Tag Archive for: chemoimmunotherapy

Advocate for These CLL Genetic Tests

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Advocate for These CLL Genetic Tests from Patient Empowerment Network on Vimeo.

Genetic testing results can influence a chronic lymphocytic leukemia (CLL) patient’s treatment options and provide a more in-depth understanding into their disease. Dr. Philip Thompson, a CLL specialist, reviews key tests that CLL patients should advocate for.

Dr. Phillip Thompson is an Assistant Professor in Medicine in the Department of Leukemia at The University of Texas MD Anderson Cancer Center. Learn more about this expert here.

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Transcript:

Dr. Philip Thompson:

I would say that I see a lot of patients that have previously seen an oncologist closer to home and then traveled to MD Anderson for a second opinion. And so, I can say that over the last three or four years, there’s definitely a significant change in the awareness of physicians in general about doing genetic testing for CLL.

So, in particular, almost everybody will get a FISH test, which I didn’t always see three or four years ago. And more patients are now having IGHV mutation status analysis done. The thing that I see that is very rarely done, though, is what we call next-generation sequencing, or NGS, that looks for mutations in individual genes, and most importantly, in the TP-53 gene that I mentioned.

So, I would – and the other thing that often isn’t done is what we call a carrier tag, which is a routine analysis of the chromosomes of the CLL cells. And it requires some special techniques for the lab to get it to work in CLL. But that can actually provide additional information compared to just FISH.

So, I would suggest to a patient, particularly if they’re gonna do a bone marrow biopsy on you, which is an invasive procedure, that you really try to get some clarity around what tests are going to be ordered on that beforehand. And if you’ve just been diagnosed and you’ve got early-stage CLL, you can make an argument about how many of these tests are absolutely necessary to start with. Because the biggest utility in these tests is in determining what type of treatment you’re going to have.

If you’re not immediately going to have treatment, they don’t necessarily change what your oncologist is going to do. They’re going to monitor you over time and see if your disease is getting worse or not. But I still think they’re useful to have the – a lot of them are useful, particularly the IGHV mutation status and FISH are useful to have at initial diagnosis. Because they give you a really good idea of what the biology of this disease is – this patient’s disease is like and how quickly they’re likely to progress, and that may change how frequently you monitor the patient.

But anyway, I would say it’s important to ask them what genetic testing you are gonna get. And that you ask – have an understanding of what can be ordered.

 And in particular, if you’re going to get treatment, you must ask for TP-53 sequencing, FISH for 17-P deletion, and IGHV mutation status because those three things are essential to determine the optimal treatment that you have. And you shouldn’t feel shy about asking, are those things going to be done.   

What Do Genetic Tests Reveal About My CLL Treatment Options?

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What Do Genetic Tests Reveal About My CLL Treatment Options? from Patient Empowerment Network on Vimeo.

 
Genetic testing results can influence a chronic lymphocytic leukemia (CLL) patient’s treatment options and provide a more in-depth understanding into their disease. Dr. Phillip Thompson, a CLL specialist, reviews three important testing results that can impact treatment timing and approaches.
 
Dr. Phillip Thompson is an Assistant Professor in Medicine in the Department of Leukemia at The University of Texas MD Anderson Cancer Center. Learn more about this expert here.

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Transcript:

Dr. Philip Thompson:

So, there are three main things we look at before initiating treatment in a patient.

One is what we call the IGHV mutational status of the patient. And this basically splits people into types of CLL. So-called mutated or unmutated. And this is a relatively complex concept. Basically, what happens in normal B-lymphocyte development, so B-lymphocytes are part of your immune system. Their job is they have a probe on the surface of the cell that looks for invading microorganisms. And when they find an invader, this probe binds to the organism. And then the cell actually undergoes, as part of its normal development, a process of mutation so that it makes the best possible antibody to fight that infection. So that’s a normal process that the B-lymphocyte undergoes when fighting infections.

