How Molecular Testing Has Transformed AML Treatment Options

How Molecular Testing Has Transformed AML Treatment Options from Patient Empowerment Network on Vimeo.

How has molecular testing impacted approaches to acute myeloid leukemia (AML) therapy? Dr. David Sallman explains how molecular testing has transformed AML care, including a discussion of risk assessment and the role of next-generation sequencing (NGS) in tailoring care for each patient. 

Dr. David Sallman is an Assistant Member in the Department of Malignant Hematology at Moffitt Cancer Center where he specializes in myelodysplastic syndromes (MDS), acute myeloid leukemia (AML) and myeloproliferative neoplasms (MPN). Learn more about Dr. Sallman, here.

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Transcript:

Katherine:

How has molecular testing changed the landscape of therapy for AML?

Dr. Sallman:

Yeah, it’s really transformed it, and it’s really a constantly evolving paradigm. We have updated classifications; most people utilizing the ELN system.

So, based on both cytogenetic and molecular factors, you can ultimately go into good risk, intermediate risk, adverse risk. In general, for fit patients for good risk, we focus on curative intent, ideally with chemotherapy alone. For intermediate and adverse, typically we’re incorporating allogeneic stem cell transplant. So, that’s one of the main things that really guides treatment really from the beginning and throughout.

Then, I think really where it’s evolving is personalized therapy. So, it’s really not a one-size-fits-all treatment paradigm, it’s you have mutation A, B, you’re this age, this fitness, and we put all those things together to ideally come up with the best treatment plan for the patient.

Katherine:

Is molecular testing standard following an AML diagnosis or is this something that patients should ask for?

Dr. Sallman:

It definitely should be standard and I think the challenge is when you say the word “molecular,” it means lots of things to different people. I think in the community, as targeted medications were first approved, so this was with FLT3 inhibitors, subsequently IDH1 and IDH2 inhibitors, I think people are realizing yes, we have to send these sequencing panels, but there’s a potpourri of choices from a lot of different commercial vendors.

Really the key and one of the main messages we try to get across is you really have to assess for both FLT3 as well as really a comprehensive next-gen sequencing panel in order to cover all of the relevant genes at diagnosis and likely at other time points such as relapsed or refractory disease.

So, there’s no question, it’s standard, although unfortunately, it’s still not uncommon where the comprehensive panels are not sent and you’re left with somewhat not a complete picture for your patients. Since we’re personalizing everything, it’s really quite critical to have these data.

Katherine:

Yeah. How does inhibitor therapy work to treat AML?

Dr. Sallman:

So, you have a gene that turns on and turns off as we go, but with the mutation, it’s basically turned on all the time. Then, you can have targeted pills that basically turn it off. Most commonly this is done, there’s the active

or energy site for these different genes, and so these therapies can really specifically block that. I wouldn’t say that’s the only mechanism. There are IDH1 and IDH2 inhibitors and they’re very specific for those mutations. Each mutation may have a little bit different end biology. In general, you have mutation A, and we’re going to turn it off with drug that inhibits A.

Advocating for Key AML Testing: Advice From an Expert

Advocating for Key AML Testing: Advice From an Expert from Patient Empowerment Network on Vimeo.

Dr. Hetty Carraway, an AML specialist at Cleveland Clinic, shares advice on advocating for yourself when diagnosed with AML, underscoring the importance of asking questions, and including your caregiver as part of the conversation.

Dr. Hetty Carraway is Director of the Leukemia Program at Cleveland Clinic. Dr. Carraway cares for patients with acute leukemia and bone marrow failure states. Learn more about Dr. Carraway, here.

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Transcript:

Katherine:

What advice do you have for patients when it comes to asking for appropriate testing and speaking up in their own care?

Dr. Carraway:            

This is so important. I think patients are leery to stir the pot or be difficult. I think coming from a place of inquiry, teach me about this, that, or the other thing, help me understand this, that, or the other thing – I would like you to show me why this decision or talk with me about why this decision versus another decision might be better for me compared to somebody else.

I can’t underscore the importance of advocating for yourself and asking questions about why am I getting this drug? What are the side effects to this drug? What is my prognosis? What is different about my case versus somebody else’s situation? How do I best prepare myself in getting ready for the therapy that I’m about to go through?

