, about three-quarters of CLL patients will get to so deep of a remission that we call them minimal residual disease-negative. And that’s a blood test or a bone marrow test, but more easily done as a blood test, where we can look to a sensitivity of one in 10,000 white cells and determine if there’s any CLL in those 10,000 cells. We can actually go deeper than that, but we say, we call patients negative if they’re less than one in 10,000. And so 75 percent of patients will get to that depth of remission just with obinutuzumab for six months along with venetoclax for a year. So when researchers saw that, they recognized that we could probably stop treatment in those patients getting venetoclax because venetoclax yields these deep responses. And then the next kind of thought was, well, could we give a BTK inhibitor with venetoclax, but also over a defined treatment timeline and maybe get some of the remarkable benefits of treating with a BTK inhibitor but not get stuck being on therapy for years and years.

So the CAPTIVATE study was the first really to, in a large Phase II manner, look at that combination in a younger patient population, it was for patients 70 and younger. And it wasn’t in a high risk or anything, it was all comers. But they did have to be 70 and younger and getting treatment as a first-line therapy. So the combination was very effective. As of the last American Society of Hematology meeting in December, four years of data was reported and a large percentage of patients were still free of progression, over 80 percent still free of progression. And that’s three years off therapy at that point.

It was well-tolerated, not many patients had to come off due to toxicity. It was, in fact, less than 10 percent had really significant toxicities requiring discontinuation. So it was a well-tolerated effective treatment.

I do have one of those studies to open at my institution, the acalabrutinib-venetoclax combination, it’s called the MAJIC trial, and it is a large Phase III study that if it’s successful, I think would lead to the approval of giving those two drugs together. But then the extra credit question is, who should get the combination and who should get the drugs separately? And we don’t have an answer for that right now, and that’s a long topic of debate among CLL specialists.

Lisa Hatfield:

Great. Well, thank you. So for that trial you spoke of that you’re conducting right now, is that…is it only relapsed patients who are eligible for that? Or is that for front-line therapy?

Dr. Ryan Jacobs:

No, this is a first-line therapy that the MAJIC study is.

Lisa Hatifield:

Oh good. That’s promising for patients too.

Dr. Ryan Jacobs:

And it has a really good comparator arm, so that won’t be a problem that the standard arm on that study is venetoclax plus obinutuzumab, so it’s comparing against one of our best treatments, and so we really will get the answer of does it look better to use the BTK with the Bcl-2? Or is it not really that much better than just giving an venetoclax with obinutuzumab? And then the one obvious element that I didn’t mention that would be nice for most patients in addition to being efficacious and well-tolerated is if you could get an all-oral combination. Of course, venetoclax with obinutuzumab, you’re still getting quite a few infusions with the obinutuzumab over the first six months. So that’s a lot of time in the infusion center that you could avoid with just the combination of two oral targeted agents. So that would be a breakthrough for patients too, I think.

Lisa Hatfield:

Well, you commented also on something that’s really important for patients to know, and that is that if you go into a clinical trial, you won’t be given nothing for cancer clinical trials, you’re going to be given the standard of care or whatever it’s being compared to. So for patients who are considering that.

Dr. Ryan Jacobs:

That’s a Phase III. Yeah, for Phase III. If you go on an earlier phase trial, you know exactly what you’re getting. There’s usually not any randomization for earlier phase studies, you just get the intended treatment.

Lisa Hatfield:

Okay, great. Well, thank you so much for explaining that. So we have some pretty specific questions, and we have a patient who wrote in and asked, “What is the difference between IGHV-mutated and IGHV-unmutated CLL? And can you talk about treatment considerations for those?”

Dr. Ryan Jacobs:

Yeah. So that’s part of a bigger discussion around the prognostic work-up of CLL and not all CLL is the same, and we’ve done a really good job of figuring out tests to separate out the CLL patients that tend to behave more aggressively and respond to certain kind of therapies, versus those that are more of what we call indolent or slow growing and respond to other kinds of therapies. I do want to say, I haven’t mentioned it yet, we still don’t treat CLL if it’s not causing any problems. And about half of patients get diagnosed as sort of an accident, and they get a blood test for something else, and their white count is elevated, and that leads to a diagnosis, but they feel fine. We still leave those patients alone. Even with these good treatment options we have, we recognize that there are a select percentage of CLL patients that don’t ever need treatment, and so we don’t just want to start treatment in everybody.

But I do still like to check this prognostic work-up, even if I’m not going to start treatment, but I make sure and ask the patient if that’s what…iIn line with what they want. But certainly, if you’re going to start treatment, you’re required by guidelines to check a prognostic work-up, and I would really encourage the CLL patients tuning in to ask their oncologist, “What is my prognostic work-up?” if they’re going to start treatment.  Because of the oncologists, unfortunately, that have to deal with lots of other cancers, maybe don’t always know the right test to send. I’m very spoiled in that I get to just treat lymphoma and specifically focus a lot of my research in CLL and get to stay up with all this. I don’t know how a general oncologist keeps up with everything, honestly.

But the big three tests are going to be the FISH analysis, fluorescence in situ hybridization. And then IGHV mutational analysis, and then also a TP53 mutation analysis. And I don’t really have time to go through all of those, but IGHV is the question I get a lot. “What is that?” It’s one of these rare findings where it’s actually normal to have a mutation at the IGHV. IGHV stands for immune globulin heavy chain variable region, and it is usually mutated in B lymphocytes because it’s part of the process of a mature lymphocyte that is able to make a lot of different kinds of antibodies. And it undergoes somatic hypermutation, is what it’s called, as the B cell matures. Generally in oncology, the more mature a cancer is, the less aggressive it behaves and usually the easier it is to manage, and that is the case with CLL. So think of an unmutated IGHV CLL cancer as a more primitive or a more immature cancer clone, and as such, it is harder to treat.

In about half of patients will be found to be unmuted at the IGHV and historically, all we had was chemo and we knew these patients weren’t going to respond for near as long as the IGHV-mutated patients were to chemo. What’s nice is, with our targeted treatments, particularly the long-term data with the BTK inhibitors, it doesn’t look like it matters whether you’re mutated or you’re unmutated. So that’s one of the really great things with our new treatments for CLL, is it has, the people that have benefited the most are the ones that were doing the worst, so that’s great. It’s not just the patients that were already doing well, that are doing even better.

Lisa Hatfield:

So I just want to take a step back and kind of looking at this through the lens of a newly diagnosed CLL patient. You’d mention that sometimes you don’t treat every CLL patient. So is there something, if you find a patient who does not need treatment, is there something you tell the patients as far as regular monitoring? Will you monitor them to see if it progresses to the point where it requires treatment?

Dr. Ryan Jacobs:

Yeah. And we’re fortunate that this is a blood cancer that most of the time we can follow with a simple blood count and follow the white count, follow how the…follow the health of the bone marrow by looking at things like anemia, low red cell count, or a low platelet count that we call thrombocytopenia. So that’s the easiest thing to follow, but I’m also talking with my patients and examining my patients. I want to know if their length nodes are causing them a lot of pain, because we should treat that, there’s no reason they should live in pain.I want to know if they’re waking up drenched in sweat all the time, if their quality of life has been really affected by that. Or are a dramatic amount of fatigue that we can’t explain by some other cause. And I also, of course, examine the nodes myself and make sure that there’s no alarming findings there. So that’s really what’s involved with checking on a CLL patient that’s on active surveillance, that’s what we call it. And there’s a list of criteria that the oncologist should know in terms of deeming who needs treatment and who doesn’t. And so we’re kind of following the same rules, so to speak, in terms of who gets treated for CLL.

Lisa Hatfield:

Okay, thank you. So we have a patient who asked a series of questions here, and I think you already…you spoke pretty well to the role of the BTK inhibitors in treating CLL. I’m going to kind of clump these together.  So I guess three questions. What treatments do you think are the most beneficial for patients whose CLL has relapsed? What are the poor prognostic indicators for CLL? And along the same lines, what are the high-risk genetic markers for CLL?

Dr. Ryan Jacobs:

It’s a little more complicated discussion in the first line setting because both are options. At this point in time, we haven’t been…at least those that are, I would say, staying up to date on the CLL data, we have not been using chemotherapy for a long time. So most of the relapsed patients will have seen either one of the BTK inhibitors or venetoclax. And so what we do in the second-line setting is just use the other option that they haven’t seen. The data tells us, when you look at what treatments are being prescribed, most patients are going on BTK inhibitors, and they have been around longer than venetoclax in general. So for a lot of patients, that relapsed treatment is going to be venetoclax. Because that has the best data in terms of treating patients that have progressed on a BTK inhibitor like ibrutinib or acalabrutinib or zanubrutinib.

In the near future, we’ll have pirtobrutinib (Jaypirca) and so maybe, maybe some will get that drug before venetoclax, and that’s probably okay. And so we’ll have that additional option. The complicated patients, and I’ve alluded to this, or what do we do after BTK and Bcl-2? What are we left with? I mentioned PI3 kinase, that’s not a great option. There’s still stem cell transplant out there for young patients that are running out of options. Clinical trial is really what I would like to emphasize there.  If you’re a patient that can get to a high volume referral cancer center with a CLL specialist, I would do that. If you have seen BTK inhibitor and venetoclax and are looking for other options.

Lisa Hatfield:  

Great, thank you. So the next question is actually a really good question, I think we can broaden it a little bit. But the question is, “How can I ask my doctor to make sure I am being tested for serum markers?” And more broadly, I think a lot of patients are a little bit nervous about asking questions of their doctor, because they don’t want to feel like they’re questioning their expertise or doubting them. So how in general can we ask our doctor questions if we hear something? Or how we approach our doctor with those types of questions?

