AML expert Dr. Omer Jamy discusses his approach when considering treatment for patients with relapsed or refractory AML, including transplant eligibility, molecular markers, and whether clinical trials may be an appropriate option.
Dr. Omer Jamy is a Leukemia and Bone Marrow Transplant Physician and Assistant Professor at the University of Alabama at Birmingham. Learn more about Dr. Omer Jamy.
Dr. Jamy, are there any recent advances that may affect the care of patients with relapsed or refractory AML?
Dr. Omer Jamy:
Yeah, that’s a good question. So, patients with relapse refractory AML, of course, carry a poor prognosis. That means that chemotherapy was working and has stopped working or chemotherapy didn’t work from the get-go, right?
So, in my practice I try to divide patients into two different buckets. One is that I need to get them into remission, and they’re fit for a transplant, so I take them to transplant.
So, then my treatment approach is a little different for those patients. As opposed to someone who’s elderly or too frail, that they may go into remission, but they may not be able to proceed to stem cell transplantation after that.
So, what happened in the relapsed/refractory setting also depends on what the patient received in the upfront setting. Ideally, I would recommend a clinical trial enrollment for patients with relapse refractory AML if they have access to it. At the time of relapsed/refractory AML, it is very important to again profile the leukemia to see if there are any mutations that were present at diagnosis or if there are any new mutations for which there may be targeted therapy. Some of those mutations for which we have targeted therapy include FLT3-ITD for which there is a drug called gilteritnib (Xospata), which is FDA-approved in the relapsed/refractory setting.
We spoke about IDH 1 which is ivosidenib, IDH 2 which is enasidenib (Idhifa) is also approved for patients with relapsed/refractory AML. And then more recently the FDA approved another IDH1 compound called olutasidenib (Rezlidhia) which is also for patients with relapse refractory acute myeloid leukemia with an IDH1 mutation. I think these are target therapies which have shown to get people into a second remission and beyond. And these have been approved in the last few years. And I think it is very important to basically test whether the person harbors these mutations so that we can target them accordingly.
For patients who don’t have any mutations we would generally, outside of a clinical trial, probably use the combination of some of the approved agents that may be venetoclax (Venclexta) with azacitidine (Vidaza) or decitabine (Dacogen). Patients who may have received this venetoclax or a hypomethylating agents frontline and may still be eligible for intensive chemotherapy.
You could offer them intensive chemotherapy in the relapsed/refractory setting, but I would say that at this point being at a center where there’s opportunities to enroll in a clinical trial would be really helpful as well.
https://powerfulpatients.org/wp-content/uploads/Advances-in-the-Treatment-of-Relapsed_Refractory-Acute-Myeloid-Leukemia-AML.png600600Kara Rayburnhttps://powerfulpatients.org/wp-content/uploads/New-Logo-300x126.pngKara Rayburn2023-06-30 12:09:272023-06-30 12:09:27Advances in the Treatment of Relapsed/Refractory Acute Myeloid Leukemia (AML)
What factors are considered when choosing an AML treatment approach? Dr. Ann-Kathrin Eisfeld explains how shared decision-making comes into play when deciding on a therapy and reviews the options available to treat AML.
Dr. Ann-Kathrin Eisfeld is Director of the Clara D. Bloomfield Center for Leukemia Outcomes Research at The Ohio State University and a member of the Leukemia Research Program at the OSUCCC – James. Learn more about Dr. Eisfeld.
With all the new tools that are available, what other factors do you consider when working with an AML patient to choose a treatment approach for them?
Dr. Eisfeld:
The most important aspects are what we call – and this is – I’m glad that you bring this question up because I feel you have to think of – and that was what we’ve been talking about – called disease-associated factors. This is everything in the leukemic cell. They – how does a leukemia looks like? How does the blast look like? What changes are there?
That’s the biggest part of what I would call patient-associated factors: the patient age, the patient performance status, actually the patient. In every – because I think, sometimes, we forget about it. But we just look at all the molecular testing.
But even if – for example, there would be a patient with a very good risk leukemia, where I think, “Oh, this leukemia should respond very well to an intensive chemotherapy.”
If the patient cannot tolerate chemotherapy or – and I see it more often than I would wish for patients who are young who have a great performance status, but they just cannot – they – their family reasons. Small children sometimes – they just cannot be away for so long. This all comes into consideration. So, it’s really important because we all work together as a team. And the right treatment for the leukemia might not be the right treatment for the patient.
And for most cases, however, I think, it will only work if one stands with a whole heart with both physicians, and patients, and family. Because it’s a long journey behind the care that’s being given. And so, this is a joint decision-making, and there are different options that can be done. Of course, I would not advise something where I would think there are no chances of success.
And so, this has to be an open discussion. But this is – it’s very often a very tough treatment to communicate that and see what are the goals of each patient? That will be most important for treatment and decision-making.
Katherine Banwell:
What types of AML treatment classes are currently available?
Dr. Eisfeld:
This is a very good question. The most classic treatment class is intensive chemotherapy. This is just because people might have heard the names. It is called 3 + 7 or 7 + 3, which refers to one weeklong impatient chemotherapy treatment. But you get one chemotherapy for seven days. And the first three days, you get a second treatment as well.
That’s why it’s called three in seven in here, but it’s a total of seven days. So, we have intensive chemotherapy. And there are different flavors of it. But this is usually the backbone. The second class is what I would call a targeted inhibitor. And here we can look at two different aspects. We have targeted inhibitors for a specific DNA mutation that are found. And specifically, one are called IDH or FLT3 mutations.
And these are pill forms that I usually by now combined with a third drop class which is called hypomethylating agents. And I will go through in a moment.
But these are pills that really only work in patients and carry that genetic change. They have very, very low toxicity and very high chances of working. So, that’s why this testing is so important to see if one is one of the 15 percent of AML patients carrying an IDH mutation – 15 percent isn’t low. And a similar rate carries a FLT3 mutation.
And then there is also going to target inhibitors. That is targeted because it is against what I would call a pathway. The gene that is commonly activated in acute leukemia – and this is called BCL-2 and the drug is called venetoclax (Venclexta).