Those are all important questions that patients should ask. They should certainly have people, if possible in their family be advocates for them. I welcome that, and I think that that’s a really important part of going through this type of therapy for any patient. Your physician should welcome having your involvement in that. Don’t be shy about that. It’s your health, and any investment in that the most important people in that is inclusive of you and your caregivers. They should be a welcome part of the team.

Understanding AML Induction and Consolidation Therapy

Understanding AML Induction and Consolidation Therapy from Patient Empowerment Network on Vimeo.

Dr. Hetty Carraway, an AML specialist at Cleveland Clinic, provides an explanation of the role of induction and consolidation therapy in AML patients.

Dr. Hetty Carraway is Director of the Leukemia Program at Cleveland Clinic. Dr. Carraway cares for patients with acute leukemia and bone marrow failure states. Learn more about Dr. Carraway, here.

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Transcript:

Katherine:

Would you define induction therapy and consolidation therapy and tell us what the differences are?

Dr. Carraway:            

For most patients that are diagnosed with an acute myeloid leukemia, over the last 30 to 40 years we’ve used an intensive chemotherapy regimen that we call induction. Induction means that we’re trying to get the leukemia into remission with an intensive chemotherapy regimen. Classically, that has been two agents; one, a cytarabine based regimen along with an anthracycline, either idarubicin, danorubicin, or some anthracycline that’s similar.

Now, the cytarabine based therapy is a continuous infusion over seven days. The anthracycline is given over three days as an intravenous IV push, and so that’s why it’s kind of been nicknamed seven and three – seven days of cytarabine and three days of another anthracycline.

Now, that has constituted the induction intensive regimen in the hospital with the idea that that leukemia gets under control and goes away. More recently for patients, they can receive therapy that is not this inpatient, in-hospital, induction chemotherapy but rather use oral therapy combining with venetoclax, which is a Bcl-2 inhibitor, along with azacitidine, which is either IV or subcutaneous given to patients over seven days. The oral, venetoclax is every day.

That type of induction can also be given and is now an outpatient regimen and more often offered to patients that are older, over the age of 75.

That, too can be considered induction with the idea that once a patient is diagnosed with leukemia this regimen is started, and after one month or even two months on venetoclax plus azacitidine patients’ leukemia can get into what we call remission, where the blast percentages are less than 5 percent. Then, normal hematopoiesis of platelets being greater than 100,000 and a neutrophil count greater than 500 or 1,000, and the patient is then transfusion-independent.

In general, induction chemotherapy is that first round of chemotherapy that’s trying to get the leukemia under control.

Consolidation chemotherapy is when you use subsequent cycles of chemotherapy to keep the leukemia under control because we know that if we don’t continue to give some continuation of therapy that the small, little seeds of leukemia will re-emerge and leukemia will relapse.

Key AML Testing for Better Care: Understanding Prognosis and Treatment Choices

Key AML Testing for Better Care: Understanding Prognosis and Treatment Choices from Patient Empowerment Network on Vimeo.

After an acute myeloid leukemia (AML) diagnosis, additional tests must follow to determine prognosis and treatment options. Dr. Pinkal Desai explains key tests that aid in choosing optimal care for each patient. 

Dr. Pinkal Desai is Assistant Professor of Medicine at Weill Cornell Medical College and a hematologist specializing in acute myeloid leukemia (AML) at Weill Cornell Medicine. Learn more about Dr. Desai, here.

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Transcript:

Katherine:      

Other than a complete blood count, what additional testing should take place following an AML diagnosis?

Dr. Desai:                

So, a blood count or CBC is just a hint that there might be AML. It’s certainly not diagnostic.

But when you see that there are some abnormalities in blood count, and there might be the presence of these immature cells or blasts in circulation, there is suspicion that this is acute myeloid leukemia. The diagnosis, the gold standard for diagnosis, is a bone marrow biopsy, which is a procedure that can be done out-patient or in the hospital, depending on where the patient is. It takes about 15 minutes, where we take a sample out of the hip bone and look at the cells. This is where bone marrow is being made, so you’re going to exactly where the problem lies, and seeing if the blast count is increased.

So, the diagnosis of AML is established when the blast count is over 20 percent in the bone marrows. And normally, it needs to be less than 5 percent.

And if it’s over 20 percent, that’s the diagnosis of AML. Whether it’s over 20 percent in the bone marrow or in the peripheral blood.