Dr. Ryan Jacobs:

So I mentioned asking your doctor, “What’s my prognostic markers?” I think this is probably the easiest way to get that information. And your doctor should be checking those. The question comes up like, what are the “high-risk” markers? We talked about mutated versus unmutated. Thankfully, our novel treatments that doesn’t seem to matter. Same goes with…there’s on FISH there used to be, if you found three copies of chromosome 12, that’s called trisomy 12, that doesn’t seem to matter With our newer treatments. A deletion at chromosome 11, again, used to not do as well with chemo. Novel therapies…doesn’t seem to matter. The one that is still potentially affecting outcomes, even with our novel treatments, are chromosome 17 aberrations, which stately are rare in the initial diagnostic setting. That or a TP53. A deletion at 17p or TP53 mutation probably is only going to be around 10 percent of patients or so. And in the relapse setting though, that number goes up because of the more aggressive cancers emerge, we call that clonal evolution. So maybe in the 20-ish percent range. These patients, we tend to prioritize indefinite therapies first, because it seems like these patients do better if you keep treatment going, as opposed to interrupted therapies like venetoclax. And so we tend to treat those patients with a drug like acalabrutinib or zanubrutinib first and then think about the venetoclax later for those patients.

Lisa Hatfield:

Okay. Okay. And just to clarify, for patients too, I know that a lot of cancers, there are discussions about the 17 deletion, 17p, and then also the TP53 gene. So if I understand correctly, the TP53 gene is housed on chromosome number 17. So if that is missing, then that patient may be missing that gene, that is considered a tumor suppressor gene, which we want. Is that correct?

Dr. Ryan Jacobs:

Right. So it’s either missing, which is what we see on FISH with a deletion, or it can be mutated and that’s the next gen sequencing, and often it will be both in those patients.

We think with indefinite, there’s some really good data that was just released with zanubrutinib. When they looked at 17p-deleted patients, there’s some long-term follow-up with ibrutinib-treated 17p-deleted patients. With chemo these patients would only get about a year or so, but we’re getting maybe even close to normal outcomes with long-term BTK. But we do know if you just give them a year of venetoclax and obinutuzumab for six months and then stop, they do relapse quicker than the other patients. So they relapse after about four years. As opposed to with five years of follow-up with that first line venetoclax approach, there are 62 percent of patients are still free of progression.

Lisa Hatfield:

Oh wow, okay. Thanks for explaining that too. I know that that chromosome 17 and the TP53 gene, that’s talked about in a lot of different cancers and it often come up, “How are those connected?” So thanks for just describing that a bit. So this patient is asking, “For patients who may be eligible for BTK inhibitors, are there specific comorbidities that might contribute to adverse side effects?”

Dr. Ryan Jacobs:

Yeah, so we screen…all BTK inhibitors have some cardiac toxicity. They have been shown with the second-generation BTK inhibitors to have less cardiac toxicity than ibrutinib, specifically atrial fibrillation. So if you have atrial fibrillation, maybe that’s a reason why you might go on venetoclax first as opposed to a BTK inhibitor. But it’s not a contraindication to getting a BTK inhibitor if the atrial fibrillation is under good control.  Other cardiac risk factors would include difficult to control hypertension at baseline, or heart failure. These are all things that might make us think twice about using a BTK inhibitor as our first therapy, because venetoclax has no cardiac toxicities. The other thing to consider is BTK inhibitors all to a degree have, and I describe it to patients, like an aspirin-like effect on the platelets. They do interfere with the platelet binding, which so universally, patients will know to varying levels some easier bruising.

And if patients are on, because of say, they’ve had a heart attack in the past and they’re on aspirin at baseline, or what would even be more concerning if they were on a drug like Plavix because they’ve had a stent placed, that would be something that would really concern me and would definitely push me more towards venetoclax, that again, doesn’t have those anti-platelet interactions. Also, patients who are on blood thinners because of a history of blood clot or atrial fibrillation, there is the potential increased risk for bleeding and bruising there as well. None of these are absolute contraindications, they’re just all what goes into the blender, if you will, of putting lots of information in and coming up with the best treatment decision as personalized for the CLL patient. We’re blessed to have multiple options, but it does make it more of a challenge to find the “best” option.

Lisa Hatfield:

Yeah. Thank you for that. We have several questions from a couple of patients regarding side effects. So the question, “How long will my side effects of my CLL treatment last? And what can be done to reduce those?” And specifically, a patient is asking if there’s a connection with CLL and gastrointestinal issues?

Dr. Ryan Jacobs:

So all of the treatments, including venetoclax, the BTK inhibitors, will have diarrhea listed as a possible side effect. It’s usually low grade. But generally, I have found the gastrointestinal toxicities abate some over time. So if they are present earlier, if you’re able to stick with therapy, they do tend to get better. For the once daily meds, I encourage those patients to try to take the drug in the evening. The GI tract tends to be less active later in the day, and you can sleep off some of the potential gastrointestinal issues. So I’ve had success there. Sometimes we have to lower the dose to just find the best dose to help mitigate some of these. There’s the antidiarrheals that can help if you need them. Imodium. I had a patient I saw earlier this week that Imodium didn’t really work, but good old Pepto Bismol did the trick from time to time. So certainly though, if the gastrointestinal issues are significantly affecting quality of life, we need to come up with a new plan, whether that’s reducing the dose or changing to a different option. Specifically, what’s nice about the BTK inhibitors is they all have data that show if you’re having problems with one, you can switch to the other and likely not have the same problem occur. So that’s nice.

Lisa Hatfield:

Have you ever seen any uncharacteristic side effects several times in your practice? Anything really unique? I’m just curious about that.

Dr. Ryan Jacobs:

Yeah. There’s always the patients, they can have a more severe form of maybe, of a more common side effect, like the…we were talking about diarrhea, I’ve had a patient that actually had a difficult, with venetoclax, had difficulties with the stool incontinence. So that was kind of a severe form of that. It wasn’t so much diarrhea that was the problem. But we were able to ultimately mitigate that with a dose reduction. I would say the way, particularly if it’s an unusual side effect, the best thing to do is to take a break. If it’s a serious side effect that needs to be addressed and it’s affecting quality of life or causing problems, take a break from the treatment. If you take a week off these treatments, particularly venetoclax, taking breaks doesn’t matter. We like not to take long breaks with the BTK inhibitors. But if you take a week off, these drugs don’t have very long half-lives. So if the issue is not getting any better and you’ve been off of treatment for a week, it’s unlikely that that issue is coming from the treatment. So that’s a way I try to sort through some…particularly if they’re unusual side effects sometimes. And certainly, if we deem that the issue is connected to the treatment, I’ll usually try lowering the dose before just giving up.

Lisa Hatfield:

Okay. Thank you. A patient had asked, and I love this question because I often wonder myself when I get up in the morning, my bones are creaking and popping, “How do you know the difference between,” this patient’s talking about fatigue. How does a patient discern, “Well, this is fatigue from my cancer or my treatment,” versus just normal aging? Whether it’s fatigue or bruising or any side effect.

Dr. Ryan Jacobs:  

Yeah. Fatigue is a really…I had an attending physician when I was in my training that said, “Treating fatigue makes me fatigued.” But it’s hard. If it’s really the only problem the CLL patient is having, it can be. All those other problems I had mentioned earlier, the low red cells, the low platelets, the painful nodes, the night sweats, I with close to 100 percent certainty know I can fix those with treatment.Fatigue, I’m not as confident when that’s the only issue that a patient’s having. I try to differentiate between fatigue from other causes and old age, and specifically to CLL. 

They try to put it as a metric and say, if you’re having to spend half the day or more just lying around and you’re not able to do your normal activities of daily living, like that’s a severe level of fatigue and treatment should be considered.I’m looking for somewhat of a precipitous decline, not necessarily just kind of the gradual fatigue that you might more relate to aging. The problem with treating fatigue is you’ll look, if you look at the possible side effects of all of these medicines I talked about, fatigue will be a potential side effect.So you’re sometimes trading one problem and getting another, or maybe the fatigue does get better, but then the patient has some different side effect that’s even worse than the fatigue. So it’s hard to really help when fatigue’s the only issue. But certainly, I have helped some patients with fatigue. We don’t have a test that we can do to know for sure is the fatigue coming from the cancer, or is it coming from something else. 

Lisa Hatfield:

Great. Well, that wraps up our program for today. Thank you so much for joining us, Dr. Jacobs.  I am Lisa Hatfield from Patient Empowerment Network.


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Three Tests You Should Have Before Seeing a CLL Specialist

What are three tests patients should have before seeing a CLL specialist? In the “What Tests Should I See Before Seeing a CLL Specialist?” program, expert Dr. Nadia Kahn from Fox Chase Cancer Center shares three tests that chronic lymphocytic leukemia (CLL) patients should get to assist with predicting each patient’s CLL progression, treatment response, and waiting period before starting treatment.

1. Fluorescence in Situ Hybridization (FISH) Test

In a fluorescence in situ hybridization (FISH) test, the function of fluorescence is used to identify genetic mutations from CLL and where the mutations have been relocated to. The information gathered from FISH testing helps your doctor determine your CLL prognosis and optimal treatment options for your specific CLL.  

2. Immunoglobulin Heavy-Chain Variable Region (IgVH) Mutational Test

In IgVH testing, immunoglobulin gene mutation status is checked for the expression in CLL cells. The IgVH mutational status then helps the CLL specialist determine which CLL subset the patient’s disease falls under – which helps in determining the disease progression that is likely to occur in that patient.  

3. TP53 Sequencing Test

In a TP53 sequencing test, a mutation in the TP53 gene – translated as tumor protein 53 – is searched for. Normal function of the TP53 gene helps prevent the growth of tumors. But when TP53 is mutated, it may lead to uncontrolled cell growth and then cancer growth. TP53 mutation can either be passed down from your parents or can result from environmental factors that cause a mistake during the cell division process. The result of the TP53 sequencing test will help determine CLL prognosis and treatment options.

