Tag Archive for: JAK Inhibitors

Which Emerging Myelofibrosis Therapies Are Showing Promise?

Which Emerging Myelofibrosis Therapies Are Showing Promise? from Patient Empowerment Network on Vimeo.

What are the latest advances in myelofibrosis therapy? Expert Dr. Gabriela Hobbs discusses various inhibitor therapies, including BET inhibitors, that are currently being studied in clinical trials for patients with myelofibrosis.

Dr. Gabriela Hobbs is a hematology-oncology physician specializing in the care of patients with myeloproliferative neoplasms (MPN), chronic myeloid leukemia and leukemia. Dr. Hobbs serves as clinical director of the adult leukemia service at Massachusetts General Hospital. Learn more about Dr. Gaby Hobbs.

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Transcript:

Katherine:

Can you share with the audience how the field of myelofibrosis has changed over the course of your career? 

Dr. Hobbs:

Yeah, so it really has been a very exciting journey. So, when I was in medical school, I think that we basically had just discovered the JAK2 mutation.  

So, in the course of my own training and then my professional career, we’ve gone from myeloproliferative diseases being conditions where we really didn’t necessarily have a reason why people would get these conditions. Now not only do we know about the JAK2 mutation, but we know about many other mutations that patients can have. Then in 2011, the first JAK inhibitor was approved, ruxolitinib (Jakafi), and since then, three additional JAK inhibitors have now been approved, including pacritinib (Vonjo), fedratinib (Inrebic), and most recently, momelotinib (Ojjaara).  

So, the field has definitely advanced concretely in that regard. But we also just have much more information about how to diagnose these conditions and also how to treat them. Outside of the JAK inhibitors, we’re better at recognizing when patients need to go to get a bone marrow transplant. For example, and our outcomes with bone marrow transplantation have improved significantly. We also have many other treatment approaches that wouldn’t have existed before, and we also recognize that patients with MPNs live with a lot of symptoms. So, I think that we’re better at just the doctoring part of taking care of patients with MPN. So, definitely, the field has just really, really changed significantly in the last two decades.  

Katherine:

What are new and emerging therapies that are showing promise?  

Dr. Hobbs:

Yeah, so the list is long and it’s getting longer. So, in addition to the fact that we now have four JAK inhibitors approved, which is worth just remembering that, because not that long ago we only had one, and one of them was just approved less than six months ago.   

There are many new agents that are being studied in combination with the JAK inhibitors. This past year at the American Society of Hematology meeting, which is the annual meeting where we go to share our research and learn from our colleagues, there were two Phase III studies that were presented at the same time.  

I can’t remember, or I don’t think, but that has really ever happened before for myelofibrosis. One of them was with an agent called pelabresib, which is a type of molecule called a BET Inhibitor. And the other one was with an agent called navitoclax, which is an agent called a BCLXL-BCL2 inhibitor, which is a molecule that helps cells to undergo apoptosis or programmed cell death.   

So, these molecules were both combined with ruxolitinib. And we saw the results of the Phase III studies for each of these agents, and they were really quite exciting. The punchline for both of these studies is that they demonstrated that when you give two drugs as opposed to just one, the amount of patients that have a significant reduction in their spleen is doubled than when you give ruxolitinib in it by itself. So, for some of our patients that is a really meaningful number. You know, if you’re a patient that suffers from a big spleen, knowing that there’s a possibility of having two drugs that you can take to really shrink that spleen in a significant way, I think is very, very promising. On the symptom front, taking two medicines versus one medicine really didn’t seem to make a huge difference. I think we can analyze this in two different ways.  

We can see the negative or the positive side of this. So, on the negative side, well, it’s too bad that, you know, added medication didn’t help patients feel better. But on the upside, it’s also good that taking two medicines didn’t make people feel worse. Sometimes you can think of, you know, if you’re taking more medication, maybe you will feel worse. So, the jury is kind of still add on the significance of those results.

But regardless, without getting into too much detail about these studies, I think it’s really exciting for myelofibrosis patients to know that there are two agents that are in Phase III testing. That means that the next step is really consideration of FDA approval. So, when medications go through clinical trials, they go through earlier phase studies, Phase I, Phase II, and then finally they get to Phase III. A lot of work and effort has gone into these two compounds to try to get them to FDA approval. So, we’ll wait and see if in the next year or so we have new agents for the treatment of MF. 

In addition to these two, which of course are the most advanced, there really are a variety of other agents that are being tested. Those, for the most part, are still in Phase II testing. And similarly to the ones I mentioned before, most of the compounds, the way that they go into trials is first they start out showing that they’re safe by themselves, and then they get added to a JAK inhibitor.

So, far, because ruxolitinib has been the one that we’ve had around for the longest, most of these studies are being tested in combination with ruxolitinib. But we start to hear rumblings from clinical trials that perhaps some of the newer trials will consider using other JAK inhibitors as combination partners, which is a natural evolution. So, to name a few other agents, we have drugs like selinexor (Xpovio), and navtemadlin we have a PIM kinase inhibitor, a lysyl oxidase inhibitor, an LSD1 inhibitor, the list is long of all these different agents.  

Preliminarily, at least from the data we’ve seen from all of these compounds, I think there’s a lot of room for excitement. We see that combining these drugs together, the new agent plus the ruxolitinib, leads to a significant reduction in the spleen. And in some of these agents, we’re starting to see other endpoints. So, in addition to just looking at can we make patients feel better and can we shrink their spleens?

We’re starting to look at other things such as when we add these medications, do we see a reduction in the scarring or the fibrosis in the bone marrow? Do we see a decrease in the cells that have the mutation? Do we see the patients live longer? All of those things are endpoints in our studies that we really haven’t tested before. So, I think the field really will produce a lot of exciting data in the next couple of years.  

Katherine:

You mentioned clinical trials, and we will talk about those in a few moments, but are there innovations in technology that are accelerating myelofibrosis research?  

Dr. Hobbs:

So, the most obvious way to answer that question is simply that it’s much easier to diagnose myelofibrosis now, thanks to the ability to do genetic testing now much more easily than before. So, I think that previously, you know, getting JAK2 testing or testing for the other mutations was not as simple or would take a long time for the results to come back.  

Now, you know, I see even in the smallest of practices, ordering not just the JAK2 gene, but ordering what many of us do, which is like a panel of genes, where you test for a lot of the genes at the same time, has become almost commonplace. So, that’s really a meaningful advance in that it’s a technology that’s available and it’s no longer as prohibitively expensive as it was before.  

That doesn’t mean that some patients don’t end up getting charged in ways that doesn’t make any sense anymore, but that’s a conversation for another time. But I think just having the ability to make those diagnoses because of how easy it is now to test for these mutations is really very meaningful. Outside of that, I mean, I would say that along with the improvement in the knowledge of what mutations patients have with myelofibrosis, we definitely have deeper ways of analyzing what genes are being expressed and in what cells they’re being expressed to really understand, you know, when do patients first get those mutations and how do those mutations change over time.

So, we’re really diving deep into the actual biology of the bone marrow and there’s some studies that have demonstrated that patients may even have the JAK-2 mutation in utero, which is really, really fascinating. So, definitely a lot more understanding of the actual biology of how these diseases happen.   

Expert Perspective | Disease Modification in Polycythemia Vera

Expert Perspective | Disease Modification in Polycythemia Vera from Patient Empowerment Network on Vimeo.

Is it possible to change the course of disease in polycythemia vera patients? MPN specialist and researcher Dr. Lucia Masarova shares an overview of the research in disease modification, discussing her work as the coauthor in an article entitled Moving Towards Disease Modification in Polycythemia Vera, recently published in the journal Blood.

Dr. Lucia Masarova is an MPN Specialist and Assistant Professor in the Department of Leukemia at The University of Texas MD Anderson Cancer Center. Learn more about Dr. Masarova

 

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Transcript:

Katherine Banwell:

Dr. Masarova, you are a coauthor in an article entitled Moving Towards Disease Modification in Polycythemia Vera, which was recently published in the journal Blood. Can you share some of the highlights of the article and what it means for PV patients? 

Dr. Lucia Masarova:

Disease modification in polycythemia vera. I’m so excited finally being talking about this because we’ve been really, really, really so hungry for this term, although we still don’t know what it means.  

So, we group together with lots of experts in the myeloproliferative neoplasm field and try to brainstorm and put together, “What does it actually mean?” And to me, and to all of us, it was to offer our patients the normal or not-normal lifespan without the consequences of the disease that they face. Because we historically divided polycythemia vera into high-risk or low-risk disease based on the age or previous history of thrombosis or clotting complications.  

However, there is a huge area of patients that wouldn’t have either, and still suffer tremendously a bad quality of life, and ultimately also face the disease progression to myelofibrosis, which is the most actual complication of long-term polycythemia vera duration.  

