Tag Archive for: CD47 antibodies

A Look at Ongoing Acute Myeloid Leukemia Phase III Trials

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A Look at Ongoing Acute Myeloid Leukemia Phase III Trials from Patient Empowerment Network on Vimeo.

What are the acute myeloid leukemia (AML) Phase III clinical trials that are ongoing? Dr. Naval Daver from the University of Texas MD Anderson Cancer Center shares his perspective about encouraging trials. Learn about the MORPHO Study and others. 

[ACT]IVATION TIP from Dr. Daver: “The maintenance with gilteritinib and the MORPHO Study, as well as the relapsed refractory study as well as the use of a e-selectin inhibitor called uproleselan, and hopefully this will lead to approval of the next batch of three or four drugs, which will further improve outcomes for frontline as well as relapsed AML.”

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Transcript: 

Art:

Dr. Daver, can you speak to some of the ongoing Phase III trials in AML, what are you most excited about?

Dr. Naval Daver:

This time there are numerous ongoing phase three in acute myeloid leukemia, some in the frontline, some in the relapse setting. In the frontline setting, the ones that I’m most excited about are trials incorporating a novel immunotherapeutic pathway called the CD47 antibody that works to activation of macrophages, these are looking at a very high-risk molecular group of acute myeloid leukemia, the TP53 in adverse cytogenetics, and there are two randomized phase threes with this agent, one focused on TP53 mutated AML looking at the azacitidine and magrolimab versus the current standard of care FDA-approved azacitidine-venetoclax (Onureg or Vidaza-Venclexta) in TP53 mutated. 

The other is actually looking at all older unfit AML so trying to improve on azacitidine venetoclax doublet with a triplet, so this is looking at azacitidine venetoclax magrolimab versus azacitidine-venetoclax placebo so if both of these trials are positive, then this will lead to incorporation of immunotherapy in the frontline setting in AML, which is exciting and something we’ve been working towards for the last 10, 15 years.

The other Phase III trials in the frontline setting or in the maintenance setting really that I’m excited about is called the MORPHO Study…this is using a FLT3 inhibitor gilteritinib (Xospata) as a maintenance post-transplant, so we know FLT3-mutated patients respond well, when they receive intensive induction FLT3 inhibitor, we still need to take them to transplant because even though the initial response is good, many can relapse. 

So we actually try to give to the cycles of intensive induction for the move to transplant, and then if we start there, we still see at about 40 percent of these patients can relapse in the next three years, so this has led to efforts to add a maintenance FLT3 inhibitor gilteritinib single agent post-transplant as a maintenance for one to two years versus placebo observation, which has historically been a standard of care, and so this is being looked at a large multi-center called the MORPHO Study that we hope to get data from in the near future.

Another study in the similar design that’s being done by the UK cooperative group is looking at maintenance with the oral azacitidine, post-transplant for non-FLT3, so similarly, can we overall improved outcomes not just for FLT3, but the general patient population is going to transplant by using the maintenance oral azacitidine post-transplant versus placebo.

And in the relapse setting, there is a very novel unique oral therapy drug called uproleselan, which is an e-selectin inhibitor, and this agent is now being combined with traditional salvaged chemotherapy such as FLAG-Ida mec versus the placebo mec plus FLAG-Ida or mec in the relapse setting.

And that’s what he’s actually been completed to enrollment, and we’re hoping to hear data from that in the near future. So these are the major randomized studies focusing on TP53, FLT3, and relapsed refractory AML  that we’re looking for in the near future and hopefully could lead to two or three more new approvals in the AML space.

My activation tip for this question is that there are ongoing numerous frontline Phase III as well as relapsed refractory Phase III, targeted immunotherapy approaches, specifically among these we’re excited about the CD47 antibodies. The maintenance with gilteritinib and the MORPHO Study, as well as the relapsed refractory study as well as the use of a e-selectin inhibitor called uproleselan, and hopefully this will lead to approval of the next batch of three or four drugs, which will further improve outcomes for frontline as well as relapsed AML. 

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What Does Triplet Therapy in AML Mean for the Future?

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What Does Triplet Therapy in AML Mean for the Future? from Patient Empowerment Network on Vimeo.

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.”

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Transcript: 

Art:

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. 

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AML Clinical Trials Critical to Treatment Breakthroughs and Improvements

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AML Clinical Trials Critical to Treatment Breakthroughs and Improvements from Patient Empowerment Network on Vimeo.

Why are acute myeloid leukemia (AML) clinical trials so critical? Dr. Naval Daver from the University of Texas MD Anderson Cancer Center shares his perspective about clinical trials. Learn how clinical trials help both current and future AML patients. 

[ACT]IVATION TIP from Dr. Daver: “Clinical  trials are critical, both for the patients themselves to get access to what we call tomorrow’s medicine today as well as potentially to help move the entire field forward.”

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A Look at Treatment Strategies for High-Risk AML Patients

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Transcript: 

Art:

Dr. Daver, what is the importance of clinical trial participation as it relates to breakthroughs in AML, and what advice do you have for AML patients considering a clinical trial?

Dr. Naval Daver: Clinical trials are critical for the progress that we have already seen an acute myeloid leukemia, the drugs that have been improved in the last six, seven years, including venetoclax (Venclexta), FLT3 inhibitors, midostaurin (Rydapt or Tauritmo),  gilteritinib (Xospata), hopefully quizartinib other emerging targeted therapies…IDH1, IDH2 inhibitors, menin inhibitors, CD47 antibodies, we’ve learned about all of them and have got approvals and many of them through the ongoing clinical trials.