By getting the three vital CLL tests of FISH, IgVH mutational, and TP53 sequencing tests, they can help in determining a CLL patient’s prognosis and best treatment options. If you’d like to learn more about CLL, check out our CLL information.

What Tests Should I Get Before Seeing a CLL Specialist?

What Tests Should I Get Before Seeing a CLL Specialist? from Patient Empowerment Network on Vimeo.

Chronic lymphocytic leukemia (CLL) patients are advised to have some testing before seeing a CLL specialist. Watch as Dr. Nadia Khan from Fox Chase Cancer Center explains tests that help predict CLL progression, treatment response, and time to treatment.

See More from START HERE CLL

Related Programs:

Can Supplements Be Taken During CLL Treatment?

Can Supplements Be Taken During CLL Treatment?

How is Flow Cytometry Used in CLL?

Will CLL Watch and Wait Be Redefined for Patients?

Will CLL Watch and Wait Be Redefined for Patients?


Transcript:

Mary Leer: 

Here’s a question from Richard: I am a CLL patient currently on “watch and wait.”  When is the right time and what tests should have been performed before seeing a CLL specialist? 

Dr. Nadia Khan: 

Richard, thank you for your excellent question. There are a number of tests with respect to CLL that help us to prognosticate more accurately, and those would include either a FISH panel, fluorescence in situ hybridization for CLL which identifies this common amplification and deletions that have been described in CLL. Additionally, an IgVH mutational test and a TP53 sequencing test would be the three basic prognostic tests used to identify what kind of CLL a patient has. 

This testing should be repeated at any point wherein a patient is changing therapy or at any point where there’s a change in the clinical status of the patient. Outside of these standard tests, there are other molecular tests that can be ordered and are commercially available for use…for use by clinicians. These molecular tests can also identify changes within the CLL that can help to prognosticate at this time, outside of the standard tests that I mentioned to you, there are no proven benefits to other testing, but the results of additional testing can just really help inform your clinician about the likelihood of you needing treatment in the near future and the likelihood of response to therapy.

What Tests Reveal If CLL Treatment Is Working?

What Tests Reveal If CLL Treatment Is Working? from Patient Empowerment Network on Vimeo.

Some chronic lymphocytic leukemia (CLL) patients may wonder how they can check to see if treatment is working. Watch as Dr. Nadia Khan from Fox Chase Cancer Center answers a viewer’s question and provides insights on what tests are used in assessing response to CLL treatment.

See More from START HERE CLL

Related Programs:

Can Supplements Be Taken During CLL Treatment?

Can Supplements Be Taken During CLL Treatment?

How is Flow Cytometry Used in CLL?

Will CLL Watch and Wait Be Redefined for Patients?

Will CLL Watch and Wait Be Redefined for Patients?


Transcript:

Mary Leer: 

Dr. Khan, here’s a question that I think many are probably thinking of right now, what tests do you give patients to see if CLL treatment is working?

Dr. Nadia Khan: 

Thank you, Jessica. During the course of CLL treatment and at the end of a time-limited treatment course, we’re assessing for responses, so as a patient is going through their treatment, we may decide to re-image to determine if there has been debulking of lymph nodes. And depending on the treatment that we’re administering and where the lymph nodes are located, we may decide to do imaging sooner or later, so for example, if there are palpable lymph nodes while a patient is on therapy, and we can measure these readily by physical exam in the clinic, we may not feel as compelled to re-image at an early time point, if there is valiantly or in large seen that is hard to palpate. And we want to understand if treatment is working after approximately three to four cycles of therapy, we would assess for a good response to treatment if clinically, it also does appear that patients are responding, and if there was any question as to respond, we would image at an earlier time point when patients are being treated with a venetoclax-based (Venclexta) regimen and there is significant adenopathy or an enlarged spleen, we may reassess the size of lymph nodes and spleen during the course of venetoclax ramp-up to determine if patients can be transitioned from inpatient to outpatient ramp-up. 

How Often Do CLL Patients Develop a Second Gene Mutation?

How Often Do CLL Patients Develop a Second Gene Mutation? from Patient Empowerment Network on Vimeo.

Chronic lymphocytic leukemia (CLL) patients can sometimes develop a second gene mutation. Watch as Dr. Nadia Khan from Fox Chase Cancer Center shares how common it is to develop a second mutation and when it’s important to retest for genetic changes.

See More from START HERE CLL

Related Programs:

Are There Any Long-Term Side Effect Risks for CLL Patients?

What Tests Should I Get Before Seeing a CLL Specialist?

 
How to Approach Side Effects With CLL Medications

How to Approach Side Effects with CLL Medications


Transcript:

Mary Leer: 

This question comes from Laurie. How common is it for CLL patients to develop a second gene mutation? 

Dr. Nadia Khan: 

Laurie, Thanks for that question. It is not common for most call patients to have significant alterations in the genetic landscape of the CLL. With that being said, there are a few notable exceptions for CLL with TP53 dysfunction or complex cytogenetics, there is a higher likelihood that there will be genetic instability in those CLL clones. Therefore, it’s important to retest for changes if there is a change in the biology of the CLL, if there is a progression on therapy, for example, or at the time when a new therapy is planned. 

CLL Patient-Expert Q&A

Dr. Nadia Khan | CLL Patient-Expert Q&A from Patient Empowerment Network on Vimeo.

Is CAR T-cell therapy a cure for chronic lymphocytic leukemia (CLL)? What specific lab tests will I need to get a second opinion? CLL expert Dr. Nadia Khan answers questions from CLL patients and families. 

Have a question for a future Patient-Expert Q&A Email us: question@powerfulpatients.org with subject line: CLL Patient-Expert Q&A 

See More from START HERE CLL

Related Programs:

What is the Prognosis of CLL?

What is Watch and Wait in CLL?

What is Watch and Wait in CLL?

How to Approach Side Effects With CLL Medications

How to Approach Side Effects with CLL Medications


Transcript:

Mary Leer:

Dr. Khan, first of all, thank you for being part of this program. 

Dr. Nadia Khan:

Thank you so much for inviting me to participate.

Mary Leer:

We have a question from Larry about side effects. Larry says: I’ve been fighting side effects with each medicine. Will the correct answer for side effects in CLL always be to stop the medicine? 

Dr. Nadia Khan:

Larry, thank you for your question. It is an excellent one, and this is something that we encounter on a very regular basis in CLL patients who are on targeted therapies. The side effects occur frequently in patients taking BTK inhibitors, in patients taking PIK inhibitors, and we have some side effects reported on BCLT inhibitors as well, typically side effects on all of these targeted therapies can be managed with either dose reduction or supportive therapies, and we don’t necessarily have to stop a medication due to a side effect that is encountered, and of course, it would depend on the type of side effect and the severity of the side effect before deciding to pause therapy for a time or to dose reduce or add other medications to help.

Mary Leer:

Sarah has a question about side effects. How can I tell if side effects are from CLL, my medicine, or just a part of aging? 

Dr. Nadia Khan:

Thanks for that question, Sarah. It can be a challenge to tease out the cause of any given complaint, whether the symptom is due to underlying other medical conditions, the medications a patient is on, their CLL therapy, their CLLl itself is something that we find to be challenging, and it can often be a process of elimination and understanding when side effects started and how they are related to the known side effect profile of a therapy is often a starting point. Depending on the side effect, we may decide to institute a treatment holiday, and if the side effect improves or resolves during the treatment holiday, it’s more clear that the side effect is due to the medication in question. If the side effect persists during that period of time, then it’s more likely to be due to something else.

Mary Leer:

George asks, are there any long-term side effect risks for CLL patients? 

Dr. Nadia Khan:

That’s a great question, George. It really would depend on the therapy being instituted and when in the chemoimmunotherapy era for CLL patients, we have a very different perspective of what short-term and long-term side effects were and are for those patients who have been treated with chemoimmunotherapy. For patients treated with targeted therapies and immunotherapy combinations today, there tends to be fewer serious long-term side effects when looking at the various drug classes. For example, BTK inhibitors, there is a risk of atrial fibrillation that remains constant throughout the course of therapy, and if a patient is on therapy for one year or 10 years, they can develop that particular side effect. High blood pressure can be significant with BTK inhibitors as well, and that risk also tends to be stable. In terms of infection risk, there is relative immunosuppression with all CLL therapeutics, and so our concern, more recently has been focused on COVID infection, serious bacterial and viral infections tend to be less frequent, we don’t institute prophylaxis for those infections because they tend to be so few and far between in the patients that we’ve treated. 

Mary Leer:

Thank you, Dr. Khan. Here’s a question from Richard:  I am a CLL patient currently on “watch and wait.”  When is the right time and what tests should have been performed before seeing a CLL specialist? 

Dr. Nadia Khan:

Richard, thank you for your excellent question. There are a number of tests with respect to CLL that help us to prognosticate more accurately, and those would include either a FISH panel, fluorescence in situ hybridization for CLL which identifies this common amplification and deletions that have been described in CLL. Additionally, an IgVH mutational test and a TP53 sequencing test would be the three basic prognostic tests used to identify what kind of CLL a patient has. This testing should be repeated at any point wherein a patient is changing therapy or at any point where there’s a change in the clinical status of the patient. Outside of these standard tests, there are other molecular tests that can be ordered and are commercially available for use… For use by clinicians. These molecular tests can also identify changes within the CLL that can help to prognosticate at this time, outside of the standard tests that I mentioned to you, there are no proven benefits to other testing, but the results of additional testing can just really help inform your clinician about the likelihood of you needing treatment in the near future and the likelihood of response to therapy. 

Mary Leer:

This question comes from Laurie. How common is it for CLL patients to develop a second gene mutation? 