So, the concept of disease modification would be to actually prevent the complications to even occur. To allow our patient to live free of having the fear of living with a thrombosis or clotting complication or ultimately progress into myelofibrosis. We have to learn how to get there. What are the relevant endpoints of tools for us to utilize to really understand? We have learned a lot from seeing what we call molecular remissions, or control of the JAK2 mutation with certain medications, for example, interferons or latest ruxolitinib (Jakafi), the JAK inhibition, where the decrease of the allele burden, which represents the disease, is correlated with better outcome.  

So, that is something that we have to be learning down the road with a longer follow-up. But that basically triggered us to focus on what can we do better? How do we prevent this from even happening rather than only controlling the historically main points of the disease which are presented by the blood counts symptoms and display? And where we are actually failing quite a lot of patients because despite them having a control count, they still don’t have a happy life, and lots of them suffer and complain.  

So, this is something to be learned, and this is opening the disease modification not only for polycythemia vera, but also for all patients with myeloproliferative neoplasms, which have a little bit of a different feeling in the whole myeloid malignancies field. Because it is a very long disease, and it could evolve and change, and only now we starting to understand what does actually happen there. Why some people could live for 30 years, and never face any consequences, and the others would progress very fast? 

So, disease modification would normally allow us to develop and learn more tools and better biomarkers, but also focus on drugs that are really needed to help with these long-term outcomes of our patients.  

Choosing a Myelofibrosis Treatment Plan | Key Questions to Ask

Choosing a Myelofibrosis Treatment Plan | Key Questions to Ask from Patient Empowerment Network on Vimeo.

When considering therapy for myelofibrosis, where do you start? Dr. Lucia Masarova shares advice and key questions to ask your provider when making myelofibrosis treatment decisions.

Dr. Lucia Masarova is an MPN Specialist and Assistant Professor in the Department of Leukemia at The University of Texas MD Anderson Cancer Center. Learn more about Dr. Masarova.

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Transcript:

Katherine Banwell:

When considering treatment options, what key questions should patients ask about their proposed treatment plan? 

Dr. Lucia Masarova:

What’s the goal of my therapy? That is one of the most important things to know. Patients don’t even know how long they have to be on the medicines. What to do and how does it look when the medicine is still working? What do I need to be looking for in this medicine? And then what are we going to do if it fails? And what does it actually mean when it fails? What is the schedule? How burdensome the treatment is? How often do I have to come?  

How often and what do I have to pay? Because the financial burden we have to really, really face the truth. It is very, very, very significant and somebody living with this disease predicates. It’s something we cannot take lightly, and we really have to combine our efforts and help with that. There are fantastic patient support organizations, but is not well-known, and is still in the rare – in rarer field. So, there’s more effort that we do. 

When do I need more help? Where to be referred to more experts? What is the role of stem cell transplantations, if ever? So, those are really the key things.  

Where do I find reliable resources to learn about my treatment, to learn about the disease? How do I connect with people from the same community? It is a disease with a lower age in a lot of circumstances and really facing this disease in the 30s or 40s or 50s is a really challenging thing. Although we have more and more medications currently, we really do have now to start thinking about their durability, about the safety for long-term, about their assessments for not performing, and where do we place the ultimate cure for stem cell transplants?  

And how do we make it actually happen in more and more eligible patients? Because we have to face the truth. It is still not utilized to where it belongs. Patients are not being referred. 

Patients are not being transplanted. And they may change with novel therapies. But we have to really consider all of our tools to offer the longest life span and to prevent all the disease trouble that comes with living with MPNs.   

Katherine Banwell:

When it comes to clinical trials, where do they fit in in choosing treatment? 

Dr. Lucia Masarova:

For me, it’s number one., and always number one.  

That’s just the academic centers which are dedicated and focused on developing better and novel and up front and just tailored and customized drugs. But I know that the life is out there and it’s a little bit more challenging for everybody to deal with such a rare disease.  

I would definitely say any patient that does not respond to current therapy in terms of uncontrolled symptoms or spleen, or other concerns should be referred and evaluated for participation in clinical trials. It is the only way we could understand what is driving that this is not responding and how could we help the best?   

For patients with myelofibrosis, which is the most aggressive myeloproliferative neoplasm, I would definitely put it in. If they are not doing well on number  one, JAK inhibitor, whatever is being used, they should be highly encouraged to be referred to centers and evaluated for clinical trials. 

We have been developing as others and own strategies to potentiate the benefit and efficacy of the current treatments, as well as agents in what we call salvage or refractory setting.  

However, I cannot emphasize enough to really focus on the first track that providers choose for their patients and utilize it to the best ability to avoid frequent or quick switching. Because in a salvage or  refractory setting we cannot offer the same benefit we could offer upfront. We are pushing the disease, maybe being less responsive, maybe more refractory, if we don’t handle the medication we have currently on the table to the best ability.  

Those are excellent medications, fantastic drugs, but there are shortcomings in each and every one of them. And we could do better to really start thinking about what has happened with the medication, why is it failing the patient, and what else could we do? And that’s only possible in the clinical trial setting, especially in such a rare disease as myeloproliferative neoplasms are.   

Katherine Banwell:

Why is it important for patients to feel like they have a voice in their treatment options? 

Dr. Lucia Masarova:

Because it’s about the patients. I would say, as I always say to my patients, “Nobody’s a better advocate for you than you.” I really, really, really like working with patients. They are educated. They understand where to find resources. They’re not afraid to ask. That challenges all of my team and everybody to really be engaged. They know when to notify me. Not to be quiet when they need something. And really raise their voice when something doesn’t work.  

Patients know their bodies more than anybody can. And no data, no boxes, no books can ever tell me how it actually is. It’s not by chance we have two ears to listen and one mouth to talk.  

So, we have to really listen what the patient has to say and take all the abilities, the resources, the knowledge, the capabilities to really make the best thing for the patients, because it is ultimately and only about that.  

Understanding and Managing Common MPN Symptoms and Side Effects

Understanding and Managing Common MPN Symptoms and Side Effects from Patient Empowerment Network on Vimeo.

How can MPN symptoms and side effects be managed? Dr. Raajit Rampal discusses strategies for managing PV-related itching, fatigue, and other common issues MPN patients face. 

Dr. Raajit Rampal is a hematologist-oncologist specializing in the treatment of myeloproliferative neoplasms (MPNs) and leukemia at Memorial Sloan Kettering Cancer Center in New York City. Learn more about Dr. Rampal.
 
 

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Transcript:

Katherine Banwell:

Let’s talk about MPN symptoms and treatment side effects. Here’s a question we received from a viewer before the program. How common is peripheral neuropathy in primary myelofibrosis? 

And what is the best treatment for it? 

Dr. Raajit Rampal:

Well, by itself, it’s not a very common symptom of MF by itself. Can it be a symptom? Sure. But there are also a number of things that can cause peripheral neuropathy. So, I’m not sure there’s a best treatment.  

But what needs to be done is a thorough investigation. There can be a number of causes. It could be nerve injury. It could be a deficiency in vitamins like B12. There are a lot of things that could cause it. So, that type of a symptom needs to be thought of in a broad way in terms of diagnosis.  

Katherine Banwell:

Jeff sent in this question, :How could I manage the itching? Are there new treatments or strategies to live with itching?”  

Dr. Raajit Rampal:

Very common thing. And it’s an interesting thing explaining to when we teach our trainees about this symptom, we have to impress on them the fact that itching is not the itching that everybody else experiences. 

This is a very profoundly different symptom. It’s debilitating for so many people. I have patients who go to the Emergency Room for that. That’s how terrible it could be. There are a lot of things that could be tried. JAK inhibitors, in my experience, work very well for itching but not in everybody. We use sometimes antihistamines that can work well. Sometimes, antidepressants can work well, not because they’re treating depression but because of other properties that they have. And sometimes, UV light therapy can be useful tool here, too. A lot of patients swear by it. 

Katherine Banwell:

Another common side effect is fatigue. Do you have any advice for managing this symptom? 

Dr. Raajit Rampal:

Fatigue is the most common symptom across MPNs. And it is also one of the most difficult things to treat. Part of the issue is trying to figure out what does fatigue mean to the patient.  

When someone says they’re tired, does that mean they’re sleeping all of the time? Does that mean they don’t have get up and go? The first step is always understanding what does fatigue mean to the patient? And then, the second is trying to dissect that. In some cases, it’s related to anemia, in some cases, it’s not related to anemia and it’s just the disease itself.  

And in some cases, you have to think outside of the box about general medical issues like thyroid dysfunction that could be at play here. So, there isn’t one best fit. 

But the first test is always to dig deep. When someone says they have fatigue to dig deeper and try to figure out what is that really. 

Katherine Banwell:

What other common symptoms do you hear about from patients? And what can be done about those? 

Dr. Raajit Rampal:

There are a lot of different things. It’s a spectrum. So, I think that itching and fatigue are very common. Feeling full early is, that’s a big thing, particularly in myelofibrosis patients.  

Bone pain, that’s another big one, particularly in myelofibrosis. There is not one therapy that is best for all. I think the JAK inhibitors, certainly, benefit many of these symptoms. But they don’t benefit everybody and not to the extent that makes it tolerable for everybody. So, often times, we struggle with this and try a lot of different things. But, again, I think one of the things to always remember is we don’t always want to say that this must be because of the MPN. Sometimes, symptom is arising because of another medical condition that’s going on concurrently. 