This is now stormed through the acute myeloid leukemia world in just a few years ago and has been approved as a front-line treatment option for several patients, especially for those who are older. And we know that even patients who respond usually favorably to chemotherapy, some of those also respond well to venetoclax the Bcl-2 inhibitor. The benefit is that this treatment in many cases if it works, can be done as an outpatient in here and has very often lower complications.
It is actually has so good results that I – sometimes it seems too easy. So, we actually advise patients to still try to get – the first time they get the treatment, do it at a center where it’s done more commonly. Because it sometimes – don’t underestimated the power of a pill. And it’s still a very, very powerful drug. So, doing it in a controlled setting – because if cancer cells break down, they break down and can create all sorts of trouble.
So, that is really something – for several leukemias, it can be concerning. And again, now the treatment group would be called hypomethylating agents. The names are azacitidine (Vidaza) and decitabine (Dacogen). And they act in a very different way. They try to change the epigenetics like methylation patterns. And often, if it is an untargeted way of the tumor cells and they can be used alone.
Or very often by now in combination with the targeted inhibitors that I was just mentioning. These are infusions that can be done either over five, seven, or 10 days depending on the combination treatment. And for patients, as I mentioned before, that don’t respond well to many other options to those patients with a complex karyotype. This is, for example, a scenario where patients can just receive this as their only therapy.
Katherine Banwell:
What about stem cell transplant? You didn’t mention that.
Dr. Eisfeld:
Yes. That would be the next one. So, stem cell transplant always comes as an option, which I would call as a maintenance therapy. Again, two aspects. We have two different end goals.
First is get rid of some leukemia. Second is to make sure it stays away. And as soon as the leukemia is in complete remission, depending on the performance status – the agent. Again, in multiple different things. It’s not an easy decision.
At that time, there has to be a conversation. And that always involves a leukemia physician and a transplant physician very often. These are different providers that goes for the risks and benefits. Where the question is if I only continue to do chemotherapy – because it’s never only once. You would always have to repeat your chemotherapy. What is the likelihood that the leukemia comes back, and does it outweigh the risks that comes with the stem cell or bone marrow transplant that comes in here. But for many leukemias, especially for young patients and for patients with higher risks, this is the only chance of a cure. That is the most curative and only curative attempt for many leukemia attempts.
Katherine Banwell:
Where do clinical trials fit into the treatment plan?
Dr. Eisfeld:
That is the absolute backbone. We always have to think about that.
Everything – all the treatment options that I mentioned – have been clinical trials, just very, very short time – very few years ago. So, every patient that comes to a leukemia or a cancer center, clinical trials will be discussed if they’re available. Because they will provide a special opportunity to have even more fine-tuned treatments – either newer agents. And I think what is very important to mention is that all clinical trials that are available would give the option of the best standard of care.
And then the hope that a patient wouldn’t be getting any of the best standard of care options that are approved. The hope is that the new agent or added agent in many cases would even do better.
It’s also important that there’s a lot of additional monitoring during the trial. I think it can be seen in two ways as two parts of a coin. In one way, it may be additional visits to the hospital or additional blood draws that are necessary to be sure that the medications are safe, and that researchers and conditions can learn about it. But on the other hand, it also gives you this extra bit of being looked after and really getting checked in and out, making sure that all organs are functioning that everything is just going fine. And many patients appreciate this a lot. And they have this pair of extra eyes on them all the time.
Katherine Banwell:
Dr. Eisfeld,what therapies are available for AML patients who relapse or don’t respond to initial therapy? And is this treatment approach different from those who are newly diagnosed?
Dr. Eisfeld:
Most of the time, the treatments available at relapse are the same available at the first diagnosis. Just because we know now that, for example, if you have a molecular marker that, for example, is available, it would act with also relatively high chance of relapse upset. However, at relapse, the most important thing I personally would do is consider a clinical trial even stronger than in the first mindset.
Because it means that the leukemia outsmarted current treatments very often. So, usually what we would be doing is see if there is a targeted inhibitor or a cell mutation FLT3 or IDH, which I would personally always prefer to go in MLL rearrangement now for the new menin inhibitors where one would go with the same option as if it would have been their diagnosis. But if not to really consider clinical trials is a strong urge.
Katherine Banwell:
Should patients or should relapsed patients undergo genetic testing again? Is it necessary?
Dr. Eisfeld:
Yes. At any time. Yes. Because we know that the leukemia changes. And you just can think about it in the way is that the cells that are surviving treatment, they’ve become smart. There was so much poison. There was so much treatment put on them.
And the ones that survive might have a quiet additional chromosome change as additional gene changes. And even if a genetic change has not been present at time of diagnosis, the reason the cell has survived might have been that it has now one of these changes that came up on a later time during treatment or while the cell is hiding somewhere to come back.
TP53-mutated acute myeloid leukemia (AML) treatment has some challenges. Dr. Naval Daver from the University of Texas MD Anderson Cancer Center shares his perspective. Learn about promising treatments on the horizon for this AML subgroup.
[ACT]IVATION TIP from Dr. Daver: “The TP53 mutation remains the most difficult subset of acute myeloid leukemia, there is hope on the horizon with new treatments such as CD47 antibodies and targeted therapies like APR that are being looked at, and also a strong consideration for allogeneic transplant in TP53, because this seems to be the only modality associated with a good chance of cure after achieving remission with one of the frontline therapies.”
Dr. Daver, what have we learned about TP53-mutated AML? And what is the takeaway for these patients?
Dr. Naval Daver:
TP53-mutated AML remains the most difficult molecular subset of all acute myeloid leukemia. Patients who have this mutation, unfortunately, do not respond well to any of the established standard care therapies, including intensive chemotherapy, the HMA alone, such as azacitidine (Onureg or Vidaza), decitabine (Dacogen) alone, or even HMA venetoclax (Venclexta) with all of these, we do see responses, especially with HMA venetoclax or intensive chemotherapy, we can see 15 to 55 percent remission rate, but the remission, very short lived, early relapses and the median overall survival across all of these currently available standards of cares are between six to 10 months.
So there has been an intense effort in the last six, seven years to develop TP53-directed therapies or therapies that will work regardless of TP53 mutation, and there are two drugs this time that are very promising and being evaluated as ongoing Phase II and Phase III studies.