Dr. Nadia Khan:

Laurie, Thanks for that question. It is not common for most call patients to have significant alterations in the genetic landscape of the CLL. With that being said, there are a few notable exceptions for CLL with TP53 dysfunction or complex cytogenetics, there is a higher likelihood that there will be genetic instability in those CLL clones. Therefore, it’s important to retest for changes if there is a change in the biology of the CLL, if there is a progression on therapy, for example, or at the time when a new therapy is planned.

Mary Leer:

Yolanda’s question is, what is CAR T therapy and who is eligible? 

Dr. Nadia Khan:

Thank you, Yolanda. This is a question that I get asked very frequently. CAR-T therapy is an exciting cellular therapy that has been FDA-approved in a number of lymphomas, and it is currently not FDA-approved for patients with CLL. So at this time, CLL patients can receive CAR-T therapy in the setting of a clinical trial only, and it is typically reserved for those patients who have progressed or relapsed after multiple lines of therapy and for whom there is no alternative therapy for consideration. Often, it is considered in the context of the clinical trial prior to the use of allogeneic stem cell transplant, because the results of allo transplant and CAR-T seemed to be fairly comparable. CAR T therapy, however is much better tolerated than allo transplant, both of these modalities are very rarely employed for our CLL patient today because of the very effective targeted therapies and immunotherapies that we have to use. 

Mary Leer: 

Dr. Khan, Chuck’s question is, what are the side effects of CAR-T cell therapy? 

Dr. Nadia Khan: 

Thank you, Chuck. For your excellent question, CAR-T-therapy is associated with two main types of side effects, one is Cytokine Release syndrome or CRS, which happens within the first two weeks of receiving CAR cells, and that can manifest as fevers, chills, a drop in blood pressure, shortness of breath, and the requirement of oxygen. When that happens to patients, there are medications that are given to help improve those cytokine-mediated events. Another major side effect with CAR-T therapy is neurotoxicity, which also happens within the first 14 days in some patients who receive CAR therapy, and that can manifest as anything from a headache to more concerning confusion, seizures and coma. CRS happens commonly in patients who receive party therapy and is usually managed very successfully with anti-inflammatory therapies given intravenously in the hospital and can be used for patients even who get outpatient CAR-T therapy.

Dr. Nadia Khan: 

When patients do suffer with neuro toxicities, intravenous therapies are also employed to combat that, and when necessary, patients might require escalation to an intensive care setting when these toxicities are very severe.

Mary Leer: 

Dr. Khan, is CAR T therapy a cure for CLL? 

Dr. Nadia Khan: 

Thank you for your question, Bernard. CAR-T therapy has been curative for a minority of patients who have been treated with CARs on clinical trials, and unlike other lymphomas In CLL, there hasn’t been an FDA approval as yet for CAR-T therapy, and we are hopeful for that to change in the future as CARs are modified and may potentially become more effective at eradicating the CLL and hopefully resulting in better side effect profiles and patients who do receive CAR-T therapy, the majority of patients who have received CARs in CLL studies have not had durable remission, unfortunately.

Mary Leer: 

Dr. Khan, what is conditioning therapy and why is it given prior to infusion of the CAR T cells?

Dr. Nadia Khan: 

Thank you, Samuel. Conditioning therapy is a course of – a briefer course of chemotherapy that’s given just prior to CAR-T therapy, really to prepare the body in a way to receive the CARs, and it makes the CARs more effective when there has been a level of immunosuppression to allow the CARs to expand more freely after they have been re-infused into a patient.

Mary Leer: 

Okay, here’s a question that Sandra asks, I’m preparing for CLL treatment, can I take my vitamins, herbs, or other supplements during treatment?

Dr. Nadia Khan: 

Thanks for that excellent question, Sandra. It’s so important to review all of your medications with your provider before starting any therapy during the course of your CLL treatment, drug interactions with herbals and over-the-counter medications can result in serious side effects, some over-the-counters and Herbals can inhibit the effectiveness of CLL therapy. So it’s important to discuss these with your provider on a case-by-case basis.

Mary Leer: 

Dr. Khan, here’s a question that I think many are probably thinking of right now, what tests do you give patients to see if CLL treatment is working?

Dr. Nadia Khan: 

Thank you, Jessica. During the course of CLL treatment and at the end of a time-limited treatment course, we’re assessing for responses, so as a patient is going through their treatment, we may decide to re-image to determine if there has been debulking of lymph nodes. And depending on the treatment that we’re administering and where the lymph nodes are located, we may decide to do imaging sooner or later, so for example, if there are palpable lymph nodes while a patient is on therapy, and we can measure these readily by physical exam in the clinic, we may not feel as compelled to re-image at an early time point, if there is valiantly or in large seen that is hard to palpate. And we want to understand if treatment is working after approximately three to four cycles of therapy, we would assess for a good response to treatment if clinically, it also does appear that patients are responding, and if there was any question as to respond, we would image at an earlier time point when patients are being treated with a Venetoclax [VENCLEXTA] based regimen and there is significant adenopathy or an enlarged spleen, we may reassess the size of lymph nodes and spleen during the course of Venetoclax [VENCLEXTA] ramp-up to determine if patients can be transitioned from inpatient to outpatient ramp-up.

Mary Leer: 

Dr. Khan, this is our final question. Karen asks, with many new therapies available, will watch and wait be redefined for CLL patients? 

Dr. Nadia Khan: 

What an excellent question, Karen. Currently, the strategy for CLL patients is to institute therapy when there is likely to be a benefit with the intervention, and there are studies that are ongoing looking at earlier intervention with oral therapy, and once we see the readout for patients with particularly high-risk features. I think it is possible that we’ll have an alternative strategy for those patients. Thankfully, our CLL patients live very long lives, and what we’ve come to see over decades of treatment experience with our CLL patients is that early intervention to date has not resulted in longer… Longer survival. So at this point, it’s not something that’s recommended, but we may have more information soon.

Mary Leer: 

Dr. Khan, thanks for joining us today and answering all of these questions for our audience. Just a reminder to our audience, please take the CLL-Patient-Expert Q&A survey following this webinar.

Mary Leer: 

Dr. Khan, before we end this program,  what are you optimistic about for the future of CLL? 

Dr. Nadia Khan: 

So I’m very optimistic about the future of CLL therapeutics, we’ve already come to see excellent responses that are very durable with time-limited targeted therapy and immunotherapy approaches. In the future, it is likely that we will be using a more personalized approach to treating any given CLL patient using their genetic and molecular profile to decide on their treatment strategy, a single-agent approach versus multiple targeted therapies to eradicate CLL clones. In the future will be looking at endpoints like minimal residual disease, as well as clonal evolution to help guide our treatment strategy for patients with CLL

Which Tests Do You Need Before Deciding on a CLL Treatment Path?

Which Tests Do You Need Before Deciding on a CLL Treatment Path? from Patient Empowerment Network on Vimeo.

Why do you need biomarker testing before deciding on a treatment plan for your CLL? Learn which key tests should occur before treatment begins and how the results may impact your care decisions.

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Transcript:

Why do you need biomarker testing before deciding on a treatment plan for chronic lymphocytic leukemia—also known as CLL?

The results may predict how your CLL will behave and could indicate that one type of treatment may be more effective than another.

Biomarker testing—also referred to as risk stratification, genetic, or molecular testing—identifies specific gene mutations, proteins, chromosomal abnormalities and/or other molecular changes that are unique to YOUR CLL. 

These changes are only in the CLL cells and do not affect all the cells in your body.  These are not genetic changes that you inherit or pass on to your children.

Several tests that may help to guide these decisions, include:

  • The FISH test identifies chromosome abnormalities, including high-risk markers like the 17p deletion.
  • Next is testing for IGHV mutational status, which determines whether IGHV is mutated in a patient. Mutated IGHV indicates lower-risk CLL.
  • Then there is the TP53 mutation status test, which looks for mutations in the TP53 gene.

So why do these tests results matter?

One reason they matter is because patients with certain biomarkers may respond better to one treatment approach over another. 

  • For example, patients who are IGHV mutated have a special benefit from chemoimmunotherapy with FCR and could consider this approach. Patients who are IGHV unmutated should not consider FCR.
  • Additionally, patients with deletion 17p or TP53 mutations should never take chemoimmunotherapy, as it results in only a very short-term benefit.

When are these tests administered?

IGHV status typically doesn’t change over time and only needs testing at diagnosis or before your initial treatment.

FISH and TP53 should be repeated before beginning every treatment regimen, as these results may change over the course of the disease.

How can you make sure you have had essential biomarker testing?

  • First, always speak up and ask questions. Remember, you have a voice in YOUR CLL care. Your doctor is expecting you to ask questions and should be able to answer them.
  • Ask your doctor if you have had or will receive biomarker testing—including FISH, IGHV, and TP53–and how the results may impact your care and treatment plan. Be sure to ask for paper or electronic copies of your important test results.
  • And finally, bring a friend or a loved one to your appointments to help you process information and to take notes.

To learn more about your CLL and access tools for self-advocacy, visit powerfulpatients.org/CLL.

What Are Common Symptoms of CLL?

What Are Common Symptoms of CLL? from Patient Empowerment Network on Vimeo.

What are common signs and symptoms of chronic lymphocytic leukemia (CLL)? Dr. Lindsey Roeker reviews how CLL is typically diagnosed and symptoms that patients may experience.

Dr. Lindsey Roeker is a hematologic oncologist at Memorial Sloan Kettering Cancer Center. Learn more about Dr. Roeker here.

Download Guide

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Transcript:

Katherine:                  

How is CLL diagnosed?