What Are the Long-Term Effects of JAK Inhibitors?

What Are the Long-Term Effects of JAK Inhibitors? from Patient Empowerment Network on Vimeo.

MPN expert Dr. Gabriela Hobbs discusses what researchers know about the long-term safety of JAK inhibitors and options for patients if the treatment loses effectiveness over time.

Dr. Gabriela Hobbs is a hematology-oncology physician specializing in the care of patients with myeloproliferative neoplasms (MPN), chronic myeloid leukemia, and leukemia. Dr. Hobbs serves as clinical director of the adult leukemia service at Massachusetts General Hospital. Learn more about Dr. Hobbs.

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Transcript:

Katherine:

What are the long-term effects of JAK inhibitors? And what happens when JAK inhibitors are no longer effective? 

Dr. Hobbs:

Yeah. Great question. So, so far the patients that have been on JAK inhibitors for a long time don’t seem to have the development of additional toxicities that we didn’t know about.  

So, I’ll just comment on some of the things that we do know about. Weight gain is a common complaint that I have from patients, especially those that have polycythemia vera, because maybe they didn’t want to gain weight when they were put on a JAK inhibitor compared to the myelofibrosis patients who maybe had lost a lot of weight before being on a JAK inhibitor.  

There are certainly higher risk probably of developing infections with some of the JAK inhibitors. And we see, for example, shingles reactivation being a common one. And there’s the concern of development of skin cancers, which has been seen with some JAK inhibitors. But generally speaking, long-term use seems to be safe. That being said, ruxolitinib (Jakafi), which is the oldest one to be approved, has only been around since 2011, so we don’t have decades worth of experience to know.  

When JAK inhibitors stop working – to answer the second part of your question – until fairly recently we really didn’t have a whole lot to offer because there was only one JAK inhibitor. Now we have two others. We have fedratinib (Inrebic) and also pacritinib (Vonjo). And we know from the studies that have been done with both of these agents that some patients that lose response to Jakafi, meaning that their spleen starts to grow or their symptoms start to come back, can be treated with these other JAK inhibitors.  

And many patients will, again, have control of their spleen and symptoms. Now losing response to a JAK inhibitor can come in many different ways. And so, some patients may also develop signs of having leukemia or progression of their disease to leukemia. And, unfortunately, for those patients, being on another JAK inhibitor doesn’t make sense. So, those patients may need to receive other types of medications or a stem cell transplant. 

How Driver Mutation Research Is Advancing MPN Treatments

How Driver Mutation Research Is Advancing MPN Treatments from Patient Empowerment Network on Vimeo.

How do driver mutations affect MPN care? MPN researcher Dr. Gabriela Hobbs shares an update on what’s being learned about the JAK mutation and how researchers are working towards targeted therapy for MPNs.

Dr. Gabriela Hobbs is a hematology-oncology physician specializing in the care of patients with myeloproliferative neoplasms (MPN), chronic myeloid leukemia, and leukemia. Dr. Hobbs serves as clinical director of the adult leukemia service at Massachusetts General Hospital. Learn more about Dr. Hobbs.

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Transcript:

Katherine:

There have been huge developments in the last 10 to 15 years in the field of MPN. So, I’d like to dig a little deeper. We hear about the common driver mutations in MPNs like JAK2, CALR, and MPL. How are these being studied , and what is being discovered?  

Dr. Hobbs:

Yeah. So, it’s amazing how in the last 15 years really so much has been discovered. You know. The JAK2 mutation was first published out in 2005 and calreticulin in 2013. So, those are relatively recent discoveries. And I think a lot of efforts has been put into learning about what these mutations are doing and how they lead to disease. And so, we have the JAK inhibitors, which block the signaling through a pathway called JAK-STAT. And all of these mutations will activate that pathway within cells.  

And so, many of the approved drugs, for example, ruxolitinib (Jakafi), fedratinib (Inrebic), and pacritinib (Vonjo), work on blocking that pathway.  

But since then, we’ve also learned that there are other mutations and other pathways that are likely involved in the development of myeloproliferative neoplasms and also their progression. And so, what we’re seeing now is that many of the clinical trials that are being conducted don’t just target the JAK-STAT pathway or the pathway that’s influenced by these main mutations.  

But also block other pathways to try to really block all the variant expression of signaling in the myeloproliferative neoplasms. And so, we’re trying to attack it by many different angles.  

Katherine:

Yeah. Is there a possibility of specific targeted therapies at MPNs similar to those in AML such as FLT3 inhibitors? 

Dr. Hobbs:

Absolutely. So, similarly to AML, we know that we have mutations in similar types of genes called tyrosine kinases. So, these are enzymes that are turned on and always active. And so, I think there is definitely hope that we can develop some targeted agents. For example, ruxolitinib or the other JAK inhibitors are similar. They’re tyrosine kinase inhibitors where they block an enzyme, specifically the JAK2 enzyme.  

But I think that we can definitely do better and develop more specific inhibitors, for example, a molecule that just blocks the JAK2 mutation and not just every JAK2 molecule in every cell. Similarly to AML, there are mutations, for example, in enzymes called IDH.  

And we have IDH inhibitors for AML. And there are some studies that are using IDH inhibitors for MPN. So, I think we’re going to continue to see more targeted therapies specific to the mutations that occur in MPN. 

Expert Perspective | Promising MPN Research

Expert Perspective | Promising MPN Research from Patient Empowerment Network on Vimeo.

What’s the latest in promising MPN research news? Dr. Angela Fleischman shares an update about treatment research and discusses the importance of clinical trial participation.

Dr. Angela Fleischman is a physician scientist and assistant professor in the Department of Medicine at the University of California, Irvine. Learn more about Dr. Fleischman.

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Transcript:

Dr. Fleischman:

My name is Angela Fleischman. I’m what’s called a physician scientist, meaning, I do research as well as see patients, and my focus for my entire career thus far has been on myeloproliferative neoplasms, specifically their role of inflammation in MPN. And I am at the University of California, Irvine in Southern California. So, nice to be here today. 

Katherine:

Well, thank you so much for joining us and taking the time. Let’s talk about the latest developments in the field. What MPN clinical trials are you excited about right now? 

Dr. Fleischman:

So, I would say, there’s a lot of new clinical trials in the field for myelofibrosis, which is the most severe form of myeloproliferative neoplasm. 

There tend to be more clinical trials because that’s a patient population in – I don’t want to say in more need, but they do have more need in terms of necessitating better treatments. 

Drugs that are quite far along in clinical trials – and in order for a drug to make it to market, one needs to go through multiple clinical trials to demonstrate the safety, as well as efficacy. Things like a BET inhibitor are very, very promising in moving forward in clinical trials. Other medications for other diseases, such as polycythemia vera, not anymore in clinical trials, but excitingly, newly FDA-approved, was ropeginterferon (Besremi) for polycythemia vera. 

So, that’s a real exciting development for polycythemia vera patients. 

And now, we have – outside of the context of clinical trials, because I want to talk about what’s actually available to patients now, we now have three JAK inhibitors available for myelofibrosis patients. And really, since 2011, we had only had one, and then, more recently, a second JAK inhibitor, but now, we have three. So, now we’re moving into an era where we can tailor a specific JAK inhibitor for a specific myelofibrosis patient, depending on what their particular needs are. So, I think that that’s very promising. And then, there are lots of clinical trials combining JAK inhibitors with new drugs. 

Katherine:

What do you want to leave MPN patients with, relating to clinical trial participation? 

Dr. Fleischman:

I would say that MPN patients today are the key to our future treatments. 

Without participation in clinical trials today, there’s going to be no new drugs for myeloproliferative neoplasms. They’re just not going to appear. We need to test them in patients before them actually coming to market, and before really knowing whether they work or not. So, I would say that the MPN patients today are the key to the future of MPN treatments.  

What Patients Should Know About Developing MPN Treatments and Research

What Patients Should Know About Developing MPN Treatments and Research from Patient Empowerment Network on Vimeo.

MPN expert Dr. Gabriela Hobbs provides an update on developments in myeloproliferative neoplasm (MPN) treatment and research. Dr. Hobbs explains how clinical trials and global research collaborations advance MPN care.

Dr. Gabriela Hobbs is a hematology-oncology physician specializing in the care of patients with myeloproliferative neoplasms (MPN), chronic myeloid leukemia and leukemia. Dr. Hobbs serves as clinical director of the adult leukemia service at Massachusetts General Hospital. Learn more about Dr. Gaby Hobbs.

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Transcript:

Katherine:

Hello and welcome. I’m Katherine Banwell, your host for today’s program. Today we’re going to discuss the advancements in MPN research through clinical trials. Before we get into the discussion, please remember that this program is not a substitute for seeking medical advice. Please refer to your healthcare team about what might be best for you. Well, let’s meet our guest today. Joining me is Dr. Gabby Hobbs. Dr. Hobbs, welcome. Would you please introduce yourself? 