One of them is an immunotherapy drug called magrolimab which seems to have very similar activity and probability with good response rates in TP53-mutated AML. This has been completed in a single arm phase 1B study in front line TP53-mutated AML where we saw close to 50 percent CR, CRI complete permission rates. And median survival was above 11 months in older unfit TP53, which is better than any survival we have seen in the past in this population.
The other study was with the oral care targeted therapy towards TP53, called APR, and this therapy was specifically designed to target the TP53 mutation, and this is being evaluated in the frontline setting in combination with a society in venetoclax. We hope that these regimens are these novel therapies, one or both of them will be able to at least incrementally improve their current outcomes in TP53.
The other area where we have really been doing a lot of research, and I think the data is suggesting, is that allogeneic transplant may work for separate, and we are routinely considering transplant in these patients in the frontline setting, once they are able to achieve remission.
My activation tip is the TP53 mutation remains the most difficult subset of acute myeloid leukemia, there is hope on the horizon with new treatments such as CD47 antibodies and targeted therapies like APR that are being looked at, and also a strong consideration for allogeneic transplant in TP53, because this seems to be the only modality associated with a good chance of cure after achieving remission with one of the frontline therapies.
https://powerfulpatients.org/wp-content/uploads/Challenges-in-Treating-TP53-Mutated-AML-Hope-on-the-Horizon.png600600Kara Rayburnhttps://powerfulpatients.org/wp-content/uploads/New-Logo-300x126.pngKara Rayburn2023-02-01 16:06:552023-04-20 10:50:52Challenges in Treating TP53-Mutated AML, Hope on the Horizon
What do acute myeloid leukemia (AML) patients need to know about triplet therapy? Dr. Naval Daver from the University of Texas MD Anderson Cancer Center shares his perspective. Learn about the meaning, progress, and outlook for triplet therapy.
[ACT]IVATION TIP from Dr. Daver: “Some of the early data with the FLT3 inhibitor as well as the CD47 antibody triplets are showing very, very promising activity and are now moving into larger multi-center and randomized studies.”
Dr. Daver, what does triplet therapy in AML mean for the future?
Dr. Naval Daver:
So when we say triplet therapy, what we’re really thinking about is building on the existing FDA-approved combination of HMA venetoclax (Venclexta), so as a background venetoclax, showed a CR, CRI which is a complete remission rate of about 70 to 75 percent with the median survival in 15 months.
This was in older patients, about 75 years in age, those who were not considered fit for intensive chemotherapy, although this was a major step forward in comparison to what we have seen with traditional low intensities with azacitidine (Onureg or Vidaza), decitabine (Dacogen) alone, we do see the three-year survival is about 25 to 30 percent.
So this is progress compared to 10 percent long-term survival, we used to get a decade ago, but, of course, we want to improve on that. Also, a molecular analysis of data has shown that there are certain molecular subsets that don’t respond as well to azacitidine, venetoclax or if they respond they relapse quickly these include FLT3 mutated and the TP53 mutated as well as potentially MLL rearranged.
And so here we have started incorporating the targeted therapies like inhibitors like the menin inhibitors like CD47 antibodies to target those specific high-risk or bad molecular cytogenetic groups, and we are seeing that with the combinations of these three drugs, especially for those particular molecular subsets.
So azacitidine and venetoclax for FLT3 inhibitor for FLT3 mutator, azacitidine, and venetoclax, magrolimab for TP53 mutated, the response rates that we’re getting, as well as the depth of response and the early trends towards survival are looking very, very promising compared to what we have seen with azacitidine venetoclax alone.
So we believe, and I personally believe that these three drug combinations, the so-called triplets will actually be eventually the way to go forward now, that means that one has to realize that when you add a third drug, there is a cumulative myelosuppression, azacitidine-venetoclax is already a myelosuppressive regimen.
Yes, it’s manageable, but it is myelosuppressive. And the third drug, this can become more cumulative, so we have been working for the last three, four years and continue to work on those optimization because since we are seeing true synergy but pre-clinically and what we think in the clinic, we are not needing to give full doses and we’re doing reduced durations of venetoclax and those with FLT3 inhibitor, and now we feel that some of those triplets are actually giving very, very, very good efficacy.
There’s a lot of discussion in the community of whether we need to combine all two drugs up front or can be sequence these drugs or can we introduce a targeted therapy based on a molecular escape, and I think a lot of these will have to be evaluated and many of these are being looked at in various trials, but I do think the bottom line is that bringing in your targeted therapy or immunotherapies early on in the frontline setting and some way or the other is probably where you’re going to get the most bang for the buck and the most benefit in curing patients long-term rather than trying to reserve them for the salvage, because in salvage AML historically, nothing has really been able to improve the long-term cure rate significantly.
So the activation tip for this question is that now with the identification of certain molecular subsets that have poorer outcomes with the HMA venetoclax, we have started incorporating targeted and immunotherapies in the earlier settings, either up front in the three drug combination or an early sequential approach.
And we believe that with such combinations, we may be able to achieve deeper remission and longer responses. Some of the early data with the FLT3 inhibitor as well as the CD47 antibody triplets are showing very, very promising activity and are now moving into larger multi-center and randomized studies.
https://powerfulpatients.org/wp-content/uploads/What-Does-Triplet-Therapy-in-AML-Mean-for-the-Future-2.png600600Kara Rayburnhttps://powerfulpatients.org/wp-content/uploads/New-Logo-300x126.pngKara Rayburn2023-02-01 15:47:332023-04-20 10:55:07What Does Triplet Therapy in AML Mean for the Future?
How are acute myeloid leukemia (AML) patients assessed for intensive chemotherapy? Dr. Catherine Lai from Penn Medicine explains eligibility criteria. Learn factors that impact patient eligibility and treatment options for AML patients who are categorized as ineligible for intensive chemotherapy.
[ACT]IVATION TIP from Dr. Lai: “Talk with your physician about how they will determine whether or not you are fit or unfit for intensive chemotherapy.“
Okay, Dr. Lai, what are we learning about patients with untreated AML who are ineligible for intensive chemotherapy?