Dr. Roeker:                 

So, for most patients, CLL is diagnosed after a routine blood test shows a high white blood cell count. That’s kind of the most common way that we find people entering into our clinic. Other things that people can notice is they have lumps or bumps that they’ve felt in their neck or under their armpits. Those are some other symptoms that can lead to the diagnosis, but often once a patient finds that their white blood cell count is high, some additional testing is done, and the diagnosis of CLL is made.

Katherine:                  

What are some common symptoms of CLL? You mentioned the lumps and bumps.

Dr. Roeker:                 

So, often in early stages, the lumps and bumps in the neck are the most common that people recognize, but fevers or chills, night sweats, where patients are waking up drenched, having to change their pajamas, or weight loss without trying, are some other symptoms that can raise some alarm bells and make people start looking for something.

And CLL can be a diagnosis that can be found through that, as well.

Confusing CLL Terms Defined

Confusing CLL Terms Defined from Patient Empowerment Network on Vimeo.

What is FISH testing? What is IGHV? Physician assistant Danielle Roberts explains the meaning of these often confusing terms and their role in disease monitoring and CLL treatment decisions.

Danielle Roberts is a physician assistant with the Bone Marrow Stem Cell Transplant (BMT) team at Winship Cancer Institute at Emory University. Learn more here.

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Transcript:

Danielle Roberts:    

So, a FISH test is a test from your either blood in your bloodstream or from your bone marrow biopsy. And it stands for florescence in situ hybridization. And this is a highly specific test that looks at the chromosomal changes with CLL. This can be done in the peripheral blood or in the bone marrow.

And it’s important to remember that when we consider genetic testing and CLL, we aren’t talking about inherited genes, but the abnormalities that occur within the CLL itself.

So, an IGHV test is a mutational test that stands for the immunoglobulin heavy-chain variable gene locus. This can also be done in the peripheral blood and the bone marrow biopsy. This test can help us determine treatment options as well as help with determining what high-risk features there are for your particular disease.

So, 17p deletion is the deletion of the long arm of chromosome 17. This can be seen at initial diagnosis or it can be acquired later on in disease progression. So, for all patients this is one of the more important tests that if you’re going to ask your doctor if you’ve had, you should ask at a diagnosis. If you’ve relapsed later on, you should ask again if that mutational status is being observed or checked in your follow-up testing.

17p deletion is something that can be acquired along the course of your disease progression. It is not always seen at initial diagnosis but can be acquired if you are relapsed or refractory. Therefore I recommend that every time you’re having peripheral blood for flow or if you’re having bone marrow biopsies, especially if it’s for treatment planning purposes, you should advocate to your physician team to make sure that this test is being performed as it will drive – or as it can drive treatment decision-making.

What Tests Should CLL Patients Insist They Receive?

What Tests Should CLL Patients Insist They Receive? from Patient Empowerment Network on Vimeo.

Which chronic lymphocytic leukemia (CLL) tests are most critical in CLL care? Dr. Jennnifer Woyach details the key tests, what the tests identify, and how they help provide optimal care personalized to each patient.

Dr. Jennifer Woyach is a hematologist-oncologist specializing in chronic lymphocytic leukemia (CLL) at Ohio State’s Comprehensive Cancer Center – James Cancer Hospital & Solove Research Institute. Find out more about this expert here. 

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Transcript:

Katherine:                  

The goal of this program, Dr. Woyach, is to provide the confidence and tools for patients to advocate for the essential tests to get the best care personalized to them. Are there specific tests that patients should make sure they have?

Dr. Woyach:               

Yeah. In CLL, I would say there are three that are very, very important before starting treatment. The first is something called the IGHV mutational status.

What that is defined as is the changes in the variable region of the immunoglobulin heavy chain. That’s a big mouthful that doesn’t mean a lot to most people. So, I’ll give you just a little background on what that really means biologically and then, what that means clinically. So, every B lymphocyte, so a normal B lymphocyte and a CLL cell, has receptors on the surface of the cell that allow it to interact with the environment. And in a normal B lymphocyte, this is really important for the immune system. So, bacteria, virus, something is in the body and the B cell surface receptor is going to be able to recognize that that’s not supposed to be there and then, do something about it.

In CLL, the surface receptors don’t do a lot of interacting with the outside environment but they’re still present there. And in a normal B cell development, the B cells are initially formed in the bone marrow.

And at the time that they’re formed, every one of those receptors is exactly the same. So, we can do DNA sequencing on those receptors and you’ll see that every one is identical. So, during a normal development of a B cell, it undergoes this process that’s called somatic hypermutation, which is where those receptors mutate or change. And that’s important because then, they can recognize different things. And so, you end up with this whole repertoire of thousands or millions of B cells that all are a little bit different and can recognize something different.

So, CLL cells, they’re all clonally related to each other. They’re all going to have the same receptor on their surface. And about 60 percent of the time that receptor is different than the newly born B cells. And so, this is probably a little bit more simplistic than it actually is. But the way we think about that is that those B cells or those CLL cells, which we call mutated because they underwent that mutational process, we think that that means that they come from a more mature initiating cell.

And they tend to be less aggressive, more slow growing. The other 40 percent of patients, if you look at the receptor on their surface, it’s exactly the same as the new B cells in the bone marrow. And we call those IGHV unmutated because they haven’t done that mutational process. And they behave very differently. So, in mutated CLL, only about half of people will ever need therapy in their lives. An average time from diagnosis to first treatment is about 10 years. In contrast to those patients who have unmutated IGHV, basically, all of those people will need therapy at some point in their lives. And average time from diagnosis to first treatment is about three years.

So, you can see how it really breaks people up into two very different categories of disease.

So, that’s the first test and one that’s really important. That’s also one that doesn’t change during the course of the disease. So, if somebody is diagnosed with mutated CLL, it’s always mutated. So, the next marker that’s important is, actually, chromosome changes. So, we know that there are a few different recurrent chromosome abnormalities in CLL that are common and important prognostically. So, one of these is a deletion of part of chromosome 13. It’s called a 13q deletion. It indicates, again, very slow-growing CLL. Patients how have normal chromosomes also are very good disease biology.

Some people have an extra copy of chromosome 12. That’s called trisomy 12, and that’s an intermediate marker. And then, there are two markers that are associated with a little bit more aggressive CLL. One is a deletion of proto chromosome 11. That’s called an 11q deletion.

And the other one is a deletion of proto chromosome 17 called a 17p deletion. These are all abnormalities that are important to test for. And the way that we test for these is something called FISH testing. And FISH stands for fluorescence in situ hybridization. And it’s a way to use an antibody to look for specific abnormalities in the CLL cells. So, that’s important. And another thing that can be done at specialized centers is something called stimulated cytogenetics. So, I mentioned to you with FISH testing, we’re looking for specific abnormalities with antibodies. But the things that we don’t test for we’re not going to see.

So, if they have a chromosome change that we don’t have an antibody looking at, we’ll never detect it. And we know that patients with CLL who have what’s called a complex karyotype, which is three or more chromosome abnormalities, they also have more aggressive disease.

So, like I said, at specialized centers, we can do what’s called a stimulated karyotype, which is where we look at all of the chromosomes. So, that’s FISH testing and karyotype. And then, the last thing is, actually, doing DNA sequencing for a specific mutation called a TP53 mutation. And TP53 is an important tumor suppressor protein. And it is mutated quite commonly in CLL. About 8 to 10 percent of patients at the time of first treatment and, actually, up to about 40 percent of people later on in the course of the disease. Most of the time, we see TP53 mutations occur at the same time as 17p deletions. About 80 percent of the time, those occur together but they can occur on their own.

So, that’s the third test that’s often helpful, especially prior to starting treatment.

Katherine:                  

Do patients need to be retested over time?

Dr. Woyach:               

Yeah. So, for the TP53 mutation and for FISH, it’s important to test for those before each line of therapy. Because those are so important in indicating disease biology and, specifically, with the 17p deletion and TP53 mutation, those indicate patients that are likely to not have as good of a response to treatment. It’s always important to check for those prior to therapy.

What Should You Know About CLL Genetic Testing?

What Should You Know About CLL Genetic Testing? from Patient Empowerment Network on Vimeo.

In chronic lymphocytic leukemia (CLL) diagnosis and disease management, genetic testing plays a key role. Dr. Jennifer Woyach explains what is examined in CLL genetic testing, the timing and administration of testing, and testing advances.

Dr. Jennifer Woyach is a hematologist-oncologist specializing in chronic lymphocytic leukemia (CLL) at Ohio State’s Comprehensive Cancer Center – James Cancer Hospital & Solove Research Institute. Find out more about this expert here. 

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Transcript:

Katherine:                  

Before we get deeper into our conversation about genetics, there are a few terms that patients are often confused by. As a primer, I thought we could start by defining some of these terms. First, what is genetic or molecular testing?

Dr. Woyach:               

So, all cancer cells will have a collection of mutations or abnormalities in the DNA that either make the cell a cancer cell or make it behave in a certain way. And so, these mutations are referred to as the genetic abnormalities of the CLL cells. So, when we talk about genetic testing in CLL, we use it to mean a number of things. We can use it to look specifically for types of mutations so types of genetic abnormalities.

 We also sometimes use that as a kind of catch-all term like genetic or molecular testing also to refer to looking at changes in the chromosomes inside of a CLL cell. That’s also called cytogenetic testing. And then, we also use a number of tests in CLL where we look at specific, not necessarily abnormalities, but just changes in the cell that can indicate a certain type of behavior.

Katherine:                

How is this different from genomic testing?

Dr. Woyach:               

So, genetic and genomic testing, I think, are usually used interchangeably. But sometimes, we use them in different contexts but they really mean the same thing in this case.

Katherine:                  

Okay. And what is a chromosome change?

Dr. Woyach:              

So, as you might remember from biology class maybe a long time ago, as it was for me, inside a cell, so a normal cell or a cancer cell, you have the nucleus, which holds the DNA.