So, CLL can arise from what we call a mature antigen-experienced mutated B-cell, or it can arise from a naive B-cell that has never gone through that process, in which case, it will have an unmutated IGHV. Now, it’s kind of counterintuitive, but the patients with a mutated IGHV generally have better outcomes. That type of CLL is less proliferative, it doesn’t grow as fast, and it also tends to respond better to certain types of treatment. Particularly, it responds better to chemotherapy than patients with unmutated IGHV.

However, the difference between those two is less important if you’re getting some of the newer therapies. Particularly, it seems like if you receive BTK inhibitors, it doesn’t really matter if you have mutated or unmutated IGHV, patients are responding very well. But I like to know whether they have a mutated or unmutated IGHV because it’s helpful for giving the patient an expectation of how their disease is likely to behave biologically.

But also, if they have a mutated they may be a candidate for chemotherapy-based treatment. Whereas if they have unmutated IGHV, I don’t use chemotherapy for those patients.

 

The second thing is a test called FISH. And FISH looks for chromosome abnormalities. So, we have 46 chromosomes, 23 from our mother and 23 from our father. They contain all of our genetic information. And in malignant diseases, you can have major abnormalities in the chromosomes of the cancer cells. Not in the rest of your body, just in the cancer cells. And they happen because of errors that are made when the cells are replicating their chromosomes.                                                                 

So, in CLL, there are four common abnormalities that we look for in a test called FISH, and they tell us a lot about the patient’s prognosis. And there’s one in particular that we look at that has a major impact on our decision making, and that’s a deletion on Chromosome 17.

So, a missing piece of Chromosome 17. And the reason that that’s important is it tends to be an aggressive form of CLL. It also does not respond to chemotherapy, or if it does, the responses are very, very short-lived. So basically, that’s a contrary indication to receiving chemotherapy for your CLL when you should receive another form of therapy if you have a 17-P deletion.

And then, finally, we look at a type of – we look for individual gene mutations in the cells. And that’s different from IGHV mutational status, although the names are kind of similar.

So, in CLL, there are numerous genes that can be affected by mutations that alter the function of the gene. In some cases, it makes the gene non-functional; in some cases, it changes the function in some way that perturbs the normal functioning of the cell and contributes to the malignant transformation of that cell.

So, the most important one, again, relates to a gene called TP-53. So that’s the gene that is deleted if you lose a piece of Chromosome 17. It’s located on the P arm of chromosome 17. If you mutate that gene, it has the same consequences essentially for the cell as if you delete it by deleting a piece of the chromosome. And the two often go together, so you’ll have a 17-P deletion and a mutation of the TP-53 gene on your other Chromosome 17. Because remember, you have two chromosome 17s. So, if you lose both, it may be even worse than only having one. However, it does seem that if you only have a mutation on the TP-53 gene, but you don’t have a deletion on Chromosome 17, that the responses of those patients to chemoimmunotherapy are still really poor.

So, it’s very important to find out, do you have a TP-53 mutation as well as do you have a deletion on Chromosome 17 before you embark on treatment, particularly if that treatment is going to be chemotherapy. So, those are the three things that we look for before    we start any patient on therapy.

Being Empowered: The Benefits of Learning About Your Lung Cancer

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The Benefits of Learning About Your Lung Cancer from Patient Empowerment Network on Vimeo.

As a lung cancer patient, why should you stay informed about research? Expert Dr. Heather Wakelee provides her advice. Find your voice with the Pro-Active Patient Toolkit Resource Guide, available here.

Heather Wakelee, MD is Professor of Medicine in the Division of Oncology at Stanford University. More about this expert here.

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Transcript:

Dr. Wakelee:

So, as a patient living with lung cancer, you have many options today that you wouldn’t have had 5, 10, 15 years ago, which is wonderful.

Because things are changing so quickly, it’s very hard for physicians and other care providers to keep up with all of the latest information. It’s especially hard if you are seeing an oncologist who not only has to keep up with everything that’s happening in lung cancer, but also everything that’s happening in breast cancer, and colon cancer, and melanoma, and so many other diseases.