Dr. Catherine Lai:
To define ineligible for intensive chemotherapy, I think that that is a moving target because historically, we would define patients as eligible for intensive or less intensive chemotherapy based on an age cut-off. And as the population is becoming more fit and is also getting older, what I would like to say is that we should use physiologic age, not chronologic age to determine who is eligible for intensive chemotherapy, and that is…in terms of how that is assessed, that is not uniformly done.
But, in general, it takes into account how active a patient is and what they’re able to do on a day-to-day basis, so mostly their physical function, we also take into consideration their cognitive function as well, but to a lesser extent.
So, for patients who are ineligible for intensive chemotherapy, the standard practice would be the combination of azacitidine (Onureg or Vidaza) or decitabine (Dacogen), both of which are hypomethylating agents in combination with venetoclax (Venclexta), and that combination has really changed the landscape in terms of how we treat patients, it can be given as an outpatient, so it’s much better tolerated and has fewer side effects compared to intensive chemotherapy.
So the activation tip here is to talk with your physician about how they will determine whether or not you are fit or unfit for intensive chemotherapy.
https://powerfulpatients.org/wp-content/uploads/Assessing-Untreated-AML-Patients-Who-Are-Ineligible-for-Intensive-Chemotherapy.png600600Kara Rayburnhttps://powerfulpatients.org/wp-content/uploads/New-Logo-300x126.pngKara Rayburn2023-02-01 13:28:252023-04-20 10:50:00Assessing Untreated AML Patients Who Are Ineligible for Intensive Chemotherapy
What are the latest treatments in acute myeloid leukemia (AML)? Dr. Catherine Lai from Penn Medicine discusses the increase in available AML treatments. Learn about combination therapies and treatment options for patients with IDH1, IDH2, and FLT3 mutations.
[ACT]IVATION TIP from Dr. Lai: “Ask your physician and your oncologist when you’re talking with them about what all the newest therapies are and what would be specifically the best treatment for their specific leukemia with respect to the different mutations.”
Dr. Lai, for newly diagnosed AML patients, what are the latest available therapies?
Dr. Catherine Lai:
That’s a great question. The last, I would say, a handful of years have really seen a dramatic increase in the number of new treatment options for AML patients, specifically since 2017, the FDA has approved 10 new drugs for AML, that’s both for patients who are newly diagnosed and in the relapsed refractory setting.
And so what I would say is that we break our patients into two different categories in terms of being able to tolerate intensive chemotherapy versus non-intensive chemotherapy, and as well as looking at specifically targeted mutations that patients may have so that we can better understand the disease but also treat these patients more specifically to try to maximize efficacy while minimizing toxicity.
And so specifically, I would say for patients who have FLT3 mutations, there are drugs such as midostaurin (Rydapt) and gilteritinib (Xospata), there are drugs for mutations in IDH1 and IDH2, enasidenib (Idhifa) and ivosidenib (Tibsovo) and recently, or in December of 2022, olutasidenib (Rezlidhia)was also approved for IDH1-mutated patients as well.
We have a general targeted agent that’s an oral chemotherapy that probably has made the biggest difference in how we treat patients called venetoclax (Venclexta), and that’s used in combination with azacitidine (Onureg) or decitabine (Dacogen), or low dose cytarabine (Cytosar).
Although most commonly in the United States, we use azacitidine or decitabine in combination with the venetoclax, and that I think is really what I’d say has been practice changing for the most part, in terms of both increasing the complete remission rates as well as the overall survival for these patients. So I would say there are a lot of new drugs. It is all very exciting.
The biggest activation tip in terms of takeaways is to ask your physician and your oncologist when you’re talking with them about what all the newest therapies are and what would be specifically the best treatment for their specific leukemia with respect to the different mutations.
Art:
Okay. Dr. Lai, what are the latest approaches to combination chemotherapy to treat AML?
Dr. Catherine Lai:
So, the latest approaches for combination chemotherapy would be in the combination of a hypomethylating agent, azacitidine or decitabine in combination with venetoclax. This is the most practice-changing combination that has been approved since 2017 to 2018, and now more recently, what’s been happening is now looking, so we call that a doublet, and now it’s been looking at…what we’ve been studying is now whether or not triplets are more effective, when we do have triple combinations, we do see an increase in toxicity and so on, we haven’t come up with the right algorithm in terms of what that exact formula should be, but often I think about it in kind of a three-fold in terms of wins the right time, what’s the right combination, and how do we see in the drugs, and I think the sequencing is the biggest thing that we don’t yet know, and how do we combine the two different..two different drugs in a way, and how do we give them in a way that will maximize efficacy, will minimize the toxicity, so as an example is, Do we give two drugs for a specific period of time, and then after some determined time point, do we…
And change it to a different set of combination of drugs to make sure that patients are getting the most benefit of the drugs, and we don’t know that yet, but I think that that’s where the general direction…where the landscape is heading, so the activation tip I would take home from this is just to have a conversation with your physician about potential clinical trials and how combination therapies are being used.
How do clinical trials advance acute myeloid leukemia (AML) research? Dr. Farhad Ravandi-Kashani discusses newer AML treatments that have changed the landscape of care and how patient trial participation moves research forward.
Dr. Farhad Ravandi-Kashani is professor of medicine and Chief of the Section of Developmental Therapeutics in the Department of Leukemia at The University of Texas MD Anderson Cancer Center in Houston, TX. Learn more about Dr. Ravandi-Kashani.
When it comes to AML research and emerging treatment options, what are you excited about right now?
Dr. Ravandi:
Well, I think one of the biggest, I would call, revolutionary changes in AML was the introduction of venetoclax (Venclexta), because AML is a disease of the older population.
The median age is about 68, which means half of the patients are older than 68, and among the other half, majority are older than 55. And when you go beyond 60, 65, traditional chemotherapy is not well-tolerated. But the introduction of venetoclax plus azacitidine (Onureg) or decitabine (Dacogen), depending on the center, has really completely changed the management of older AML patients from a situation that it was dismal treatment to a situation that’s still not great, but it’s a lot better, as in we don’t cure the majority, but many people have a tolerable therapy and live with their disease for several months if not several years.
And personally, I have treated a 97-year-old patient, and she did well for three years, so. Because of this drug, age is no longer as frightening as it used to be for advanced age.