Dr. Hobbs:

Hi, how are you? Thank you so much for having me. My name is Gabby Hobbs. I’m the clinical director of the Adult Leukemia Service at the Massachusetts General Hospital in Boston. And I dedicate my clinical time and research efforts to the care of patients with Myeloproliferative Neoplasms.  

Katherine:

Thank you so much for taking the time to join us today.  

Dr. Hobbs:

Thank you.  

Katherine:

I’d like to start by discussing your role as an MPN researcher. You’re on the front lines for advancements in the field. What led you to there and why is it so important to you?  

Dr. Hobbs:

Many things in my life led me to becoming an MPN clinician. First, I wanted to be a clinical investigator since I was very little, and I read a Louis Pasteur book about – you know. And I was fascinated by the fact that you could be both a scientist and a clinician. And after that, I had phenomenal teachers and mentors. And I was really always drawn to patients with hematologic malignancies. I thought that that interaction was very intense and intimate.  

And I was honored to be a part of that interaction. And then from a research perspective and from a scientific perspective, I very clearly remember seeing when the first targeted therapy, Imatinib, was approved when I was an undergrad. And I just thought that was the most fascinating thing. And so, I’ve basically continued to feel that way as I’ve gone through my training and I’m thrilled to be able to have actually become an MPN clinician so many years later.  

Katherine:

With the American Society of Hematology or ASH meeting taking place this month, it demonstrates how researchers work together around the world to advance care.   

Can you share with the audience how this collaboration works?  

Dr. Hobbs:

Yeah. So, the American Society of Hematology meeting – or the ASH meeting – is really one of my favorite events of the year.  

And it really highlights what you said. It is such a positive environment, and it’s so exciting to use that opportunity to talk to my collaborators from across the globe. And I really think that that’s where the scientific community shines because really all of us are actually trying to figure out how to work together and overcome sometimes a lot of obstacles – bureaucratic obstacles, regulatory obstacles – to make sure that we can share data, do it the right way. But really we always have one thing in mind.  

And that is to be able to advance the care that we give our patients. And so, that collaboration and really that collaborative environment is always very positive. And I always come back home very energized from that. And then just seeing all my colleagues presenting all the wonderful things that they are working on and getting updates on their research is just an exciting environment.   

Katherine:

In your view, why is it essential to present and share data at these larger conferences like ASH? 

 Dr. Hobbs:

So, for many different reasons. I mean, there are many different ways of presenting data that can be done through just publishing a paper. But the nice thing about conferences – and especially large conferences – is that you really get an opportunity to present work in progress. And some of these research projects may not end up turning into bigger projects or they may not become bigger trials. But all of them have at least an opportunity to learn something from them, whether or not they worked or they didn’t work.  

Oftentimes when things are published in journals, especially the high-impact journals, we are seeing trials that had positive results. But sometimes we don’t see those smaller trials that never went anywhere. And so, having a forum when we can discuss work that’s ongoing, discuss about projects that are maybe having issues, all those things actually really help us to change our research questions or develop new research questions based on what’s working and also really what’s not working. And so, having this large forum to present all of that data, I think, is really, really important to helping us design future clinical trials and projects.  

Katherine:

Yeah. Well, this is a great way to begin our clinical trial discussion, Dr. Hobbs. This research all requires MPN patients to participate in clinical trials. So, what should be considered when deciding whether to join a trial? 

Dr. Hobbs:

What a great question. Many things need to be considered when joining a trial. And I think some patients are really eager to join a trial, and they just need to be aware that they may be either too healthy, or they may have other things going on that may not make them eligible.  

And that’s okay. There are actually many ways of participating in research, even if it’s not a clinical trial that requires a medicine. For example, we often can send patients to what’s called a tissue bank where they have patients just give a sample of blood.  

So, patients can participate in research in many different ways. When considering whether or not a patient should enroll in an actual clinical trial with a new medicine, I think it’s really important for the patients to be informed and to not be afraid to ask questions. First, what is a clinical trial? Second, what will this trial involve? Is this a drug that has never been given to people before, or is this a drug that has already undergone many different clinical trials? And this trial that’s being offered is a Phase III trial where the purpose of the study is to get the drug to be approved.  

So, I think learning about the risk of the study, how it’s been utilized. And also the other more practical things. What is the time commitment of this clinical trial? How often are you going to have to be going to the office because of the clinical trial? Because there’s certainly a big investment in the part of the patients in terms of their time. Participating in a clinical trial most of the time requires more time than not participating in a clinical trial. That’s not always the case. There are some studies that definitely don’t require that many visits.  

But most clinical trials will require at least something extra from the patient. And I think it’s really important to ask about that, to read the consent that’s given to the patients. Oftentimes these consents are very long.  

And so, they can be overwhelming. I personally find them overwhelming. And I review a lot of those consents. And so, I think taking a minute to really ask those questions, speaking to the research staff, and getting the clarification on that is really important.  

Like you said, it is impossible to approve new therapies and improve the care that we offer our patients without patients participating in the clinical trial. But that doesn’t mean that absolutely every single patient needs to participate in a clinical trial if it just doesn’t make sense for them. [14:17]  

Katherine:

There have been huge developments in the last 10 to 15 years in the field of MPN. So, I’d like to dig a little deeper. We hear about the common driver mutations in MPNs like JAK2, CALR, and MPL. How are these being studied , and what is being discovered? 

Dr. Hobbs:

Yeah. So, it’s amazing how in the last 15 years really so much has been discovered. You know. The JAK2 mutation was first published out in 2005 and calreticulin in 2013. So, those are relatively recent discoveries. And I think a lot of efforts has been put into learning about what these mutations are doing and how they lead to disease. And so, we have the JAK inhibitors, which block the signaling through a pathway called JAK-STAT. And all of these mutations will activate that pathway within cells.  

And so, many of the approved drugs, for example, ruxolitinib (Jakafi), fedratinib (Inrebic), and pacritinib (Vonjo), work on blocking that pathway.  

But since then we’ve also learned that there are other mutations and other pathways that are likely involved in the development of myeloproliferative neoplasms and also their progression. And so, what we’re seeing now is that many of the clinical trials that are being conducted don’t just target the JAK-STAT pathway or the pathway that’s influenced by these main mutations.  

But also block other pathways to try to really block all the variant expression of signaling in the myeloproliferative neoplasms. And so, we’re trying to attack it by many different angles.  

Katherine:

Yeah. Is there a possibility of specific targeted therapies at MPNs similar to those in AML such as FLT3 inhibitors? 

Dr. Hobbs:

Absolutely. So, similarly to AML, we know that we have mutations in similar types of genes called tyrosine kinases. So, these are enzymes that are turned on and always active. And so, I think there is definitely hope that we can develop some targeted agents. For example, ruxolitinib or the other JAK inhibitors are similar. They’re tyrosine kinase inhibitors where they block an enzyme, specifically the JAK2 enzyme.  

But I think that we can definitely do better and develop more specific inhibitors, for example, a molecule that just blocks the JAK2 mutation and not just every JAK2 molecule in every cell. Similarly to AML, there are mutations, for example, in enzymes called IDH.  

And we have IDH inhibitors for AML. And there are some studies that are using IDH inhibitors for MPN. So, I think we’re going to continue to see more targeted therapies specific to the mutations that occur in MPN.  

Katherine:

Yeah. Let’s talk about ET for a moment. Is there any research being done to help better manage this condition? 

Dr. Hobbs:

Yeah. I would say that of the three MPNs, ET is certainly the one that has the least amount of drugs that are being currently studied for this group. But that doesn’t mean that there isn’t any research. Ropeginterferon (Besremi), which was recently approved in polycythemia vera, is now being studied in essential thrombocythemia.  

So, I would expect in the next couple of years, if those trials are successful, to have ropeginterferon as a therapy to offer patients. There is also a clinical trial that we have at our site.  

We’re using ruxolitinib or Jakafi for patients with ET that have symptoms of their disease to see if it can help them in the same way that it can help PV or myelofibrosis patients. So, there’s definitely some research going on in ET. But probably less than for PV and myelofibrosis.  

Katherine:

Mm-hmm. While ET is typically well-managed, what patient type might benefit from joining a trial? 

Dr. Hobbs:

It really depends on what the patient is experiencing. I think there are some patients that really are very asymptomatic and can expect to have an excellent outcome with their disease. But they can also participate in research, for example, by participating in a tissue bank and offering a sample of their blood or if they have a bone marrow by offering some bone marrow if there’s extra. Because that can really help to understand the disease biology, if a patient is going to progress from ET to myelofibrosis.  

So, we can learn a lot from that. But then there are maybe some ET patients that need to be on a medication to reduce their blood counts or a cytoreductive agent.  

And that’s a patient that could ask about participation in a clinical trial. For example, the ropeginterferon study or, like I mentioned, there may be some patients that maybe are already on a medication and their blood counts aren’t well controlled on the first drug that was used.  

So, before considering switching to a second-line agent or a second medication, that could inquire with their clinician if there’s a clinical trial available for second-line use. Or those patients that have a lot of symptoms with ET, they could potentially be eligible for a study that addresses just symptoms.  