It doesn’t matter, one way or the other. This is a diagnosis of AML, but you do need a bone marrow biopsy to confirm diagnosis of AML.

Katherine:                  

What about genetic or molecular testing? Is that done?

Dr. Desai:                   

AML diagnosis is just one part or the first step of saying somebody has leukemia. There is a slew of other tests that are important, and we generally consider, within the genetic tests, we generally consider two kinds of testing. One is the cytogenetics, or the karyotype analysis, which looks at the chromosomes in our bodies.

So, leukemia can be associated with big chromosomal changes, and that’s important to recognize. And the second one is the molecular testing, and we’ll go over both of them.

The chromosomes, or the karyotypic analysis, the vast majority of leukemia patients have a normal chromosome type, but there are certain recurrent abnormalities in chromosomes that we see in leukemia, and that’s important to know for a variety of reasons: treatment decisions, prognostication.

And the second part of it, the molecular, these are actually genetic routine analysis, and this is not somebody – it doesn’t mean, when we say genetic testing, it’s not the patient’s own normal genetic type. So, we’re not looking for what they have inherited. Most of leukemia is actually a random event, and it’s not inherited. We’re talking about genetic damage that the leukemia cells have within themselves.

It gives us the signature of the leukemia, and it helps us understand what genetic abnormalities are present in the leukemia. There are several panels, 50 to 100 genes, but there’s usually recurrent genetic damage that leukemia cells have.

And you want to know that, because again, like karyotype, this is important in treatment decisions, and also in the prognostication and prediction in the future.

Being Pro-Active in Your Care: Key AML Testing to Advocate For

Being Pro-Active in Your Care: Key AML Testing to Advocate For from Patient Empowerment Network on Vimeo.

AML specialist Dr. Naval Daver discusses essential testing for AML patients and suggests key questions that patients should ask their doctor during clinic visits. 

Dr. Naval Daver is an Associate Professor in the Department of Leukemia at The University of Texas MD Anderson Cancer Center. More about Dr. Daver here.

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Transcript:

Katherine:                   

Well, let’s talk about patient advocacy. What are some of the key tests that patients should ask for after they’ve been diagnosed?

Dr. Daver:                    

The key things that patients should want to get the information is: 1) Knowing the bone marrow blasts.

I mean, that’s really basic. Just knowing what leukemia it is. What are the blast percentage? 2) Is, I think, chromosome analysis is very critical to get that information and to make sure we’re not missing acute promyelocytic leukemia, or core-binding factor leukemia, which have different treatments and very favorable outcomes, and would never, in general, never require a allogenic transplant. At least in majority of cases.

And 3), which is the one where we still see that it may sometimes not be available or be missed, is molecular testing.

I think it’s very critical to request molecular testing. And among molecular testing, especially FLT3, maybe IDH1 and IDH2, and TP53.

So, I think these are the most important data sets. Cytogenetics, key molecular mutations, bone marrow blasts, and confirmation of the type of leukemia before we embark on any treatment.

Katherine:                   

How can patients feel confident, do you think, in speaking up, and becoming a partner in their care?

Dr. Daver:                    

When you go for the clinic visits, just to have a list of your questions written down and having them prepared and prioritizing them. I always say, have your top-three questions ready.

We’ll try to do the others. But we’ll do the top three. And I think, when you have a new diagnosis of AML, the top three should be: what is the type of leukemia I have, and what are the bone marrow blasts? Number one. Do we have any chromosome and molecular information? Number two. And number three: Are there any specific treatments for my specific AML based on that chromosome molecular information? Or do we need additional information, and can we wait for that safely? I think these are the three very reasonable questions which, I think again, most leukemia experts will automatically be discussing this.

But, I think, for a patient, I think that’s important information to make sure they get before proceeding. If there’s time, the fourth question will be: Is – Are – Do we have a choice between high intensity, low intensity? And if we do, what are the pros and cons? In some cases, there may be a choice. In some cases, it may very clear that high intensity is the way to go, or low intensity is the way to go. But still, I think it’s often good to discuss that with your physician.

Should AML Molecular Tests Be Repeated?

Should AML Molecular Tests Be Repeated? from Patient Empowerment Network on Vimeo.

Dr. Naval Daver, an AML specialist, reviews genetic testing, how the results affect AML treatment decisions, and when retesting may be appropriate for patients. 