Laura Beth:
So, where do clinical trials fit in when it comes to choosing treatment?
Dr. Ravandi:
So, the best drugs that we have available now, the venetoclax that I mentioned and all the other drugs that I mentioned, targeted drugs, came from clinical trials.
If we don’t do clinical trials, we would be still doing the same treatments that we were doing in the 1970s and ‘80s.
In fact, up until about seven or eight years ago, many places were still doing the same treatments that was developed in 1970s, which in the era of computers, and Apple, and everything else, it’s mindboggling that we should be doing something that we were doing in the ‘70s. So, clinical trials are important to move the field forward. They are at major academic centers, all the clinical trials are extremely well-vetted and scientifically vetted, as well as with institutional review boards, ethically vetted. So, patients can be sure that they’re not going to get anything less and potentially more than what they would normally get.
https://powerfulpatients.org/wp-content/uploads/Advances-in-AML-Research-_-Where-Do-Clinical-Trials-Fit-In.png600600Kara Rayburnhttps://powerfulpatients.org/wp-content/uploads/New-Logo-300x126.pngKara Rayburn2022-12-07 13:24:032022-12-07 13:29:10Advances in AML Research | Where Do Clinical Trials Fit In?
Dr. Daniel Pollyea, an AML specialist, dispels common myths around the causes and symptoms of AML and shares advice so that you can identify credible resources for information. Download the Program Guide here.
Dr. Daniel A. Pollyea is Clinical Director of Leukemia Services in the Division of Medical Oncology, Hematologic Malignancies and Blood and Marrow Transplant at University of Colorado Cancer Center.
I’m Ross Reynolds. Today we’re gonna be debunking some common misconceptions about the causes and symptoms of AML.
And joining me is Dr. Daniel Pollyea. Dr. Pollyea, could you introduce yourself?
Dr. Pollyea:
Yeah. Hi. Good morning, everyone. I’m Dan Pollyea. I’m an Associate Professor of Medicine here at the University of Colorado, where I am the Clinical Director of Leukemia Service.
Ross:
I wanna emphasize to you that this program is not a substitute for medical advice, so be sure to consult your healthcare team when it comes to solid information about it. But you will get some background that I think you’re gonna find useful. And you might have some questions as we go along.
Dr. Pollyea, let’s start out with the basics. What are the causes of AML?
Dr. Pollyea:
Yeah. So, Acute Myeloid Leukemia, it’s a disease, a cancer of the bone marrow.
And it’s the result of an accumulation of mutation and chromosomal abnormalities that affect the DNA of a precursor cell in the bone marrow, otherwise known as a stem cell.
And those abnormalities accumulate until that cell can no longer properly mature, and it also can’t properly die. And so, a cell like that just makes copy after copy after copy of a cell until it crowds out the whole bone marrow with these sorta useless, immature cells.
And the end result of that is the failure of the bone marrow, which causes all of the problems associated with this disease. So, biologically, that’s sort of what happens to make this disease occur.
Ross:
What are some of the myths that you hear from patients that come in and they say, “Oh, this must’ve caused my AML,” but you have to tell them that’s not so?
Dr. Pollyea:
Right. So, I mean, this is one of the most frustrating issues for patients and their families after diagnosis. I mean, it’s a rare disease, only about 30,000 cases a year in the United States. And so, trying to associate a rare disease with external or environmental factors is difficult to impossible. So, although there are a variety of exposures that probably contribute to this disease, we have very little understanding of what those exposures typically are or how that all works.
So, there’s a few things that we know pretty well; large doses of radiation, either associated with like industrial accidents like the Chernobyl disaster, or some of the radiation therapies that patients receive for other types of cancer. Other types of chemotherapy that are used to cure other cancers can contribute to this disease in later years.
We know that there are certain precursor conditions that can evolve to AML, so a person with myelodysplastic syndrome, for instance, has a fairly high chance of someday evolving to develop Acute Myeloid Leukemia. But beyond these sort of a few associations, there isn’t a whole lot that’s known or proven.
Ross:
Now there is radiation associated with X-rays, and some people think that X-rays can cause AML. Is that true?
Dr. Pollyea:
Yeah.
So, I mean, I think a priori no because millions of people get X-rays every day, and only 30,000 people a year get AML. So, clearly it’s not a simple association between getting an X-ray and developing AML. But I think that there is an unknown interaction between environmental exposures and a person’s individual genetic makeup that makes a person more or less susceptible to developing something like AML with respect to exposure to the environment or X-rays and things.
So, while you cannot say that getting an X-ray will lead to AML, certainly there are some people who are more sensitive to the damage that’s done by something like an X-ray. And so, the best course of action is to be cautious and judicious about your exposure to these things, but not to not get these things when they are medically necessary.
So, that’s the challenging balance.
Ross:
Here’s something else we’ve heard, that weed killers can be a risk factor for AML. Is that true?
Dr. Pollyea:
I mean, I think there’s a lot coming out now about weed killers and their association with other types of cancers. Again, I go back to the limitation we have in that in only 30,000 people a year in the United States get AML. Millions of people are exposed to weed killers.
We’re statistically never going to be able to make a clear association. I think that there are certainly some risks for some people. Whether you’re that person who’s more susceptible to developing leukemia or any other cancer because of exposure to a weed killer is impossible to know.
So, like all of these things, I think the advice we have is you have to live your life. You have to do your best to sort of avoid things that you can avoid that you think would be… Or that may cause problems. But not to let those things prevent you from living a normal life.
I know that’s not a satisfying answer, but at the moment that’s the best answer we have.
Ross:
Is formaldehyde exposure another risk factor for AML?
Dr. Pollyea:
Yeah. We think that it is, and kind of along the lines of benzene. But, again, we think that those studies that have shown those types of association show it in very high amounts, amounts that most people in this country would not be exposed to. But I do think, or we do think that there is something to that, to formaldehyde somehow contributing to this.
Ross:
What’s the difference between a risk factor for AML and a cause of AML?
Dr. Pollyea:
Yeah. So, I think risk factors by definition are things that may contribute to AML. And a risk factor for AML by that definition could be walking down the street and having some exposure to radiation from the sun. A cause of AML is something that is a much more solid sort of well-understood factor.