Katherine:

Right. That’s really good news. I’m glad you talked about that.  

Dr. Hobbs:

Mm-hmm.  

Katherine:

There was recently an interferon approved for use in patients with PV. What other studies are showing promise for patients with PV?  

Dr. Hobbs:

Yeah. So, we as a community, there’s been a lot of excitement about this new interferon that was approved, the ropeginterferon study. And there are still some ongoing studies utilizing ropeginterferon to see if we can use it differently. Because currently the way that that drug is approved is that it has to be titrated up very slowly to get to the maximum dose. So, that’s something that is still ongoing. In addition, there’s a new drug that’s being studied called Rusfertide (PTG-300) from a company called Protagonist. And this drug has been very interesting. It acts through iron metabolism.   

And so far in preliminary results, it has shown that a lot of the participants that receive this medication no longer need phlebotomy. And I think what’s exciting about this is that phlebotomy is a very archaic way of treating patients.  

And I hope that we can stop utilizing it. So, it’s nice to have a compound that’s specifically asking that question. And the other thing to keep in mind is that this drug has been used in combination with other drugs, which is really reflective of how participants or patients show up to clinics.  

Some patients are not going to be on any medications. Some patients may be on hydroxyurea.  

Some patients may be on an interferon. Some patients may be on Jakafi. And these trials allow participants to be on a variety of different medications. So, that’s an exciting new compound.  

Katherine:

What about myelofibrosis, Dr. Hobbs? What advances are being made in the care of patients with this more advanced MPN?  

Dr. Hobbs:

Yeah. So, in myelofibrosis, I would say it is almost difficult to keep track of how many clinical trials are currently open. So, in 2011, we had ruxolitinib approved, or Jakafi. That was the first JAK inhibitor. Since then we’ve had two more JAK inhibitors approved, fedratinib and most recently pacritinib. And we’re currently awaiting the fourth JAK inhibitor to be approved, and that’s called momelotinib.   

And in addition to the JAK inhibitors, there are lots of other clinical trials underway right now that are either alone – a drug by itself or a drug in combination with ruxolitinib.  

So, there are several Phase III studies. And the reason why that’s important is that after Phase III we usually see a drug approval. So, we can expect, hopefully in the next couple of years, to see many more drugs available on the market to treat patients with myelofibrosis. Some of those include agents that block different pathways within a cell. And that includes a drug called parsaclisib. There’s a drug called pelabresib, which is a BET inhibitor.  

There’s another drug called navitoclax, which is a cousin of venetoclax (Venclexta), which is a drug that we’ve been using a lot in leukemia. So, there’s lots of different drugs that are being used in combination with Ruxolitinib. There’s also a drug called luspatercept (Reblozyl) that’s also been approved for myelodysplastic syndromes. And I suspect that that’ll be approved as well to help patients with anemia. So, really, there’s lots of drugs that are being studied right now. And I think the question that we’re all asking is, well, how are we going to use all of these different drugs? So, I look forward to seeing the results of those studies.  

Katherine:

Mm-hmm. Will some drugs work better for some patients and others not? 

Dr. Hobbs:

That is such a good question. And so, what I’m hoping to see is exactly that. I’m hoping to see that for patients, for example with anemia, perhaps we’re going to be using luspatercept and momelotinib. Perhaps we’re going to see that patients with certain mutations may respond better to certain medications like the BET inhibitors or navitoclax or the PI3 kinase inhibitor, parsaclisib. But as of now, we don’t have enough information.  

We haven’t seen enough results of these studies to start to be able to know, you know, what is the patient that’s going to do better with two drugs versus one drug? And so, I think that over the next couple of years we’re going to start to have answers to those questions.  

Katherine:

Yeah. I’d like to get specific about your research. What are you excited about right now? 

Dr. Hobbs:

A few different things. There’s a clinical trial that I’ve been leading for several years now that got somewhat delayed due to the pandemic that’s utilizing ruxolitinib before, during, and after transplantation for patients with Myelofibrosis.  

And that study is hopefully going to finish accrual in the next couple of months. So, I’m excited to see the results of that study. That study was presented at ASH of last year, the interim results of that study. And so far, we’ve seen exciting results. Patients have done well with transplant while receiving ruxolitinib.  

We’ve seen that patients that have undergone transplant and have received ruxolitinib have had very low rates of a complication of transplant called graft-versus-host disease.   

And that’s been very exciting, because we know that graft-versus-host disease is really very difficult to deal with after transplant. It can really impact quality of life. And so, that’s been exciting to see that we can help our patients to better tolerate this difficult treatment. On the complete opposite end of the spectrum, we’re treating patients that have low-risk essential thrombocythemia and polycythemia vera with ruxolitinib also to see if their quality of life can improve.  

We know that patients with ET and PV live with a lot of symptoms. And often times patients that are considered low-risk can still have a lot of symptoms. And therapies haven’t really specifically been studied just to improve symptoms. Really, therapies are usually used to reduce the risk of having blood clots.  

Katherine:

What about checkpoint inhibitors? You’ve done a study about that? Or it’s ongoing? 

Dr. Hobbs:

Yes. Great question. So, a few years ago we utilized a checkpoint inhibitor called Pembrolizumab for patients with advanced myeloproliferative neoplasms. And that study was open at Mass General and also at Mount Sinai. We were worried that it wouldn’t be well tolerated. But it was actually very well tolerated. But unfortunately patients didn’t have a response. And a group at MD Anderson utilized another checkpoint inhibitor, Nivolumab, for these patients. And similarly they also didn’t see a response.  

So, that was disappointing. However, I do think that there is a role for immunotherapy in patients with MPNs. I think that we probably need to think about utilizing the checkpoint inhibitors maybe earlier or maybe in combination with other agents. This has been done, for example, in solid tumors where two checkpoint inhibitors are sometimes utilized together. So, I think their area of investigation is still worth pursuing even though that was a disappointing result.  

Katherine:

Yeah. Yeah. Any other research that’s going on that you’re doing? 

Dr. Hobbs:

Yeah. We are looking forward to opening some clinical trials using different drugs in combination with ruxolitinib to offer different treatments to our patients up front. And so, instead of offering just single-agent JAK inhibitor, we can combine that with one of the new agents. And so, I’m looking forward to seeing how that’s going to work for my patients and to be able to offer them another treatment. I’m also thinking of developing a clinical trial for use in patients that have clonal hematopoiesis.  

So, patients that have this entity called CHIP where they have a JAK2 mutation but maybe don’t have overt disease. We know that they have a high rate of transformation to an actual MPN. So, we’re working to develop clinical trials for those patients with the hope of maybe preventing the MPN from ever happening. 

Katherine:

That’s great. We have some questions from the audience that were sent in prior to the program. Carl asks, “Are MPNs inherited? And why does one sibling develop an MPN and the other does not?”  

Dr. Hobbs:

Great question. So, historically, we’ve always said MPNs are very rarely inherited. Now that we’re able to test for JAK2 mutations more commonly, we have, I think over the last decades, probably found that there are more families where the MPNs kind of run in the family.  

Katherine:

Mm-hmm.  

Dr. Hobbs:

Generally speaking, it’s very rare for MPNs to run in the family. I would say less than 10 percent of the case. And this is why a sibling can have an MPN and one doesn’t, even if they’re identical twins.  

Katherine:

Is research being done to learn more about who may be at risk for developing an MPN? 

Dr. Hobbs:

So, over the list, there’s been a lot of attention placed on this entity called clonal hematopoiesis of indeterminate potential. And through those types of investigations, we’ve learned that people can actually live with a JAK2 mutation for many years, even decades, before they develop a myeloproliferative neoplasm. And so, indirectly, I think that type of research will help us understand why some people get the JAK2 mutation to begin with and what else needs to happen in a patient’s life for that person to develop an MPN.  

Because clearly there are many more people walking around with a JAK2 mutation than there are people with an actual MPN. So, there’s something else other than that JAK2 mutation that predisposes patients to then develop an MPN.  

Katherine:

Angela has another question. “What are the long-term effects of JAK inhibitors? And what happens when JAK inhibitors are no longer effective?” 

Dr. Hobbs:

Yeah. Great question. So, so far the patients that have been on JAK inhibitors for a long time don’t seem to have the development of additional toxicities that we didn’t know about. So, I’ll just comment on some of the things that we do know about. Weight gain is a common complaint that I have from patients, especially those that have polycythemia vera, because maybe they didn’t want to gain weight when they were put on a JAK inhibitor compared to the myelofibrosis patients who maybe had lost a lot of weight before being on a JAK inhibitor.  

There are certainly higher risk probably of developing infections with some of the JAK inhibitors. And we see, for example, shingles reactivation being a common one. And there’s the concern of development of skin cancers, which has been seen with some JAK inhibitors. But generally speaking, long-term use seems to be safe. That being said, ruxolitinib, which is the oldest one to be approved, has only been around since 2011, so we don’t have decades worth of experience to know.   