And so, while everybody does their best to know the latest and greatest in research, and all of the new drug approvals, sometime that’s just possible. So, as a patient, you wanna make sure that you, focused on your particular disease, are up-to-date on what you can possibly know about the best ways to treat your disease, so you can talk to your physician and make sure that he or she also knows about those, and is using that latest information to help you get the best possible care.

There’s also a lot of ongoing clinical trials. And being able to ask about those and know what may or may not make sense for you, is also a reasonable thing to be able to talk with your doctor about.

And sometimes that involves continuing your care with your doctor, but also getting another opinion, particularly at a research center where they might have access to more trials, new drugs, some of which might be better than what’s available, and some of which might not be. But without talking to people about that, you’re not gonna be able to know that.

And that’s why it’s really important to do what you can or your family can do to be educated and know what is going on in the field of lung cancer, so you can get the best possible care.

Diagnosed with Lung Cancer? Why You Should Seek a Second Opinion

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Diagnosed with Lung Cancer? Why You Should Seek a Second Opinion from Patient Empowerment Network on Vimeo.

Should you seek a second opinion? Lung cancer expert Dr. Heather Wakelee explains when to consider seeing a specialist. Looking for more information? Download the Find Your Voice Resource Guide here.

Heather Wakelee, MD is Professor of Medicine in the Division of Oncology at Stanford University. More about this expert here.

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Transcript:

Dr. Wakelee:

So, when facing a new diagnosis of lung cancer, one of the questions that often comes up is whether one should go get a second opinion or see a lung cancer specialist. And that is a question that obviously is gonna vary quite a bit by where a person is, where they’re getting seen, and what they’re facing.

I think a time that it’s really critical would be if someone has a Stage III lung cancer or told it might be Stage III. That’s a really good time to get a second opinion and make sure that the group that is taking care of you has had a multidisciplinary discussion. And when I say multidisciplinary, I mean, a thoracic surgeon, a radiation oncologist, and a medical oncologist have altogether looked at what’s going on with the particular case of that patient to decide up front what’s gonna be the best approach.

Because sometimes surgery is the right first approach. And sometimes it’s not. And sometimes radiation’s important, and sometimes it’s not.

So, it’s really critical to have a big team looking at what’s going on for Stage III. And if you’re in a hospital that really doesn’t see a lot of Stages III lung cancer that might be a good time to think about getting a second opinion outside of where you’re being treated.

I think, otherwise, if someone is newly diagnosed and we know the cancer is early stage where surgery might be involved, it’s good to check in that the surgeons who would be doing your operation are surgeons who know about lung cancer and have done lung cancer surgeries frequently. Sometimes in smaller hospitals there are surgeons who do both heart and lung surgery. And we know that the outcomes are not always quite as good in that setting.

Sometimes there’s no choice, and that’s okay. But if there is an opportunity to talk to a dedicated thoracic surgeon who’s used to doing lung cancer surgery, that’s another good time to get a second opinion. When we’re dealing with a more advanced stage of metastatic lung cancer, if someone is newly diagnosed and their tumor ends up having an unusual gene mutation or translocation.

And the molecular changes in lung cancer are really important to know about. And things like EGFR and ALK and RAS, where most medical oncologists will be familiar. But there’re others, like BRAF and RET and MET, and those can really change treatment outcomes as well, but not everybody who sees lots of different kinds of cancer as an oncologist will know everything there is to know about those.

So, if you have an unusual gene mutation, that’s another good time to get a second opinion with someone who’s a dedicated lung cancer expert. And usually those folks are at the larger academic medical centers, so oftentimes in cities, or affiliated with universities.

Another time is if someone does have a tumor with an EGFR, ALK, or one of the more common mutations, but the main drugs have stopped working, that’s often a time where someone who has specialized just in lung cancer might have some other options.