Like I said before, having myelodysplastic syndrome, there is a high chance that that can evolve to Acute Myeloid Leukemia. And if that happens then the MDS, the myelodysplastic syndrome, could be considered or would be considered the cause of your AML. So, very, very different in terms of the amount of evidence that goes into making those determinations
Ross:
Is there a genetic component to this? Can this run in a family?
Dr. Pollyea:
Yeah. So, this is a disease of the genome.
So, I mean, in a lot of respects it is a genetic disease. But the question is very different when you ask is this an inherited genetic disease? Is this disease due to a gene that I inherited from a parent or could pass along to a child?
For many, many years, the answer from the medical community was, “No.” This was not considered to be a disease that clustered in families or that could be inherited. We now know that that’s not necessarily the case. There are some very rare cases where this does seem to travel in families or cluster in families. And we’re now beginning to understand who those people are and what those genes are.
But the vast majority of people with this disease did not inherit a gene to contribute to it and cannot pass this along to a child. This is a random, spontaneous event that occurred within one person’s own body and is not traveling within family. So, we’re learning more and more about this, but really, the vast majority of this is not an inherited genetic condition.
Ross:
You’ve mentioned gene mutations. What mutates a gene? What causes that to happen that could lead down the line to AML?
Dr. Pollyea:
Yeah. Yeah. That’s a great question. Most of the time we do not know the answer to that. These gene mutations occur spontaneously, randomly, and we don’t understand why they happen when they do happen.
And I know that’s, again, not a satisfying answer. It’s very frustrating, particularly patients come in, and, “I’ve lived a healthy lifestyle. I’ve done everything right. I exercise. I eat right. How could this have happened?”
These are things that for the most part are out of the control of a person. These aren’t impacted by your diet or your activity levels, what you eat or don’t eat, what you do or don’t do. That’s a real frustration. In the end, in almost all cases we don’t know or understand why these gene mutations or these, I call them mistakes in the body, occur when they occur. We don’t understand them.
And, Dr. Pollyea, someone asked if benzene can be a risk factor for AML.
Dr. Pollyea:
Yeah. So, benzene is one of the sort of rare environmental exposure associations that we do have clear associations with AML.
But the level of benzene that a person would need to be exposed to is really something that hasn’t been seen in this country in a very long time.
We’d be talking about like an industrial accident type exposure in almost all cases, so being exposed to a cleaning solution or some other fairly minor exposure to benzene, we don’t think is enough, in most cases, to prompt this disease. But benzene in very high doses, like an industrial accident, yes, that is something that we understand can certainly contribute or cause AML.
Ross:
Autoimmune diseases, such as arthritis, can they increase the risk of AML?
Dr. Pollyea:
Oh, boy. That is a really interesting one. So, there are papers in the literature that do support those associations. And I know in my own practice I certainly see that trend. So, I do think that there is something there. There is a proven association between autoimmune conditions and myelodysplastic syndrome, which I said before can be a clear precursor condition to AML. So, certainly, that is an association that is a possibility.
It can be a little difficult to tease out whether it’s those diseases that are associated with ultimately developing AML, or the treatments that people get for some of those autoimmune diseases. Those treatments can modulate the immune system in certain ways that may, in fact, contribute or drive the disease. So, that’s a difficult thing to tease out.
But in general terms, yes, I think there are some associations. Now not by a long shot everyone with an autoimmune disease gets AML. It’s a teeny, tiny fraction. But I think there is an association there.
Ross:
How easy is it to diagnose AML?
Dr. Pollyea:
Well, I mean, I think there’s very clear diagnostic criteria for AML. But I guess that doesn’t really answer the question. And we certainly have patients who come to us after many months of frustration without a clear diagnosis.
So, those scenarios can play out. Many times AML’s a very dramatic presentation, so people get very, very sick very, very quickly with extraordinarily high white blood cell counts and suppression of all the other blood counts that come from the bone marrow like red blood cells and platelets.
In those cases it’s pretty clear that there is a type of acute leukemia going on. There can be some difficulty distinguishing Acute Myeloid from Acute Lymphoblastic Leukemia; those are sort of like cousins, but very different and treated differently. So, it kinda runs the gamut. I mean, it can be pretty clear, but it’s sometimes missed, so yeah.
Ross:
This is a great lead-in to my next question, which is about the symptoms of AML. What should be the warning signs that this might be something you need to get looked at?
Dr. Pollyea:
Right. So, at presentation, the main symptoms are reflective of the fact that the bone marrow, the organ that makes all the cells of the blood, has failed.
So, that can cause severe anemia. Signs of anemia: a white sort of appearance, feeling dizzy or lightheaded when standing, short of breath, weak, tired, fatigue. Those are all pretty clear presenting symptoms for AML. Because the bone marrow also is responsible for making platelets that clot the blood, some people will present with a bleeding complication, or a very subtle rash made up of these particular red dots. We call that a petechial rash. And that rash can come on when the platelet count gets very low.
Sometimes a person will present with an infection or infections that don’t go away or don’t clear because of decrease in white blood cells, the infection-fighting cells of the bone marrow. Those are made in the bone marrow and can fail in the setting of this disease. So, those are the most common symptoms at presentation, symptoms that are reflective of bone marrow failure.
Ross:
You mentioned that sometimes the presentation could be very dramatic, and it sounds like the symptoms are very severe, very quickly. Is that always the case? Is that often the case?
Dr. Pollyea:
That is the case in, I would say, a minority of times. That’s usually the case. It’s more often seen in younger patients with AML. Typically, older patients with AML have a more smoldering course and a much less dramatic presentation, although this sort of very dramatic and dangerous presentation can happen in older patients, but it’s probably something like a third of the time that those very dramatic and medical emergency presentations occur.
Ross:
How important is early diagnosis?
Dr. Pollyea:
Well, I mean, it’s crucial. I mean, in particular in those cases where it’s a very dramatic and proliferative diagnosis, or presentation. A quick diagnosis and recognition of this condition is very important because the sooner a person starts effective treatment the better the ultimate outcome is.