When JAK inhibitors stop working – to answer the second part of your question – until fairly recently we really didn’t have a whole lot to offer because there was only one JAK inhibitor. Now we have two others. We have fedratinib and also pacritinib. And we know from the studies that have been done with both of these agents that some patients that lose response to Jakafi, meaning that their spleen starts to grow or their symptoms start to come back, can be treated with these other JAK inhibitors.   

And many patients will, again, have control of their spleen and symptoms. Now losing response to a JAK inhibitor can come in many different ways. And so, some patients may also develop signs of having leukemia or progression of their disease to leukemia. And, unfortunately, for those patients, being on another JAK inhibitor doesn’t make sense. So, those patients may need to receive other types of medications or a stem cell transplant.   

Katherine:

Mm-hmm. Gary has two questions for you. The first is, “How useful is having a genetic panel done? Should all patients get molecular or genetic testing?” 

Dr. Hobbs:

Great question. And I think that it is very important to have genetic testing.  

And genetic testing involves more than just testing the JAK2 mutation. So, we know that the JAK2 mutation is the most common mutation in patients with MPN. But that being said, there are other mutations that also occur such as the calreticulin mutation and the MPL mutation. And so, I think having genetic testing that at least tests for those three mutations is very important so that we can actually help a patient know that they have an MPN. In addition to those three main mutations, many clinicians now have access to what’s called extended next-generation sequencing, where there’s a panel that tests for many different genes at the same time and can test for a variety of other mutations.  

And this is particularly relevant for patients with myelofibrosis. As we know that having other mutations, like, for example, mutations in IDH or ASXL1 and others, can increase the risk of that disease in terms of its risk of transforming to leukemia or how long a patient may live with their myelofibrosis. 

And so, I do recommend having extended next-generation sequencing done at least at diagnosis.  

When I generally think about repeating that, if there’s something that looks like it’s changing within the patient’s disease, to be honest, also on the flipside of that argument, sometimes this next-generation sequencing will mostly contribute to adding anxiety and will not necessarily directly impact how a patient is treated. And this is particularly true in patients with PV and ET, where we’ll sometimes order these tests, and we get a bunch of mutations back, but we don’t know what to do with that information yet.   

And so, as a researcher – not a clinician – as a researcher, I think it’s very important to have that information so that we can then do studies and understand the patterns of mutations and how that affects outcome. But as a clinician, and you as a patient, you need to really be aware of how that’s going to impact the patient in front of you and how that may impact you as a patient. Do you want to know if you have these mutations if nothing can be done about it? So, I would say, take a moment to reflect upon what I said and also to ask your clinician, how is this information going to help me? Do I need to have this information?  

Maybe you want to have it done so that it’s in your record. But maybe you don’t necessarily want to know those results. And everybody’s very different. And I think it’s absolutely wonderful to talk to my patients about all the information. But there may be some patients that really are just, like, do the test but don’t tell me the results, because I know that I’m just going to be very anxious knowing that I have something that I can’t do anything about. So, just take a minute to talk about it with your doctors. I think that’s really important.  

Katherine:

Yeah. Yeah. Here’s Gary’s second question. “Is allele burden a key predictor of progression?” And before you answer that, Dr. Hobbs, what does “allele burden” mean, and how does it impact progression? 

Dr. Hobbs:

Great questions. And I hope that in the next couple years I have a much better answer for you. So, maybe I’ll come back again and maybe we can talk about this again. So, allele burden – just simply put – is basically, like, how many of the stem cells in your bone marrow have that JAK2 mutation. And that’s a concept that’s not obvious. So, not all of a patient’s blood with an MPN has that JAK2 mutation. There are some stem cells that have the JAK2 mutation and produce JAK2-mutated blood. And then there are some stem cells that are normal that just make normal blood and don’t have a JAK2 mutation.  

And so, we can measure, what is a proportion of cells in the blood that has that JAK2 mutation? Now the next question should be very obvious and straightforward. But it really is not. So, what do we do with allele burden, and how do we measure that, and what does it mean if the allele burden goes up or it goes down? At this moment, we don’t necessarily know that. There have been some studies showing that maybe higher JAK2 mutation burden is maybe associated with progression or more with PV as opposed to ET.  

And we’d all like to think that lowering that JAK2 mutation level or that JAK2 allele burden has to be good and maybe will decrease progression or improve survival. We haven’t seen that yet. And so, I think we’re all really waiting to see, what does it mean to lower that JAK2 allele burden? And then how often should we be measuring that? But right now we really don’t know.  

Katherine:

Yeah. One more question for you. This one from Joseph. “I have PV and had adverse side effects from peginterferon alfa-2a (Pegasys). Is it likely that similar side effects would be experienced with Besremi?” 

Dr. Hobbs:

Good question. It’s hard to know. And it really depends on the severity of the side effects that you had and the type of side effect that you had. In my experience, ropeginterferon or Besremii is very well-tolerated compared to the other interferons that were available. But if you really had a severe side effect it may be difficult to consider trying it. But it’s worth considering it. I’ve definitely had patients that have gone from Pegasys to ropeginterferon without any difficulty. But just because you had a bad side effect to one doesn’t mean that you’ll have a bad side effect to the other.  

Katherine:

This is from Paul who lives in the United Kingdom. “How important is it to see an MPN specialist rather than a general hematologist? Right now I’m currently seeing a general hematologist who makes a note of my side effects but offers no coping strategies or solutions.” 

Dr. Hobbs:

Yeah. That is a great question. And one with not one answer. I would say that if you’re an MPN patient and you have a clinician that treats you that feels comfortable treating you or you feel heard and you’re being offered different ways of dealing with symptoms or side effects, etc., then perhaps you don’t have to go out of your way to find an MPN clinician. And participating in webinars like this or learning online may be sufficient to know how to advocate for yourself and how to monitor your disease. That being said, I do think that it’s nice for patients to at least have a one-time opinion with a specialist.  

And I would say that with the advent of virtual care, that has become increasingly more accessible. And so, if that’s something that’s available to you, that’s something you should consider. You know. Sometimes it’s very difficult to travel a long distance to meet with a specialist. But if you can avoid the travel by having a virtual visit, that often times can be very helpful in just knowing that you’ve met with somebody once. And then you can meet with that person periodically throughout your care can be very helpful. And I’ll tell you personally I see patients in the neighboring states to where I live.  

And I like to see those patients periodically or communicate with their local providers. And so, it just helps to offer care that’s very specialized in maybe areas of the country that don’t necessarily have access to specialized care. So, I would encourage patients to seek that out if that’s something that they’re interested in because it’s really become, I think, easier to access the specialists.  

Katherine:

Thank you for your thoughtful responses. And viewers please continue to send in your questions to question@powerfulpatients.org. Before we end the program, Dr. Hobbs, I’d like to hear why you’re hopeful about the future MPN care.   

Dr. Hobbs:

Thank you so much. Those are great questions. I feel very hopeful about the future of MPN. As we mentioned at the beginning of this webinar, the scientific community and the MPN community of clinicians and investigators, it’s such a nice example of how scientists can work together to improve the care of patients. That I always feel very inspired by my colleagues. And now that ASH is around the corner, I can tell you that I feel very hopeful for the future of MPNs because I know that we’re going to learn about a variety of different clinical trials that are showing promising results that are going to ultimately impact the way that we are able to treat our patients with MPN.   

And lastly, I feel very hopeful for the future of MPN because I know that the MPN community is very active. Patients participate in webinars like this, belong to different online groups, and are excellent advocates for themselves. I’ve seen firsthand in my clinic how when a drug gets approved, patients learn about new treatments online and come and ask for them. And so, I just feel very honored to be a clinician that is able to treat a group of patients that can advocate so well for themselves. And so, I definitely see lots of changes in the next couple years.  

Katherine:

This is from Paul who lives in the United Kingdom. “How important is it to see an MPN specialist rather than a general hematologist? Right now I’m currently seeing a general hematologist who makes a note of my side effects but offers no coping strategies or solutions.” 

Dr. Hobbs:

Yeah. That is a great question. And one with not one answer. I would say that if you’re an MPN patient and you have a clinician that treats you that feels comfortable treating you or you feel heard and you’re being offered different ways of dealing with symptoms or side effects, etc., then perhaps you don’t have to go out of your way to find an MPN clinician. And participating in webinars like this or learning online may be sufficient to know how to advocate for yourself and how to monitor your disease. That being said, I do think that it’s nice for patients to at least have a one-time opinion with a specialist.  

And I would say that with the advent of virtual care, that has become increasingly more accessible. And so, if that’s something that’s available to you, that’s something you should consider. You know. Sometimes it’s very difficult to travel a long distance to meet with a specialist. But if you can avoid the travel by having a virtual visit, that often times can be very helpful in just knowing that you’ve met with somebody once. And then you can meet with that person periodically throughout your care can be very helpful. And I’ll tell you personally I see patients in the neighboring states to where I live.  

And I like to see those patients periodically or communicate with their local providers. And so, it just helps to offer care that’s very specialized in maybe areas of the country that don’t necessarily have access to specialized care. So, I would encourage patients to seek that out if that’s something that they’re interested in because it’s really become, I think, easier to access the specialists.   