I think it’s very important for patients to realize that in most large academic centers, we will only participate in the clinical trial if we think it has the potential to improve the standard of care in the future. There’s very little incentive for academic investigators or clinical investigators, such as myself, we’re very, very busy to get involved in a trial if we don’t think that it has the potential to improve the outcome or change the nature of AML therapy in the future, so a lot of patients often ask me, Oh, I want the randomized or placebo arm. There is no real placebo alone in any AML study that I’m aware of, most of the studies will use standard of care, which is what you would’ve gotten wherever you were getting treatment at home, locally, community hospital versus a standard of care plus where the new drug will be added, whether it’s the FLT3 inhibitor, the CD47 antibody, the menin inhibitor 

So there’s a good chance, 50 percent that you’re going to get standard of care plus that we think has the potential to improve the outcome, of course, you never know, that’s what you do, the trial, but we think based on the previous pre-clinical data to pass when the page to deliver this looks like it will improve the outcome for this molecular or site group versus standard of care, which is what you will have gotten.

So I think it’s important to realize that you will never get less on standard of care and any clinical trial, at least in the AML field, and at least in our experience that they understand. 

Now, beyond that, there’s also a Phase I in two states, and those are the ones that we focus on quite a bit at MD Anderson, these are single arm studies, meaning everybody will get the investigational agent combo, so azacitidine (Onureg or Vidaza) and venetoclax (Venclexta), we were one of the first sites to work on and leave this study and all of our patients in 2015, 2016, we’re getting this regiment, it was not approved to much later in 2019, 2020, and for those three, four years, our patients, hundreds of patients were able to get that combination, which probably cured many, many more than would have been cured to the standard of care until, of course, I’ve got a pro four years later, but for an option, of course, you cannot wait four years, so I’m a huge believer in clinical trials, I think it’s really, really important, both for the patients themselves as well as for the field, for us to be able to move the entire AML field forward for the next decade, and I would very strongly consider looking at or discussing with your treating physician trial options, and then you can look at them on your own through clinicaltrials.gov, or other sites with leukema and lymphoma that give a lot of information on clinical trials. 

So my activation tip related to this question is that I think clinical  trials are critical, both for the patients themselves to get access to what we call tomorrow’s medicine today as well as potentially to help move the entire field forward, all of the clinical drug approvals in progress we have seen in AML in the last six, seven years have come through clinical trials that patients in the past have agreed to kindly participate and helped probably themselves by getting better medications and combinations, and definitely the field to move forward, so definitely a big proponent for clinical trials. 

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A Look at Treatment Strategies for High-Risk AML Patients

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A Look at Treatment Strategies for High-Risk AML Patients from Patient Empowerment Network on Vimeo.

What acute myeloid leukemia (AML) treatments are available for high-risk patients? Dr. Naval Daver from the University of Texas MD Anderson Cancer Center discusses various mutations, potential for cure, and clinical trials. Learn about the outlook for high-risk AML treatments.

[ACT]IVATION TIP from Dr. Daver: “The best way to get up to these agents is to go on clinical trials and incorporate these therapies, both in the frontline setting as well as in the relapsed refractory setting.” 

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What Does Triplet Therapy in AML Mean for the Future (2)

What Does Triplet Therapy in AML Mean for the Future?

Transcript: 

Art:

Dr. Daver, what treatment strategies are available for high-risk AML patients?

Dr. Naval Daver:

High-risk AML patients includes a group of a number of different mutations, and cytogenetic abnormalities, this includes TP53 mutation, as well as adverse cytogenetics, which includes chromosome 17, deletion 5, deletion 7, as well as complex carrier type. This entire group historically had a poor outcome and has had limited responses to traditional intensive chemo, even if we achieve responses there, usually short-lived.

We do have some patients where we are able to achieve remission with intensive chemo or with azacitidine-venetoclax (Vidaza-Venclexta) and transition and transmission them transplant with about 25 to 30 percent potentially achieving a long-term remission and possible cure. 

But aside from that, there is very little potential to cure these patients with just traditional intensive chemo, venetoclax in this area, there has been developments with the emergence new class of immunotherapy drugs, called CD47 antibodies, the one that’s most advanced in this field is a drug called magrolimab, and we are evaluating the drugs such as magrolimab in combination with azacitidine as well as in combination with azacitidine-venetoclax and are seeing high remission rates, both in TP53 mutated and TP53 wild type.

So this pathway that works by activating a macrophages or the immune system to attack the tumor cells, seems to be in some way mutation agnostic with response rates being maintained even in the traditional high-risk subsets, especially such as TP53 and complex cytogenetics for some of the other high-risk groups such as MLL, we’re using targeted therapies like menin inhibitors, and these seem to work well in those patients who have these adverse cytogenetic molecular abnormalities, so there is progress, and we think that the CD47 antibody field and hopefully the main inhibitor feed will be able to improve outcomes in these traditionally molecular cytogenetic subsets.

My activation point related to this question is for high-risk mutations and cytogenetic commonalities such as TP53 complex carrier chromosome 17 MLL,  best hope at this time is in clinical trials evaluating novel therapies such as CD47 antibodies and menin inhibitors. These are not yet FDA-approved, but based on emerging data from the ongoing Phase I, II studies, we think that there is a good chance they will be approved in the future.

However, this time, the best way to get up to these agents is to go on clinical trials and incorporate these therapies, both in the frontline setting as well as in the relapsed refractory setting. 

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