I would say in general terms that applies to all AML patients, but certainly there’s some degrees of variation. So, there’s some AML patients that when I hear about their case on the phone from a referring doctor, it’s appropriate to see them next week in the clinic.
So, it’s not always a medical emergency, but we would never, even in those next-week-in-the-clinic patients, this isn’t something that can wait for weeks or certainly months. This is something that needs to be addressed fairly quickly.
Ross:
What are the best ways to manage those symptoms?
Dr. Pollyea:
Right. So, I mean, at presentation, all those symptoms, the best way to manage those are to start treatment as quickly as possible. So, impacting the underlying cause of this disease is the most important and critical factor to getting a person feeling better because all of these problems stem from the disease in the bone marrow, and so everything else that you do to sort of help a person’s symptoms are Band-Aids when you’re not talking about getting to the root cause.
So, that’s at presentation. Now once we start treatment, there are many potential side effects to any number of treatments. And it all is dependent on what treatment you’re getting and other things about you that will make this a significant problem in some cases. And in that setting, we do have ways that we can aggressively manage a person’s side effects.
Ross:
Can you manage all of the symptoms? Or can people still be experiencing symptoms even after they’re in treatment?
Dr. Pollyea:
Absolutely. So, a person with this disease, depending on how long they’ve had it and some of the features, may not be feeling back to their baseline self for potentially weeks or months after treatment starts in the best-case scenario. So, that can be very frustrating, but a person needs to sort of be able to continue to have a good outlook and stay positive.
Because we are able in many cases to make a big impact on this disease and return a person to their pre-disease quality of life.
Ross:
What are some of the myths that you hear, Dr. Pollyea, about the treatment? Some things that people come in to you saying they think that it helps, but there’s no science to back that up?
Dr. Pollyea:
So, myths about treatment, so many people have a lot of preconceived notions about the intensity of a therapy that they’re going to be asked to withstand. And although sometimes we do treat this disease very intensively, that’s not always the case, and now we have some very effective lower-intensity regimens that can be used in a variety of different scenarios.
There are a lot of people who have a lot of preconceived notions about a stem-cell transplant or a bone-marrow transplant and whether or not they would be eligible for this based on maybe what they’ve heard from friends or family, or what they’ve seen in the internet.
And those are often incorrect. And so, keeping an open mind about treatment options, and discussing those in detail with your doctor are really, really important.
Ross:
You mentioned sometimes it presents in young people, sometimes in older people. What’s sort of typical?
Dr. Pollyea:
This is a disease of predominantly older patients, so the median age of presentation is 68. So, that means that over half of the patients are over 68 years old at diagnosis. So, while this does happen, can happen in younger patients, that’s really an unusual situation. This disease is, like I said, it is predominantly a disease of older patients.
Ross:
There are some patients who I understand think that supplements can deal with the symptoms of AML. Is that accurate?
Dr. Pollyea:
You know, I mean, I think the supplement question is always a challenge. A lot of these supplements, or most of these supplements have never been tested with the rigor of treatments that we’re accustomed to in the medical establishment.
That being said, I won’t deny that some of the supplements can help patients based on what patients’ experiences are and what they tell me. I think what’s really important is just be very open and honest with your doctor about the supplements that you’re taking or want to take to ensure that there are no sort of unanticipated interactions with treatments.
Because I think most doctors are very open to having their patients care for themselves in the ways that they’ve become accustomed to, and they know their bodies very well, and we’re very open to that. But there are sometimes that a drug or a supplement might have a bad interaction with the treatment.
And so, a good example in my practice is antioxidants. So, there’s a lot of literature, a lot of interest in antioxidants as cancer-prevention treatment.
And a lot of that is not well-established, but still I don’t see much harm. But when it comes time to treating a cancer, that’s a very different situation. When we give a patient treatment to try to kill the cancer cells, many times we’re trying to provoke oxidation. That’s part of how these drugs and these treatments work.
So, if you’re taking those treatments, but also at the same time taking antioxidants, there’s the potential you could sort of be cutting your therapy off at the knees, fighting it with one hand behind your back. So, for the period of time when my patients are getting an active treatment, I ask that they don’t take it antioxidant.
And they can resume that in the future in the hopes of preventing another cancer. But the time to prevent with an antioxidant isn’t appropriate when you’re dealing with an active cancer. So, that’s just one example.
Ross:
Fatigue could be a symptom of AML, but there are a lot of causes of fatigue.
How do you differentiate between something that really could be AML and something that isn’t?
Dr. Pollyea:
Yeah. That’s a challenge because I think these are, as I said, older patients. And older patients have a lot of other medical problems. And older people get fatigued, just that’s unfortunately part of the normal aging process. So, we would usually make an assumption that a person’s fatigue and diagnosis is due to the leukemia, the anemia as a result of the leukemia.
But as we successfully treat a patient if they are responding based on their numbers and other objective criteria, but the fatigue is not improving then I think that’s where we would start to look at other contributing factors, and there can be many, so having an open mind at that point is important.
But at the beginning, this is such a monster of a disease, it’s so overwhelming, I think the focus is usually on assumption that the fatigue is due to the disease or to a treatment associated with this disease.
Ross:
This question: is loss of appetite a symptom of AML?
Dr. Pollyea:
Yeah. I definitely see that, hear that, so sometimes people come in and they say that. Sometimes it may not be a loss of appetite, but an extreme weight loss, so a lot of different types of cancer, including AML, can cause that, just basically unintentional weight loss.
A person’s not trying to lose weight. They’re eating what they think is their normal amount and they’re losing tremendous amounts of weight. So, those are both potential presenting symptoms with AML. And loss of appetite, unfortunately, can be associated with some of the treatments for this disease. And taste changes, things not tasting good, can all contribute to that as well, so those are all challenges that our patients face.
Ross:
How important is to get a second opinion? I mean, are all doctors like you pretty much on the same page when it comes to symptoms and treatment?
Dr. Pollyea:
So, this is a challenge. So, the answer to the second question first is unfortunately, no. A lot of this hasn’t quite been standardized. And some doctors, oncologists, cancer doctors, they’ll predominantly be treating the things that are common: colon cancer, breast cancer, prostate cancer. And they will probably only have a few cases of acute leukemia a year.