Katherine:

Mm-hmm. Dr. Hobbs, thank you so much for joining us today.  

Dr. Hobbs:

Thank you so much for having me.  

Katherine:

And thank you to all of our partners. To learn more about MPNs and to access tools to help you become a proactive patient, visit powerfulpatients.org. I’m Katherine Banwell. Thanks for joining us today. 

New Developments in MPN Care

New Developments in MPN Care from Patient Empowerment Network on Vimeo.

Does myeloproliferative neoplasm (MPN) care have new developments? Dr. Kristen Pettit from Rogel Cancer Center shares MPN research updates she hopes to hear about at ASCO 2022.

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Transcript:

Dr. Kristen Pettit:

Yeah, so the ASCO 2022 meeting will certainly be exciting for MPNs, I’m expecting the abstracts haven’t been selected yet as of the time we’re discussing this, so I’m not sure exactly what’s going to be discussed. But what I’m hoping to hear more about is the investigational JAK inhibitor momelotonib for patients with myelofibrosis, specifically those with anemia, I’m hoping to see more results about that.

I’m hoping to hear more about the up-front combination studies that are ongoing in myelofibrosis, so JAK inhibitors plus novel agents compared to JAK inhibitors alone as the first treatment option for patients with myelofibrosis. I’m hoping we get some interim results or updated results from some of those ongoing studies, and I’m hoping to hear more about some of the later line treatment options for patients with myelofibrosis as well.

There are a lot of exciting things going on out there, and we’ve gotten a couple of great updates over the last year, for example, at the ASH meeting in December, and I think we’ll get some more exciting updates at ASCO in May and June.

MPN Treatment Tools and Advancements

MPN Treatment Tools and Advancements from Patient Empowerment Network on Vimeo.

Dr. Kristen Pettit from Rogel Cancer Center shares MPN treatment updates and recent approvals for patient care.

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Transcript:

Dr. Kristen Pettit:

So research in MPNs has really been moving at an extremely fast pace over the last few years, so just over the past few years, we’ve seen advances in nearly every aspect of MPN care, from diagnosis to risk stratification, to MPN treatment, to support of care. We’ve even seen two new drugs, approved for MPN treatment over the past year, the first was ropeginterferon alfa-2b or Besremi approved for polycythemia vera in December 2021. And the most recent was pacritinib (Vonjo) for patients with myelofibrosis with low platelets approved in February of 2022. So there have been lots of exciting improvements very recently, and I think very, many more to come over the next few years.

But there’s still a long ways to go, some unmet needs in the field still include challenges in treating patients with low blood counts, either anemia or thrombocytopenia, low platelets, both of those are still challenging clinical situations. Also, the situation when JAK inhibitors either don’t work well enough for a patient or stop working overtime, that’s a situation that’s very challenging as well. Fortunately, we have a lot of clinical trials and new investigations going on in both of those areas, and patients with low blood counts and patients who have had inadequate or loss of response to JAK inhibitors. So, stay tuned over the next year or two, I think we’ll see major changes in both of those periods.

An MPN Care Partner Shares Why He’s Optimistic About the Future

An MPN Care Partner Shares Why He’s Optimistic About the Future from Patient Empowerment Network on Vimeo.

Care partner Jeff Bushnell, husband of myelofibrosis (MF) patient advocate Summer Golden, explains why he’s hopeful about their future together. Jeff shares key resources that have helped him stay educated and maintain optimism.

Summer Golden and Jeff Bushnell have been married for over 20 years. When Summer was diagnosed with myelofibrosis (MF), Jeff took on the role of care partner and advocate. Summer uses her years of theatre training and comedy to cope with her condition and help others, while maintaining positivity about the future.

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A Care Partner’s Journey: How Life Goes on After an MPN Diagnosis

Transcript:

Jeff:

It’s important to educate yourself because the more you know the less fear can overcome you. And this particular disease – the research is happening so fast, and things are changing. In my estimation, they’ll find – right now, the only cure is a stem cell transplant. It’s normally not done for older people. That in itself is innately risky. I’m convinced, probably within the next five to seven years, there will be a cure for this disease that’s not a stem cell transplant.

The research is moving that quickly on it. And if you don’t follow the disease and the people that are working on it, the specialists, you’re gonna have a much greater chance of feeling powerless and getting overwhelmed by it. As Summer believes, attitude can have a huge, huge impact on how the course of your disease runs. And a doctor would tell you the same thing.

For me, it started with Patient Power. Patientpower.info, I believe is, what it is. They have a whole section for myeloproliferative neoplasms and myelofibrosis, and they’re short videos. And you get a chance to listen to the best doctors that are the head people in this, Dr. Mesa, Dr. V [Verstovsek], and Dr. Jamieson – all the people that are really the movers and shakers. They speak. And you also get a chance to hear other patient’s stories and how they’re dealing with it. And that will give you a much better idea of what you’re facing. And you can really understand things from there. And you can get your knowledge.

Fear comes from lack of knowledge. In my job as a pilot, I flew for 50 years. I very, very rarely was afraid because my knowledge was so great and was reinforced every year by continual training that I felt prepared to handle anything that might come across to me. Knowledge is really important. It will allay your fears dramatically.

When I started online and heard about people that had been journeying with this for 10 or 15 years, initially, I had thought – well, this is a year or two, and it’ll be the end. And then I realized, plenty of people have lived with this for a long, long time. And they had a journey, and they’re doing it successfully. And that gave me confidence.

The more people you can talk to about it, the more you can put your journey in perspective. And it’s really hard to put in perspective for this particular disease because it affects everybody vastly differently. Some cancers – the progression is very, very linear. Everybody kind of goes through the same thing. This one – it depends on the mutations you have in your blood and all kinds of things like that, and some people get really bad symptoms quickly.

Others, they don’t. But the more you know about how those things affect you, the more you know and can understand about what to expect. And the more people you talk to who have it, you can find out about their journeys. It helps put yours in perspective.

I’m optimistic because I really keep up to date on what’s going on. And I see the doctors that are in the forefront of this and the research that they’re putting in and the care they have for working on this disease and the knowledge they have, and I just am quite optimistic. And as I say, I’m following the medical developments extremely closely.

I went to the ASH Conference last year. And I’ve gone to another conference that our doctor spoke at. And I’m just kinda blown away by – I’m fascinated by the science.

My advice would be find out as much as you can about it and support each other in a way that works in your own marriage.

Summer and I approach life a little bit differently. And yet, one of the reasons we do so well together is we kinda have both ends of the spectrum covered. And I sensed that when I met her 20 years ago. And we brought something to the table that each of us needed. And if you can find that in your relationship with your significant other that has the disease, what you can bring to it, what they can bring to it, you can be a tremendous support for each other.

A Care Partner’s Journey: How Life Goes on After an MPN Diagnosis

A Care Partner’s Journey: How Life Goes on After an MPN Diagnosis from Patient Empowerment Network on Vimeo.

Care partner Jeff Bushnell shares how he and his wife, patient advocate Summer Golden, have dealt with her myelofibrosis (MF) diagnosis. Jeff explains how online support and finding an MPN specialist were essential steps in helping them continue to live life to the fullest.

Summer Golden and Jeff Bushnell have been married for over 20 years. When Summer was diagnosed with myelofibrosis (MF), Jeff took on the role of care partner and advocate. Summer uses her years of theatre training and comedy to cope with her condition and help others, while maintaining positivity about the future.

 

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Transcript:

Jeff:

The worst part was initially. We didn’t get a myelofibrosis diagnosis.

It took about a month because in order to definitively diagnose it they have to take a bone marrow sample and send it to a pathologist and so on and so forth. So, all that time, I’m worrying about the possibilities. It could be leukemia or this, that, or the other thing. My way of handling and dealing with scariness – I’m a retired pilot – is to find out things, knowledge.

I spent a huge amount of time on the internet. The LLS Society has papers about it, and I read those.

And the more I got into it – once we found out it was myelofibrosis, I’ve read almost all of the papers that the doctors write for each other to find about this. That doesn’t interest Summer in the slightest. It interests me greatly. So, when we have an appointment with the doctor – when I’m talking to the doctor, it’s like two doctors talking to each other.

When Summer’s talking to her, they talk on a different plane. It’s much more about mental approach to things and that kind of thing.

And for me, when I think back to the beginning of when we had this and where we are now two years later, we’re living the life that we lived before she was diagnosed to be real honest with you.

We do everything that we did before she was diagnosed the same way we did it before, and it was a trip that probably everybody who gets diagnosed or deals with a person that has the disease takes. When it first happened, it hit us like bricks coming out of the sky hitting us on the face. Literally, when we first went to the hospital and she got the word that there was a problem – as I say, we lived in two separate houses – I literally was afraid to call her phone figuring she might be not there. I was that scared. And then, after we met our doctor, which was extremely fortuitous – when we went to the emergency room, the person that was there, she said these look like leukemia things.