It’s also something to think through when someone’s newly diagnosed, if they know that their doctor has looked at the immune markers like PD-L1, and looked at the genetic changes in the tumor, and has a clear plan that’s gonna involve chemotherapy, or chemotherapy plus radiation, or chemotherapy plus immune therapy.

Then there might not be something that’s gonna be different in an academic center. But before you start treatment, if you’re still feeling okay, don’t have to start treatment tomorrow, and wanna know maybe that there’re clinical trial options, that’s another time to think about getting a second opinion. And a lot of academic centers will work to get people in very, very quickly if they knew they’ve just been diagnosed and they really need to get started on treatment right away.

Diagnosed with Lung Cancer? An Expert Outlines Key Steps

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Diagnosed with Lung Cancer? An Expert Outlines Key Steps from Patient Empowerment Network on Vimeo.

Dr. Heather Wakelee outlines key steps that patients should consider taking following a lung cancer diagnosis. Find your voice with the Pro-Active Patient Toolkit Resource Guide, available here.

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Transcript:

Dr. Wakelee:

For a patient who is facing a new diagnosis of lung cancer, there are a lot of really important things to keep in mind. But really thinking about top three of them, the first one is that you wanna know what stage the cancer is. And when we talk about stage, we’re talking about how far the caner has spread. So, sometimes a cancer is found at Stage I when it’s still just a mass, a tumor in the lung.

Stage II means that it’s spread into some of the lymph nodes that are still in the lung. And for Stage I and II, for most people, we know that that means surgery is the treatment option. The next stage is Stage III, and that means that the cancer has started to spread into these lymph nodes.

And lymph nodes are just normal part of the body, but it’s a place cancer often will go. And if it goes into the lymph nodes in the center of the chest, called the mediastinum, then it becomes Stage III. And that changes the treatment. It’s usually more complicated. You wouldn’t normally just have surgery. There’s still sometimes surgery, and sometimes radiation, and almost always some sort of treatment like chemotherapy.

But it’s very complex. And usually we recommend that if you know it’s Stage III that you have a team that’s surgeons and radiation oncologists and medical oncologists to think about it. And then Stage IV means that’s it’s spread. So, knowing – meaning that it’s spread in a way where treatments are gonna involve chemotherapy or targeted treatment or immune therapy, and sometimes radiation, but not normally surgery.

And so, because it’s such a big difference in how things are treated based on stage, that’s the most important question to talk to your treating team about. The next most important question, assuming that it’s metastatic or Stage IV because that’s the most common way that we find lung cancer.

If it is metastatic or Stage IV then you wanna find out well, are there any markers, any tumor markers or cancer genetic changes, that are gonna help pick the treatment. And when I say that, I’m talking about gene changes in specific genes. The ones we think about a lot is something called EGFR, or epidermal growth factor receptor; or ALK, which is A-L-K; KRAS. There’s a whole list of them. But the most important are EGFR, ALK, and ROS, and BRAF.

And why that’s so critical is that if you have metastatic cancer and the tumor has one of those mutations then instead of chemotherapy, the best treatments are gonna be pill drugs, so basically, medications that you take my mouth. And we know that when the tumor has one of those specific mutations, the pill drugs are gonna be more likely to shrink the tumor and have that last longer. So, that’s why it’s so important to know about that. And then the other thing that we look at a lot is something called PD-L1, and that helps us determine about the immune therapy.

So, there’s been a lot on the news about this new class of treatments called immune therapy. And those can work for a lot of different people with a lot of different kinds of cancers. But they don’t always work. And this PD-L1 test can help us know a little bit more about when it might be the best choice, or when it might be something we can add to chemotherapy. And so, getting that information back is important, too.

And I’m gonna add a little bit extra to that. A lot of times that PD-L1 result will come back faster than the gene changes of the tumor, the molecular changes to the tumor. And it’s important to have the whole picture, so you wanna know not just what stage, not just the PD-L1, but also if there are any gene changes in the tumor, so that the best treatment choice can be talked about with the care team.