Dr. Naval Daver is an Associate Professor in the Department of Leukemia at The University of Texas MD Anderson Cancer Center. More about Dr. Daver here.

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Transcript:

Katherine:                   

What is genetic testing in AML?

Dr. Daver:                    

So, genetic testing in AML is basically what we call molecular profiling. 

So, it’s looking at the presence of particular molecular mutations. For example, at MD Anderson, we do what we call 81 gene panel. So, this looks at 81 different genes for mutations in the bone marrow of newly diagnosed acute myeloid leukemia. Now, how did we come up with 81 genes? So, this was actually done by literature analysis and review of previously published preclinical and translational studies, and we basically selected all mutations that had been shown to occur in two percent or more of thousands of AML patients. And we found 81 such mutations. So, that any mutation that had a two percent or higher frequency in known published or public databases was included.

And that’s how we’re able to analyze for the mutation.

So, it’s still possible that there may be some very rare mutations that are present, and those may be important for research. But they don’t change our treatment decision today. And so that’s what we call genetic profiling. Some people call it molecular mutation analysis. Some people call it next-generation sequencing.

But basically, this is looking for mutations in particular genes that are known to occur in AML. Now of those 81 genes; and some people do a 100 gene panel, some do 50, so those are variables; but among those, there are four or five that are most important: the FLT3, as we discussed, where we can use FLT3 inhibitors; IDH1 and two, because we can use IDH1 and IDH2 inhibitors; TP53 is a very important mutation because it has very high risk and adverse prognosis.

And there are now new drugs coming that may be very effective in TP53. So, we are checking for that. Those drugs are in trials, but the trials are showing very promising data and could be a great option if a patient is known to have a TP53.

Those drugs are Magrolimab, CD47 antibody, and APR-246. So, these are the four most important therapeutic mutations.

There are also some mutations that have prognostic value even though we cannot target them. These include mutations like RUNX1, DNMP3A, ASXL1.

One does not need to know the list. But the point is that these mutations may help determine whether a patient falls into intermediate-risk group or high-risk group, which then impacts the decision as to whether we need a stem cell transplant or not. So, it really is important to get this molecular profiling. It’s actually available in the United States commercially. And any clinic or hospital is able to actually order it. And insurance will cover it in 100 percent of the cases.

Katherine:                   

When should patients be tested, and how is testing done?

Dr. Daver:                   

Yeah. So, the basic testing for any suspected new acute leukemia is to get a bone marrow biopsy. That has to be done. That should be done very quickly because all of the information that will be generated to make the treatment decision will come off the bone marrow biopsy.

Katherine:                   

What about retesting, Dr. Daver? Is that necessary?

Dr. Daver:                    

Yeah. So, retesting is necessary in – not for everything, I think.

But let’s say someone had treatment induction and relapsed a year later. So, we would definitely retest: 1) to confirm with the bone marrow’s relapsed AML, get the blast percentage because we need that before restarting treatment, so we know what was the starting point to know how the patients doing after treatment if he’s responding. 2) Molecular testing, for sure, should be repeated. We usually repeat the molecular testing such as FLT3, IDH1, IDH2, because there are drugs that can target these mutations in a relapse.

And more interestingly, we actually have published, and other groups have also published, that there are some patients who may not have those mutations at baseline but may actually acquire or have detectible mutations at relapse. So, if you don’t have FLT3 at baseline, your physician may assume that the FLT3 is not there, not do mutational testing. But in fact, that may not be true. So, it is important to retest about 15 percent, one five percent, in our publications can acquire a detectible FLT3. Which is critical because this could then change your treatment.

IDH1 and two are rarely lost or acquired, but we have seen a few five percent or so cases of that. So, it’s still better to check for that. And then TP53 we check for because now we have these new research clinical trials, phase one, two, that are showing some very encouraging activity in TP53. So, these are probably the main things to retest for.

There’s also some new clinical data emerging with a new drug called menin inhibitor that targets a particular chromosome abnormality, MLL rearrangement.

This is again in a phase one setting, so the data may not be widely disseminated. But we’re seeing some very encouraging activity with menin inhibitors. 

And so, we are 100 percent checking for the MLL rearrangement chromosome, which can be done on FISH, or routine chromosome.