So, she called the oncologist. The oncologist on call is our current doctor, Dr. Tiffany Tanaka, and she’s a specialist in this disease. It was like it was meant to be. And Dr. Tanaka asked the guy to do some other tests and then said, “Send her home, but tell her I need to see her this week.” So, we’re thinking all these horrible things. And its New Year’s weekend, so the clinic is closed for about five days, you know? We’re worrying and worrying and worrying.

We finally saw Dr. Tanaka, and it was like a breath of fresh air. This wonderful doctor has the ability to just communicate with the patients. I’m interested in the disease, so she communicated on my level. Summer is not interested in all the medical jargon, so she was able to explain to Summer what was going on and just very, very reassuring, very reassuring.

And then, I went and started getting information. That’s my way of coping with things. The first place I went was – I went to Patient Power and found a lot of information there.

And then I found the online myelofibrosis support group at Facebook. And that was very, very useful. When I started reading about the fact that some people had this for many, many years – then I said this is not – nothing’s gonna happen in the next year or two. We can go back to living. And once we learned more about it and spent more time with our doctor and Summer was able to live her life once she got taking the medicine – she takes Jakafi.

That controlled the basic symptoms, and we haven’t looked back. We just started living our life the way we had been living it before.

Could an MPN Clinical Trial Be Right for You?

Could an MPN Clinical Trial Be Right for You? from Patient Empowerment Network on Vimeo.

Is a clinical trial your best MPN treatment option? Dr. Ruben Mesa explains the clinical trial process and how patients may benefit from participating.

Dr. Ruben Mesa is an international expert in the research and care of patients with myeloproliferative neoplasms (MPNs). He serves as director of UT Health San Antonio MD Anderson Cancer Center in San Antonio, Texas. More about this expert here.

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Transcript:

Dr. Ruben Mesa:

There is much exciting research in myeloproliferative neoplasms. First, research trying to understand, why do people develop MPNs, and why do they progress. This is crucial research, and that this basic research to better understand the diseases will help us asses whether our treatments are having an impact slowing down the progression of the disease, and help us better design therapies that, hopefully, can cure these diseases.

Be reassured  that our goal as a scientific community is to cure the MPNs. Now, until we’re able to do that, we want to be able to best control them as best we can. So, the next level of research is really in new therapies; primarily drug-based therapies, but future therapies using the immune system; potentially using vaccine therapy to try to better control the disease to make the disease as neutral in your life as possible.

Our goal, short of curing the disease is to make the disease as invisible in your life as possible. Hopefully, minimal side effects, minimal symptoms, protected against risk of blood clots or bleeding, ideally, decreasing the risk of progression, and hopefully without any significant side effects from the medication your receiving.

So, that really is our goal.

 Clinical trials are a crucial way for us to improve the treatments that we have for any diseases. And in particular, in areas like myeloproliferative neoplasms where we have therapies, but we don’t have cures, clinical trials are crucial. Clinical trials are a structured way for you to be able to receive a new treatment. That treatment is closely monitored, and starts with a strong belief that that treatment is going to be beneficial for you.

Being on a clinical trial has many steps, but you are in the driver seat in each of them. So, you’re able to enroll in a study, and you’re able to decide at any point whether or not you’d like to continue on in that study. You are made clearly aware of what you’re receiving; what dose; what to expect at each and every step of that therapy.

It’s a treatment just like any other, but we use them because we are hoping that it will be better than the treatments that we have, and we do it on a clinical trial so that we can learn from that experience. If that drug is better, then we should probably expand its use and give it to other people, and have it be approved and used around the world. Or for whatever reason that therapy is not as helpful as we would like, then we learn from that, as well.

Why was it not helpful? Was it the wrong therapy? Was it targeting the wrong aspect of the disease? Were there side effects that made the therapy not beneficial? So, we learn a lot about it in either direction. Hopefully, individuals who participate in clinical trials will have a direct benefit themselves by being able to experience a new therapy that is, hopefully, better. But also, they do have the ability to help other patients now and in the future that will be facing the same disease they have.

How Does Genetic Testing Impact Your MPN Treatment Options?

How Does Genetic Testing Impact Your MPN Treatment Options? from Patient Empowerment Network on Vimeo.

How can genetic testing results impact your treatment and treatment response? Dr. Ruben Mesa provides an overview of common mutations associated with essential thrombocythemia (ET), polycythemia vera (PV) or myelofibrosis (MF) and how identification of these mutations are moving research forward.

Dr. Ruben Mesa is an international expert in the research and care of patients with myeloproliferative neoplasms (MPNs). He serves as director of UT Health San Antonio MD Anderson Cancer Center in San Antonio, Texas. More about this expert here.

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Transcript:

Dr. Ruben Mesa:

We are learning much more about the genetics of Myeloproliferative Neoplasm, as we truly are about the genetics of many diseases. First, when I speak of genetics, these are not the genes we think of of inherited genes that are passed from mother and father, to son or daughter. These are the genes in ourselves that potentially can change over the course of our lives, and those changes or mutations can be associated with diseases.

So, what we have learned is that the genetic changes that are associated with myeloproliferative neoplasms are important, both in terms of predicting how the diseases might behave, and also, potentially in terms of therapies. The genetic changes fall into two different groups.

There’s a first group of the most common mutations that we think are important in driving the disease. The most common is the mutation in a protein called JAK2. That’s a mutation in about half of the patients with ET, half with PV – or half with myelofibrosis, and the majority with polycythemia vera. There is mutations in calreticulin. That’s about in a third of patients with ET, and a third with MF. And then, there’s mutations in MPL, which are present in a handful of patients with ET and with MF.

But in addition to those three mutations that tend to be mutually exclusive; patients tend to only have one of those, and there’s a small group of patients that do not have any of those three. But there’s another group of mutations that we have learned about.

That we are able to obtain on panels of sometimes anywhere from 40 to 100 genes that may or may not be changed or mutated in diseases like MPNs and the implications of what those pattern of changes in those mutations have for those patients. 

MPN Treatment Decisions: Which Path is Best for You?

MPN Treatment Decisions: Which Path is Best for You? from Patient Empowerment Network on Vimeo.

Dr. Ruben Mesa provides an overview of available treatments and reviews important factors to consider when choosing a therapy for essential thrombocythemia (ET), polycythemia vera (PV) or myelofibrosis (MF).

Dr. Ruben Mesa is an international expert in the research and care of patients with myeloproliferative neoplasms (MPNs). He serves as director of UT Health San Antonio MD Anderson Cancer Center in San Antonio, Texas. More about this expert here.

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Transcript:

Dr. Ruben Mesa:

The treatment landscape for myeloproliferative neoplasms is changing very rapidly. And in a good way, it’s increasingly having many more options for patients with Myeloproliferative Neoplasms. But I would separate it, really, into two groups. First, there are those individuals with essential thrombocythemia and polycythemia vera.

These individuals, we have newer therapies, such as interferons, we have, potentially, use of JAK inhibitors, we have some experimental therapies, as well as prior therapies we’ve used and become accustomed to, including hydroxyurea, phlebotomy, and aspirin.

But we’re learning much more about how to use these therapies; how to combine them; what constitutes success with these therapies; what should constitute a change in terms of therapy.

And there are new therapies being developed in the future that will impact this group of individuals with earlier MPNs: ET and PV.

For patients with myelofibrosis, the treatment is evolving. Patients with Myelofibrosis are affected in different ways. It is, in some ways, a more problematic disease.

There is evolution of our most impactful therapy, of stem cell transplantation. We have a better sense of in which patients we should consider that treatment, and how that can be applied in the safest way. We also have more medical treatments. We just saw in 2019 the approval of Fedratinib as the second specific JAK inhibitor approved for patients with myelofibrosis.

We, additionally, now have, truly dozens of clinical trials of new therapies in development that are in clinical trials right now that might be helpful for patients with myelofibrosis who have either had Ruxolitinib, or have a suboptimal response to Ruxolitinib, or sometimes even newly diagnosed patients. But I would say the future is very bright.

So, it is key with a treatment to first understand what is the treatment, what is the dose, and what is the goal? Each of the treatments have different goals. Some of the goals are to decrease the likelihood of blood clots or bleeding.

And frequently, we assess whether we’re protecting against the blood clots or bleeding by bringing down elevated counts. Is the plate account high, and we’re trying to bring it into the normal range? Is the hematocrit high, and we’re trying to bring that to under 45%? Is the white blood cell count high? Have we lowered each of those? First, it’s around controlling blood counts if that is the goal, as well as trying to decrease at risk of blood clots or bleeding.

 Second, if patients have symptoms associated with their MPN, sometimes itching, sometimes symptoms associated with high courts, sometimes enlargement of the spleen, or symptoms associated with the spleen, have we reduced or nullified those symptoms? Have we shrunk the spleen if the spleen was enlarged?

And then, finally, we assess our goal by trying to be sure that patients are not progressing or getting worse on the disease. So, depending upon the treatment, we first asses what is our goal? Is it to improve counts? Is it to improve symptoms? Is it to shrink the spleen? And have we accomplished one, two, or all three of those goals? Or was only one those our goals to begin with?