And the DNA is organized into chromosomes. And so, when a cell goes through division, it takes those chromosomes, copies them and then, breaks them apart into two different cells. So, changes can happen in the level of the DNA itself. So, a mutation where one base is changed to something different. So, that would be just like a single nucleotide change. And that’s something you’re not going to see as a change to a chromosome. Another thing that can happen in CLL and in other cancers, too, is that during that process of cell division, an entire chromosome could be duplicated. It could be absent.

More commonly, parts of chromosomes can change. This is all because cancer cells just do a very poor job of editing their division.

An in normal cells, there are multiple steps along the way from the process of copying the genes to copying the chromosomes to doing the division. And every step along the way, if something happens incorrectly, which happens a lot, the cell usually just dies. But a cancer cell is not going to do that because it has so many signals that keep telling it to stay alive that it can tolerate a lot of different abnormalities. And so, you end up with cells that are just very different from what you would see normally.

Katherine:                  

All right. Well, that’s a great way for us to start. Let’s go into the discussion of the relationship between testing and CLL. How is testing administered?

Dr. Woyach:               

So, almost all testing, in terms of molecular genomic testing in CLL, can be done on a blood sample. So, that’s one important thing.

The CLL guidelines recommend that testing for certain prognostic factors be done before the administration of therapy. So, at the very least, before somebody starts treatment, they should have these tests performed. In my practice and I think most CLL specialists find it really helpful to do these tests, not necessarily just at the time of treatment but really at the time of diagnosis or the time we first see the patient because CLL is a very heterogenous disease, which means that it behaves very differently in different people. So, there are some people that are diagnosed and will go 10 or 20 years before they need any treatment.

And many don’t need treatment at all. Whereas other people are very likely to need treatment within the first few years after diagnosis. Some of the genetic tests that we do can help counsel patients on where they’re likely to fall in that spectrum.

And so, I think that’s helpful for people to know early on in the disease course. But really, the tests can be performed at any time before treatment

Katherine:              

Have there been advances in testing?

Dr. Woyach:               

Absolutely. I think in every cancer, we’ve learned so much more about the biology of the disease, specific mutations that cause specific behaviors of cells, and really much more in CLL about the common genetic changes and what those means to response to therapy.

CLL Treatment: Finding the Best Option for YOU

CLL Treatment: Finding the Best Option for YOU from Patient Empowerment Network on Vimeo.

How could genetic testing results impact your chronic lymphocytic leukemia (CLL) treatment options and overall care? Dr. Jennifer Woyach discusses essential molecular testing and provides tools for self-advocacy and decision making.

Dr. Jennifer Woyach is a hematologist-oncologist specializing in chronic lymphocytic leukemia (CLL) at Ohio State’s Comprehensive Cancer Center – James Cancer Hospital & Solove Research Institute. Find out more about this expert here. 

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Transcript:

Katherine:                  

Welcome to Insist CLL, a program focused on empowering chronic lymphocytic leukemia patients to take an active role and insist on better care. Today, we’ll discuss the latest advances in CLL, including the role of genetic testing and how this may affect treatment options. I’m Katherine Banwell, your host for today’s program. Joining me is Dr. Jennifer Woyach. Welcome. Would you please introduce yourself?

Dr. Woyach:               

Sure. My name is Jennifer Woyach. I’m a CLL specialist from the Ohio State University.

Katherine:                  

Thank you. A reminder, this program is not a substitute for seeking medical advice. Please refer to your own healthcare team. Well, Dr. Woyach, let’s start by understanding CLL. Would you briefly walk us through what CLL actually is?

Dr. Woyach:               

Sure. CLL is a cancer of the blood, the lymph nodes, and the bone marrow.

And it happens when a particular type of white blood cell called a B lymphocyte acquires genetic mutations and transforms into a cancer cell. And then, over time, those cancer cells continue to grow and divide. And they can cause symptoms such as enlarged lymph nodes if the cells get stuck in the lymph nodes and continue to grow there. It can cause a high white blood cell count, which usually doesn’t cause any symptoms but is one of the things that we see often in CLL. And then, it can also cause the bone marrow to not be able to produce normal cells because it can get so infiltrated or so full of CLL cells.

And this can cause things like anemia, which is lowering of the red blood cell count and thrombocytopenia, which is lowering of your platelet count.

Katherine:                  

What are the steps involved in reaching a diagnosis?

Dr. Woyach:               

CLL is an interesting disease because it’s one of the only cancers that does not require a biopsy of something for a diagnosis.

So, we can, actually, make the diagnosis of CLL based on the peripheral blood. So, just a blood draw in somebody’s doctor’s office. Usually, CLL is diagnosed in the asymptomatic stage. So, somebody goes to their primary care doctor, has blood drawn usually for another reason, and is found to have a high white blood cell count or sometimes even a fairly normal white blood cell count but a high percentage of lymphocytes. That certain type of cancerous white blood cell. So, the next step in the diagnosis then is something called peripheral blood flow cytometry, which is a specialized test where we look at the markers or antigens on the surface of white blood cells.

So, there is kind of a code of these markers on the surface of all of your blood cells that can tell what type of cells they are. So, for CLL in particular, we’ll see that the cells express some of the normal markers we would see on a normal B lymphocyte.

Things like CD19, CD20, CD23. But they also express a marker called CD5, which is found on normal T lymphocytes but shouldn’t be found on B lymphocytes. And so, this collection of surface markers can make the diagnosis of CLL. Sometimes, we do need to do extra studies like a bone marrow biopsy or a lymph node biopsy. But often times, those are not necessary at the time of diagnosis.

Katherine:                  

When you meet with patients, Dr. Woyach, what are some common misconceptions that you hear about?

Dr. Woyach:               

I think the biggest thing that I hear, and grant it I see a lot of patients after they’ve been diagnosed by someone, gone to see an oncologist and then, come to me after, but one of the common things that I hear is that somebody has told them along the way that they have the good type of cancer, which I think is not a very helpful thing to hear as a patient because, of course, no cancer is a good type of cancer.

I think it’s important to note that CLL is one that has a lot of treatment options and usually extended survival. But I think that’s one of the most common misconceptions that I hear.

Katherine:                  

Before we get deeper into our conversation about genetics, there are a few terms that patients are often confused by. As a primer, I thought we could start by defining some of these terms. First, what is genetic or molecular testing?

Dr. Woyach:               

So, all cancer cells will have a collection of mutations or abnormalities in the DNA that either make the cell a cancer cell or make it behave in a certain way. And so, these mutations are referred to as the genetic abnormalities of the CLL cells. So, when we talk about genetic testing in CLL, we use it to mean a number of things. We can use it to look specifically for types of mutations so types of genetic abnormalities.

We also sometimes use that as a kind of catch all term like genetic or molecular testing also to refer to looking at changes in the chromosomes inside of a CLL cell. That’s also called cytogenetic testing. And then, we also use a number of tests in CLL where we look at specific, not necessarily abnormalities, but just changes in the cell that can indicate a certain type of behavior.

Katherine:                  

How is this different from genomic testing?

Dr. Woyach:               

So, genetic and genomic testing, I think, are usually used interchangeably. But sometimes, we use them in different contexts but they really mean the same thing in this case.

Katherine:                  

Okay. And what is a chromosome change?

Dr. Woyach:               

So, as you might remember from biology class maybe a long time ago, as it was for me, inside a cell, so a normal cell or a cancer cell, you have the nucleus, which holds the DNA.

And the DNA is organized into chromosomes. And so, when a cell goes through division, it takes those chromosomes, copies them and then, breaks them apart into two different cells. So, changes can happen in the level of the DNA itself. So, a mutation where one base is changed to something different. So, that would be just like a single nucleotide change. And that’s something you’re not going to see as a change to a chromosome. Another thing that can happen in CLL and in other cancers, too, is that during that process of cell division, an entire chromosome could be duplicated. It could be absent.

More commonly, parts of chromosomes can change. This is all because cancer cells just do a very poor job of editing their division.

An in normal cells, there are multiple steps along the way from the process of copying the genes to copying the chromosomes to doing the division. And every step along the way, if something happens incorrectly, which happens a lot, the cell usually just dies. But a cancer cell is not going to do that because it has so many signals that keep telling it to stay alive that it can tolerate a lot of different abnormalities. And so, you end up with cells that are just very different from what you would see normally.

Katherine:                  

All right. Well, that’s a great way for us to start. Let’s go into the discussion of the relationship between testing and CLL. How is testing administered?

Dr. Woyach:               

So, almost all testing, in terms of molecular genomic testing in CLL, can be done on a blood sample. So, that’s one important thing.

The CLL guidelines recommend that testing for certain prognostic factors be done before the administration of therapy. So, at the very least, before somebody starts treatment, they should have these tests performed. In my practice and I think most CLL specialists find it really helpful to do these tests, not necessarily just at the time of treatment but really at the time of diagnosis or the time we first see the patient because CLL is a very heterogenous disease, which means that it behaves very differently in different people. So, there are some people that are diagnosed and will go 10 or 20 years before they need any treatment.

And many don’t need treatment at all. Whereas other people are very likely to need treatment within the first few years after diagnosis. Some of the genetic tests that we do can help counsel patients on where they’re likely to fall in that spectrum.

And so, I think that’s helpful for people to know early on in the disease course. But really, the tests can be performed at any time before treatment

Katherine:                  

Have there been advances in testing?

Dr. Woyach:               

Absolutely. I think in every cancer, we’ve learned so much more about the biology of the disease, specific mutations that cause specific behaviors of cells, and really much more in CLL about the common genetic changes and what those means to response to therapy.

Katherine:                  

The goal of this program, Dr. Woyach, is to provide the confidence and tools for patients to advocate for the essential tests to get the best care personalized to them. Are there specific tests that patients should make sure they have?