And if that is there then trying to get on one of the menin inhibitor trials, they’re opening about 25, 30 centers with different menin inhibitors, would be a very, very good option because we think these will be the next molecular or chromosome-targeted breakthrough in AML.

Genetic Mutations That Affect AML Prognosis and Treatment

Genetic Mutations That Affect AML Prognosis and Treatment from Patient Empowerment Network on Vimeo.

Dr. Naval Daver reviews the common mutations associated with acute myeloid leukemia (AML) and how the identification of these mutations affect prognosis. 

Dr. Naval Daver is an Associate Professor in the Department of Leukemia at The University of Texas MD Anderson Cancer Center. More about Dr. Daver here.

Download Program Resource Guide

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Confused About AML Genetic Testing and Treatment? What You Need to Know

Transcript:

Katherine:

What are common mutations in AML?

Dr. Daver:                    

Yeah. So, the most common mutation in AML is F-L-T-3, FLT3 mutation. This is both prognostically important mutation, presence of an FLT3 in a newly diagnosed AML, has been shown in many large publications by the German Cooperative Group, British Cooperative Group, our group, and others, is associated with an inferior survival.

Also, now, on top of that, it is also a therapeutically important mutation in addition to having negative prognostic value because the addition of FLT3 inhibitors seems to dilute, to a large extent, the negative prognostic value.

So, we believe that if we can identify FLT3 mutations at FLT3 inhibitors, we can definitely improve the outcome of those patients.

The second most common is what we call NPM1 mutation, and that tends to occur with FLT3. About 55 percent of patients with an FLT3 mutation will have a coopering NPM1.

NPM1 is very interesting. With NPM1 mutation is present on it’s own without a FLT3, it’s actually associated with favorable outcome. It’s a favorable prognostic marker. However, if NPM1 is present with a FLT3, and especially if the FLT3 has a high quantity, high allelic load, then the NPM1 loses its favorable impact. So, now we’re kind of moving beyond just; do you have one mutation or not, which is what we thought 10 years ago, to; well, yes, you have this mutation, but what about the core-occurring mutation and even beyond. What about the burden, or what we call the variant allele frequency of that mutation?

So, for good or bad and I think it’s good in the end because it’s going to improve the patient outcomes, that we are getting more, more in-depth and there’s no longer quote, unquote, AML.

So, there’s a lot more granularity and analysis that is required even before starting treatment. And this is the thing that, in the community, we’re educating the doctors a lot, is that it’s okay to wait four to six days, especially if the patient does not have a very proliferative leukemia, to get the important bloodwork to identify the appropriate molecular and chromosome group.

So, that we can select the right treatment which will improve outcome rather than just rushing into standard treatment and missing a particular molecular chromosome group.

Confused About AML Genetic Testing and Treatment? What You Need to Know

Confused About AML Genetic Testing and Treatment? What You Need to Know. from Patient Empowerment Network on Vimeo.

What is AML genetic testing? Dr. Alice Mims explains genetic testing in AML, including the necessity of testing, the effect on treatment decisions, and why patients should be retested over the course of their disease.
 
Dr. Alice Mims is a hematologist specializing in acute and chronic myeloid conditions. She serves as the Acute Leukemia Clinical Research Director at The Ohio State University Comprehensive Cancer Center – James.

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AML Genetic Testing Explained

Transcript:

Dr. Mims:

So, in regards to older treatments and being effective, seven plus three, which is an intensive chemotherapy, is still the standard of care treatment for patients with favorable risk AML, if they’re candidates for intensive treatments because it is potentially curative. And 7 + 3 is also the backbone for newly diagnosis for patients with FLT3 mutations, we add a FLT3 inhibitor called Midostaurin onto that, as it’s shows to improve overall survival with the addition of that compared to just the chemotherapy alone.  

And also, hypomethylating agents, which are a less intensive treatment, were the standard of care for patients who couldn’t tolerate intensive chemotherapy.  

And now we’re seeing the addition of other agents being added to this, like the BCL2 inhibitor of Venetoclax 

And recent data in phase 3 trial comparing the hypomethylating agent alone versus adding that agent did show an overall survival advantage. And so, these are definitely evolving, and I think as we are learning more about targeted therapies and how they can best be used in combination with chemotherapy other than single. Agent. But you give two targeted therapies together and having even better outcomes. We hope we continue to make improvements from where we were even just five years ago and do a better job for.