And so, their approach to this is going to be different than somebody who spends all day seeing patients with AML and thinking about AML.
So, a second opinion is a very nice thing to be able to do. The problem with this disease is that most times it doesn’t afford that opportunity. So, with other conditions you have some time to go out, read about it, talk to some different doctors, get a good plan together.
With AML, often that’s not a possibility. A person is so urgently sick that you have to sorta deal with the resources where you are. The best recommendation I have there, if you do find yourself in a situation where there’s not a lot of expertise is to ask your doctor to just call somebody in the region or email somebody in the region who may have that expertise.
And most doctors all over the country have that sort of resource or partner that they will go to and talk the case through with them, and maybe a transfer to one of those high-volume centers is appropriate.
And maybe that’s not a possibility or appropriate, but maybe you would benefit from just talking… Maybe your doctor would benefit from talking this through. But in cases where it’s not such a dramatic presentation, then yeah, for sure, I think a second opinion can be appropriate. But this isn’t something that can be sort of drawn out for long period of time.
Ross:
You know, when you find out something like this, your tendency might be to jump on the web and start searching for AML. How do you vet those sources that you look at? How do you figure out that their – what would be a sign that they’re bogus sources?
Dr. Pollyea:
Yeah. I mean, I think this field is so rapidly changing and the treatment that we have, that I would, for the most part, assume that what you’re finding on the web is not relevant and is not an up-to-date resource. So, the resources that I listed, the NCCN, UpToDate, the Leukemia & Lymphoma Society, I should mention.
A very important resource that has up-to-date information, and they have even phone numbers for patients and their families to call to get connected with the proper people in a particular city, so that is a really important resource. But I’d be really, really cautious about what you find on the internet because things are changing so fast in this field. There’s a lot of outdated and misinformation on the internet.
Ross:
Well, then there’s outright scams. One of the things you mentioned before we went on is be cautious if someone’s asking you to put money upfront, or if it’s a nonmedical facility. What are some things that people should watch out for?
Dr. Pollyea:
Yeah. So, one of the things that is so important in our area is clinical trials and participating in clinical trials. Patients who opt to do this and receive experimental therapies can sometimes get the treatment of the future, get a drug that’s not currently available through the FDA, but may have a lot of promise.
And this is the way that we fight this disease. We’ve recently had an onslaught of approvals for AML and that’s because the patients being willing to participate in sanctioned clinical trials. So, participating in a sanctioned clinical trial is crucial, and it’s always a recommendation of all leukemia doctors.
When you participate in a conventional clinical trial, you’re asked to sign a consent form that explains what you’re doing and why. There is a confirmation that this has been vetted by an institution’s regulatory board that is prioritizing the safety and well-being of you, the patient. This has been approved by the FDA as a clinical trial. Nobody would ever ask you to pay money. That’s not ethical to participate in a clinical trial. Insurance covers whatever standard of care. And the clinical trial covers anything that isn’t.
So, if you find yourself in a situation where you’re not being asked to sign a consent form, where a clinical trial has not been reviewed by a regulatory board, where your doctor is not a leukemia specialist, where the FDA has not sanctioned the treatment, all of those are alarm signs.
Because there are people out there that are preying on patients in a desperate situation, a very difficult time in their life, and giving them sort of false hope and leading them down paths that are not legitimate.
One easy thing to do to sorta check to see if a clinical trial is legitimate is to go onto clinicaltrials.gov.
This is a resource set up by our national healthcare system that now feeds in every legitimate clinical trial from all over the world, needs to be registered on clinicaltrials.gov. So, if you can’t find your clinical trial on clinicaltrials.gov, I would have a lot skepticism and caution about that.
Ross:
Like what advice do you have for people when they’re first diagnosed? What are the first things they should try to do?
Dr. Pollyea:
Yeah. I mean, that reaction is totally normal and natural. I mean, many times these people are perfectly healthy or have been perfectly healthy, and this news is a complete shock.
And so, it is normal and appropriate to have some period of grieving for the healthy life that you are losing. But I would also, while giving yourself that time to grieve, first, draw on your support system, your family, your friends. Allow them to help you. Accept that assistance that they have. And to be optimistic because we are getting so much better at treating this disease.
I had mentioned before, there has been an onslaught of approvals for drugs in this area the likes of which hasn’t been seen in decades. We have new tools and weapons in our arsenal that we couldn’t have dreamed of even a few years ago.
We in our community are very excited and hopeful about the future and we hope that that will translate ultimately to patients, but being depressed or being down, being scared, all of that is normal.
All of that is expected. Anyone would feel like that. Allowing yourself to have those feelings and emotions is important, as long as it doesn’t get in the way of doing what you need to do to fight this disease.
Ross:
It sounds like you’re hopeful about new treatments for the disease. How about a cure? What’s the science? What’s the medical science say about that? Are we getting any closer to that?
Dr. Pollyea:
We are getting closer to curing this in more cases. So, like I mentioned before, as bad as this is, we can already cure some subsets of patients. There’s one type of Acute Myeloid Leukemia called Acute Promyelocytic Leukemia, APL. It’s an uncommon form of AML, less than 10 percent.
But we can cure close to 99 percent of people with APL. And APL, 15 years ago, was universally the worst form of acute leukemia to get. So, that dramatic 180 that we’ve seen in APL, we are hoping to translate into other forms of AML.
Some other forms of AML have cure rates as high as 50 percent, 60 percent, 70 percent in the right setting. Sometimes we can cure patients with a stem cell transplant fairly reliably. So, we are very, very hopeful about our ability to continue to make progress and cure more and more and more of these patients. That’s the future that we see.
Ross:
Dr. Pollyea, thank you so much. And thank you so much for ending on such a positive note. We really appreciate it. And thank you for joining us for this program today.
To learn more about AML and to access tools to help you become a proactive patient, visit powerfulpatients.org. I’m Ross Reynolds. Thanks for joining us.
https://powerfulpatients.org/wp-content/uploads/Pollyea-1.png600600Kara Rayburnhttps://powerfulpatients.org/wp-content/uploads/New-Logo-300x126.pngKara Rayburn2019-06-05 15:38:122022-09-08 12:04:58Fact or Fiction? AML Causes & Symptoms