Dr. Woyach:               

Yeah. In CLL, I would say there are three that are very, very important before starting treatment. The first is something called the IGHV mutational status.

What that is defined as is the changes in the variable region of the immunoglobulin heavy chain. That’s a big mouthful that doesn’t mean a lot to most people. So, I’ll give you just a little background on what that really means biologically and then, what that means clinically. So, every B lymphocyte, so a normal B lymphocyte and a CLL cell, has receptors on the surface of the cell that allow it to interact with the environment. And in a normal B lymphocyte, this is really important for the immune system. So, bacteria, virus, something is in the body and the B cell surface receptor is going to be able to recognize that that’s not supposed to be there and then, do something about it.

In CLL, the surface receptors don’t do a lot of interacting with the outside environment but they’re still present there. And in a normal B cell development, the B cells are initially formed in the bone marrow.

And at the time that they’re formed, every one of those receptors is exactly the same. So, we can do DNA sequencing on those receptors and you’ll see that every one is identical. So, during a normal development of a B cell, it undergoes this process that’s called somatic hypermutation, which is where those receptors mutate or change. And that’s important because then, they can recognize different things. And so, you end up with this whole repertoire of thousands or millions of B cells that all are a little bit different and can recognize something different.

So, CLL cells, they’re all clonally related to each other. They’re all going to have the same receptor on their surface. And about 60% of the time that receptor is different than the newly born B cells. And so, this is probably a little bit more simplistic than it actually is. But the way we think about that is that those B cells or those CLL cells, which we call mutated because they underwent that mutational process, we think that that means that they come from a more mature initiating cell.

And they tend to be less aggressive, more slow growing. The other 40% of patients, if you look at the receptor on their surface, it’s exactly the same as the new B cells in the bone marrow. And we call those IGHV unmutated because they haven’t done that mutational process. And they behave very differently. So, in mutated CLL, only about half of people will ever need therapy in their lives. An average time from diagnosis to first treatment is about 10 years. In contrast to those patients who have unmutated IGHV, basically, all of those people will need therapy at some point in their lives. And average time from diagnosis to first treatment is about three years.

So, you can see how it really breaks people up into two very different categories of disease.

So, that’s the first test and one that’s really important. That’s also one that doesn’t change during the course of the disease. So, if somebody is diagnosed with mutated CLL, it’s always mutated. So, the next marker that’s important is, actually, chromosome changes. So, we know that there are a few different recurrent chromosome abnormalities in CLL that are common and important prognostically. So, one of these is a deletion of part of chromosome 13. It’s called a 13q deletion. It indicates, again, very slow growing CLL. Patients how have normal chromosomes also are very good disease biology.

Some people have an extra copy of chromosome 12. That’s called trisomy 12 and that’s an intermediate marker. And then, there are two markers that are associated with a little bit more aggressive CLL. One is a deletion of proto chromosome 11. That’s called an 11q deletion.

And the other one is a deletion of proto chromosome 17 called a 17p deletion. These are all abnormalities that are important to test for. And the way that we test for these is something called FISH testing. And FISH stands for fluorescence in situ hybridization. And it’s a way to use an antibody to look for specific abnormalities in the CLL cells. So, that’s important. And another thing that can be done at specialized centers is something called stimulated cytogenetics. So, I mentioned to you with FISH testing, we’re looking for specific abnormalities with antibodies. But the things that we don’t test for we’re not going to see.

So, if they have a chromosome change that we don’t have an antibody looking at, we’ll never detect it. And we know that patients with CLL who have what’s called a complex karyotype, which is three or more chromosome abnormalities, they also have more aggressive disease.

So, like I said, at specialized centers, we can do what’s called a stimulated karyotype, which is where we look at all of the chromosomes. So, that’s FISH testing and karyotype. And then, the last thing is, actually, doing DNA sequencing for a specific mutation called a TP53 mutation. And TP53 is an important tumor suppressor protein. And it is mutated quite commonly in CLL. About eight to ten percent of patients at the time of first treatment and, actually, up to about forty percent of people later on in the course of the disease. Most of the time, we see TP53 mutations occur at the same time as 17p deletions. About 80% of the time, those occur together but they can occur on their own.

So, that’s the third test that’s often helpful, especially prior to starting treatment.

Katherine:                  

Do patients need to be retested over time?

Dr. Woyach:               

Yeah. So, for the TP53 mutation and for FISH, it’s important to test for those before each line of therapy. Because those are so important in indicating disease biology and, specifically, with the 17p deletion and TP53 mutation, those indicate patients that are likely to not have as good of a response to treatment. It’s always important to check for those prior to therapy.

Katherine:                  

We have a patient question. I have 17p deletion. Should I be worried?

Dr. Woyach:               

So, 17p deletion is usually associated with more aggressive disease biology almost always associated with that unmutated IGHV. The reason I bring that up is there are a very small subset of patients who have 17p deletion and mutated IGHV who, actually, have pretty indolent or slow growing disease.

People who don’t, which is the majority of them with 17p deletion, do have a shortened time to treatment and shortened survival with most of our current therapies. There have been a lot of advances though in the treatment of 17p deleted CLL. And may of our newer therapies can very much prolong the remission time in the lives of patients with 17p deletion.

Katherine:                  

Dr. Woyach, how do these chromosomal changes affect disease progression and prognosis?

Dr. Woyach:               

So, the markers that are associated with more aggressive disease biology usually are going to be associated with people that need treatment within the first few years after diagnosis, especially those people who have 17p deletion, 11q deletion, unmutated IGHV.

Katherine:                  

What exactly are prognostic factors? Would you define that?

Dr. Woyach:               

Sure. Prognostic factors, and I mentioned three of them, the IGHV, FISH, and the TP53 mutation, are ones that have been studied extensively and shown that the presence of this marker or some change in this marker is associated with a change in the biology of the disease or in the response to therapy.

Katherine:                  

How does the identification of these changes or mutations affect treatment options?

Dr. Woyach:               

Well, right now, we’re lucky in CLL because we have a lot of treatment options. I would say the most important changes when we’re talking about somebody with CLL that is about to start their first treatment is the decision of whether chemotherapy is ever appropriate. So, almost everybody with CLL now is treated exclusively with targeted therapies.

So, nonchemotherapeutic options. There are some people who are young, and in CLL terms that means under the age of 65, who have mutated IGHV and who otherwise have good genetic list disease. So, normal chromosomes of the 13q deletion, no TP53 mutation. That small subset of patients, actually, has the potential to be cured with a specific type of chemotherapy. It’s called FCR or fludarabine, cyclophosphamide, rituximab. So, for those young, healthy patients, it’s really important to know those risk factors to know if they are in that group that has that potential for cure.

The converse to that is if patients don’t fall in that group, they probably shouldn’t receive chemotherapy as their first treatment because it’s not as effective as our other therapies.

Katherine:                  

Yeah. It makes sense.

Dr. Woyach:               

And then, even in the future with first and other treatments with novel therapies, we know that patients with 17p deletion and TP53 mutation tend to have a shorter response time. And so, what I use that for in my practice is I know that those are people that I really have to be sure that we’re following them closely, taking any signs of progression seriously, and always have a back up plan for what we’re going to do if this treatment doesn’t work.

Katherine:                  

We have another question from a patient who wants to know if their children will inherit CLL. Is there any link between inherited mutations and CLL?

Dr. Woyach:               

That’s a very, very common and really important question. I would say of the hematologic cancers, CLL is one with higher linkage in families, which means that people with CLL are more likely to have another family member with CLL though it’s still not very common.

And it’s very different from breast cancer or the solid tumors where we know that these specific mutations indicate families that are going to have risk of disease. There has actually been a lot of study over the years of families that tend to have multiple people with CLL. Unfortunately, there really have not been genes identified that are the reason for those family linkages. I think there has been only one family that I know of where they’ve actually found a gene that was likely the cause of multiple family members’ illnesses. So, yeah, there is no indication to test family members.

I tell people do not worry that you’re going to pass this to your children or your grandchildren. CLL is not something that we should be using as like a marker of whether you should have kids or should have anything like that.

So, maybe a little more likely in family members but not enough to really be worried about that.

Katherine:                  

What are the differences or difference between inherited and acquired genetic mutations?

Dr. Woyach:               

So, inherited mutations are those that you get from your parents. And there are lots of inherited mutations that, actually, can predispose to cancer. Specifically, I mentioned the TP53 mutation and CLL cells. Well, there are also people who inherit a TP53  mutation have risk factors for multiple cancers. And CLL, specifically, every mutation that we talk about is an acquired mutation. So, that’s also known as a somatic mutation. So, they’re mutations in the cancer cells. But if you did DNA sequencing of the normal cells, they would not be there.

Katherine:                  

We have a question from a patient. If I have FCR, does that rule out me using a targeted therapy later on?

Dr. Woyach:               

Absolutely not. And, actually, all of the studies of the targeted therapies, all of the early studies were done in people who previously had had chemotherapy. Most of them had received FCR. So, certainly, receiving chemotherapy doesn’t mean that you can’t get a targeted therapy later on.

Katherine:                  

What are other factors that are important to consider when deciding on a treatment route?

Dr. Woyach:               

So, besides the genetic factors we talked about, other things are age and very closely related to age is fitness status. So, how active is somebody? How able are they to do all of their normal activities? Are there other health problems that we need to be concerned about when thinking of treatment?

As well, certain medications can influence treatment choices, specifically, with oral therapies where there might be drug interactions. And then, also a lot of the decision of frontline therapy is patient preference right now. So, do people prefer to have a time limited therapy? Do they prefer to have an indefinite therapy? Do they prefer an all p.o. regimen or a mix of p.o. and IV? So, there are definitely a lot of considerations when thinking about frontline treatment.

Katherine:                  

Dr. Woyach, what do you feel is the patient’s role in this conversation about treatment approaches?

Dr. Woyach:               

I think that, obviously, the patient is the most important part of the talk of treatment indications. Like I mentioned, sometimes we have the discussion of chemotherapy versus a targeted therapy. More often, the discussion is we have three approved frontline CLL therapies right now. We have two BTK inhibitors or Bruton’s tyrosine kinase inhibitors, ibrutinib, acalabrutinib.

And then, we have a BCL-2, venetoclax, that’s given in combination with an antibody called obinutuzumab. These are very different treatments in terms of side effects, [inaudible] [00:28:13] how they’re administered, how often they’re administered, just as an example. The BTK inhibitors are pills. And they’re meant to be given indefinitely. So, you start them with plans that you’re not going to stop them, unless the patient doesn’t tolerate them or they stop working. And so, with that type of regimen, you have the kind of burden of being on treatment for a long period of time.

But on the flipside, it’s very easy to start treatment. So, if you decide you want a BTK inhibitor, I write a prescription for it, it comes to your house, you start it. I usually see patients monthly for the first six months and then, we go to every three months. It’s very easy to start treatment.

The other type of treatment, the Venetoclax plus with the obinutuzumab regimen, that’s the BCL-2 inhibitor with an antibody, it’s a finite therapy. So, people are treated for a year and then, they go off treatment. The flipside of that is they’re a lot more time intensive in the beginning. So, you have the IV therapy with the obinutuzumab. Venetoclax you, actually, have to ramp up the dose so patients have to come in weekly for the first five weeks and they have to come in monthly for their infusions. So, it’s much more time intensive upfront but then, you get to stop treatment. And so, those are considerations that I can’t answer for somebody.

I don’t know which one people would prefer and people prefer different things. So, we spend a lot of time talking about all of the different scenarios and what’s going to make the therapy work best for the patient.

Katherine:                  

How can patients stay informed about CLL?

Dr. Woyach:               

There is a lot of good information about CLL that’s available online through The Leukemia & Lymphoma Society.

They have a number of resources for lots of different cancers, including CLL. There are a number of different patient centered websites. One is called the CLL Society. There are others that are heavily moderated, provide a lot of good information, and tend to stay on topic with CLL current developments and don’t get into the weeds too much I would say.

Katherine:                  

If there are side effects, what would some of the side effects be for these targeted therapies?

Dr. Woyach:               

So, it depends on the drug. So, BTK inhibitors, specifically, ibrutinib can cause some joint and muscle pain, some rashes, diarrhea, heart burn. Those are things that tend to, if they’re going to happen, usually happen earlier on in treatment and tend to get better over time. It can also cause high blood pressure. It can cause an abnormal heart rhythm called atrial fibrillation.

So, those are things we watch out for with ibrutinib. Acalabrutinib really has all of the same side effects but for many of them, they don’t occur as often. And then, the tradeoff there is ibrutinib is given once a day and acalabrutinib is given twice a day. With venetoclax plus obinutuzumab with that regimen, you get a lot more hematologic toxicity. So, you see more lowering of the good white blood cell count, which is, obviously, a risk for infections. That regimen comes with a risk of something called tumor lysis syndrome, which is where the cells can break down too quickly and cause damage to the kidneys, damage to the heart.

It can also cause some GI disturbance like some diarrhea, nausea, abdominal pain, things like that. I see there are a lot of side effects. And, of course, when I’m talking to a patient about treatment, we go over them in more detail than that. But I think the important thing is with all of these therapies, we do have ways to manage these side effects.

One thing I think is important for patients to remember is your doctor doesn’t know you’re having side effects unless you tell them. So, we know that people have these side effects. But if you don’t tell us that you’re having diarrhea or heart burn or things like that, we can’t help with it. And we have a lot of medicines that can help these things.

Katherine:                  

That’s a good point. Are there emerging treatments patients should know about?

Dr. Woyach:               

Yeah. There are a lot of really exciting things going on in CLL right now. And CLL is a disease that has been completely transformed in the last five to ten years and is poised to do so again. So, I mentioned these therapies that we use for frontline treatment and there are clinical trials now combining them together. So, these agents work so well on their own. Are they going to be even better if we add them together?

There are also newer target therapies, different targets that we are finding increasingly important in CLL, as well as a modality called CAR-T cells, which most people have heard of where we take patients’ own T cells, modify them in the lab and then, give them back with a goal of getting those cells engineered to kill CLL cells.

These are all things that are not ready for prime time in CLL yet but are available in clinical trials. And I think one other thing I’d really like to put a plug in for is clinical trials in CLL because right now, we’re at a point where our therapies are really very good. But if people just do those treatments, we are never going to figure out which one is the best or figure out, for specific types of patients, which treatment is the best. And so, I advocate that any of my patients that are eligible for clinical trials should consider them because that’s how we make progress in the disease from an altruistic sense.

That’s how we make things better for everybody. That’s one way a patient can think about it. But more personally than that, being in a clinical trial gives somebody the opportunity to get a treatment that they otherwise wouldn’t get that might be better than our standard of care therapies.

Katherine:                  

Dr. Woyach, as a researcher in the field, why are you hopeful?

Dr. Woyach:               

I am so hopeful in CLL because there is so much that we’re learning every day about the biology of the disease, about specific mutations and other genetic factors that are important and really can be targeted by new drugs. Paralleling our understanding of the disease, there also are many more techniques to make these targeted therapies that kill cancer cells selectively while sparing normal cells and making our drugs even more tolerable.

And I think both the targeted therapies like this and the potential of combining them, figuring out sequences that are best but then, also these newer modalities where we, actually, get the immune system involved like the CAR-T cells. They’re making CAR NK cells now. And just lots of other strategies that could be used together with targeted therapies to, hopefully, cure the disease.

Katherine:                  

Thank you for taking the time to join us today and sharing all of this information with the patients. We appreciate it.

Dr. Woyach:               

Of course. It’s my pleasure.

Katherine:                  

Please take a moment to fill out our survey. It helps us as we plan upcoming programs. And thank you to all of our partners. To learn more about CLL and to access tools to help you become a proactive patient, visit Powerfulpatients.org. I’m Katherine Banwell.

Ask Your Doctor About These Essential Genetic Tests for CLL

Ask Your Doctor About These Essential Genetic Tests for CLL from Patient Empowerment Network on Vimeo.

Genetic testing results can impact a chronic lymphocytic leukemia (CLL) patient’s treatment options and provide a deeper understanding into their disease. Dr. Steven Coutre, a CLL specialist, reviews essential tests and explains their role in CLL care.

Dr. Steven Coutre is a Professor of Medicine in the Hematology Department at Stanford University Medical Center. Learn more about this expert here.

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Transcript:

Dr. Steven Coutre:

In terms of testing for CLL, additional testing, of course, diagnostically, it’s generally not a challenge. It’s very straight-forward. A test that we call Flow Cytometry on a blood sample is usually sufficient to establish the diagnosis. Very, very uncommonly would a bone marrow exam be needed, for example. And in routine practice, also, we don’t necessarily give CT scans to establish a diagnosis or even to, as people say, stage the disease. It really isn’t necessary in most cases.

However, we do have a staging system that correlates with the extent of the disease and that’s simply based on our exam and blood counts, but people also want more information. They wanna know how they’re gonna do, specifically. So, we can add additional tests, genetic testing as people often call it, that can further subdivide individuals into groups that give you additional information on how you might do, meaning if you’re without symptoms, and an observation is recommended, you wanna know, “Well, how long is it gonna be before I need treatment?” Although our staging system gives that information, we can refine that further.

One test is the so-called FISH test, which looks at specific chromosome abnormalities, and the second test that’s generally used is called the IGHV Mutation Assay. That’s really looking at what’s called the mutational status of your immunoglobulin genes. So, it’s really those two broad categories that are most relevant.

Now, we don’t necessarily advocate doing that testing on everyone at the time of diagnosis. Certainly, not everyone who is without symptoms, where we’ve already decided that treatment is not indicated. So, as you can imagine, you can do that testing. You might come up with a profile that’s less favorable. And then, instead of the watch and wait approach, or as folks like to call it, “watch and worry approach,” you worry even more. But then, of course, if you have a favorable profile, then you’re happier. You’re more pleased.

However, we don’t do anything differently regardless of what those tests show, at least at current state. Compared to a decision that’s already been made about treat or not treat. We do, however, strongly advocate getting that testing at the time of treatment, and sometimes, repeating some of the testing with subsequent treatment, when you require treatment, say, a second time, in some cases. So, very important to have a discussion about these tests and what information you will get from them.

Well, we’ll often see patients who are coming for another opinion about their disease. Perhaps they’ve been recently diagnosed, and they have been advised for observation, so, it’s, of course, natural to ask whether that’s a reasonable approach. And in that context, other testing often comes up in the conversation. Perhaps they had the testing done, the FISH, and the mutational testing, and they wanna know what it means, or actually we see some results that have been obtained and we ask them about it. And there’s very often confusion, or really lack of information about what they mean.

So, we really try to discuss that issue. That issue of testing with each and every patient, whether or not they’ve had it done, really trying to let them know what it means. That way they’re fully informed, and in some cases, people feel very strongly that they would like to have it done, even through they realize that we’re not gonna act on it at that point. So, I think pretty much for all patients, it should be part of the initial discussion.

Again, in terms of genetic testing are these tests that I discussed. It’s important to understand what information they give you so you understand why your physician may be making a distinction between one therapy versus another. It is very, very important to get that testing, if somebody is talking about using chemotherapy, for example, hopefully. That’s quite uncommon. But with our newer agents, we know that they work broadly despite those other features.

Nevertheless, I think it’s important for a patient to at least expect the discussion about these tests. We’re not asking you to go to your physician and ask that they be done in all cases, but really understand perhaps why your physician recommended that they not be done at that particular time.