Tag Archive for: CD38

What Factors Affect Myeloma Treatment Decisions?

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What Factors Affect Myeloma Treatment Decisions? from Patient Empowerment Network on Vimeo.

Myeloma treatment decisions can vary by patient. Expert Dr. Benjamin Derman reviews factors that may guide induction therapy choices, treatment classes currently available, and strategies for managing common side effects.

Dr. Benjamin Derman is a hematologist and oncologist specializing in multiple myeloma at the University of Chicago Medicine Comprehensive Cancer Center. Learn more about Dr. Derman.

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Transcript:

Katherine:

There are a lot of available therapies for myeloma. And I’m wondering what factors might impact treatment decisions. You did mention comorbidities. But what other factors are there?   

Dr. Derman:

Sure. And I think in part, it depends on if we’re talking about induction therapy or in the relapsed refractory setting. Let’s focus on induction therapy, right?  

So, there are some drugs that we’re typically going to employ pretty much universally. For those who are inclined to use that CD38 monoclonal antibody that I mentioned, it pretty much plays well with patients of all walks of life. So, that’s one where I feel really comfortable regardless.  

Lenalidomide is a drug that we don’t necessarily know from the get-go if there’s going to be a patient that’s not going to tolerate it well.   

We might reduce doses up front. But for the most part, that’s another drug that we’re typically going to use. I would say the one exception is for patients who have a simultaneous diagnosis of amyloidosis. And we know that in amyloidosis, lenalidomide may not be as well-tolerated.  

But actually, one of the key decisions that I’m often making in clinic myself is around that drug class that I mentioned earlier called proteasome inhibitors. And I mentioned two different drugs. There’s bortezomib and carfilzomib. And they actually come with very different side effects that I think are important to mention.  

Bortezomib is one that is typically associated with a high rate of numbness and tingling, what we call neuropathy in the fingers and toes. And about 75 percent of patients have been reported in the trials to get this. And most of it is what we call lower grade. But I’m not in the patient’s body, and I don’t know what that – what even a grade 1, which would be the lowest grade, really feels like. And if I have a mechanic, somebody who types for a living, a surgeon, somebody who uses their hands or their or rely on their feet for their day-to-day, that’s a scary prospect, right?  

The flip side is this drug, carfilzomib (Kyprolis), is one that does not really cause nearly as much neuropathy, but has been associated with cardiac effects. Heart issues. And so, that can scare people, right? Heart’s important I hear. So, we have to be really careful in how we pick these therapies and talk about it with patients.   

What Are Current Myeloma Treatment Approaches?

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What Are Current Myeloma Treatment Approaches? from Patient Empowerment Network on Vimeo.

What should multiple myeloma patients know about current treatment approaches? Expert Dr. Benjamin Derman outlines available treatments, factors that influence options, and the role of combination therapy in myeloma care.

Dr. Benjamin Derman is a hematologist and oncologist specializing in multiple myeloma at the University of Chicago Medicine Comprehensive Cancer Center. Learn more about Dr. Derman.

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Key Questions to Ask Your Myeloma Doctor About Induction Therapy

 Understanding Myeloma Treatment Types

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Transcript:

Katherine:

What types of treatment are offered for myeloma patients?  

Dr. Derman:

Right. So, if you think about at the point where a patient is diagnosed with myeloma, unfortunately, always a tough – always tough news to receive and to share with patients as well, we start to think about dividing treatment into phases. And in part, some of it’s going to depend on, what is the fitness level of a patient in front of me? And not so much age per se, but really fitness level. And what I mean by that is independence in their activities of daily living, their ability to walk, go up flights of stairs, carry out just their daily life.  

So, assuming that all options are on the table, we consider those patients to sort of be what we call stem cell transplant eligible. 

And that picks a sort of variety of pathways that we can go down. And then the other variety of pathways we can go down are patients where either because of a comorbid conditions, there are other medical problems, or because of their fitness level, a stem cell transplant is not really going to be something that we consider.

But either way, in either case, we start with something called induction therapy, where we’re aiming to induce a remission. Or induce a response as we typically say more commonly in myeloma.  

And usually that involves a combination of three or now possibly four drugs. And it’s really, really different the way that we treat myeloma than we treat other cancers. And what I mean by that is the traditional thought of using very harsh chemotherapy drugs that make people feel very sick, very ill, lose their hair, those kinds of things. Things that are maybe more outwardly associated with chemotherapy, we don’t see that with myeloma.  

In fact, I often tell patients if they’re fortunate to not have the disease affect them so much at diagnosis, a lot of people may not even know that they’re on treatment. And that can be good and bad, because they don’t know that what you’re going through, which can be challenging in its own right.  

So, really what we use are a combination of therapies. They can be oral drugs, they can be subcutaneous injections under the skin, or infusions. And one of the newer advances is using immunotherapy in myeloma. And this is a little different than it is in solid organ cancers like lung cancer or melanoma where immunotherapy is very popular as well. 

One of the main targets that we go after is something called CD38 on the surface of myeloma cells. And CD38 can be targeted with a type of monoclonal antibody.  

And there are two that are out right now, daratumumab (Darzalex) and isatuximab (Sarclisa). Daratumumab is actually approved to be used in the frontline setting, meaning at diagnosis. And that has really allowed us to augment the already – the backbone that we’ve been already using for quite some time in myeloma.  

Dexamethasone (Decadron), which is a steroid, is typically employed in all of these cases. And then we use drugs that are in the class of what’s called immunomodulatory iMiDs, chiefly lenalidomide (Revlimid) is the main one that we use in oral drug, and that’s been approved since 2006 or so.  

And then bortezomib (Velcade), which is something called the proteasome inhibitor, or its cousin carfilzomib (Kyprolis), can be used as well in the frontline. So, we’re usually combining these three or four drugs together in order to create this sort of symphony that really targets the myeloma from many different aspects.  

Katherine:

Yeah. How do patients know if they have any of these targets, such as CD38?  

Dr. Derman:

So, actually it’s interesting. CD38 is pretty much ubiquitously exposed on the surface and expressed on the surface of myeloma cells. So, it’s in a pathology report. It’s actually one of the ways in which we can identify what makes a plasma cell a plasma cell. But CD38 is one that is essentially ubiquitously expressed.

And I say that with the idea that that expression may go down if you use these drugs to target that specific – that target. So, as time goes on, it’s not a drug that you may be able to reuse over and over. Or at least there might need to be a nice long break.  

Myeloma Expert Gives an Overview of Novel Therapies

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Myeloma Expert Gives an Overview of Novel Therapies from Patient Empowerment Network on Vimeo.

What novel multiple myeloma therapies are available for patients? Dr. Sikander Ailawadhi from the Mayo Clinic shares an overview of novel therapies of CAR T-cell therapy, monoclonal antibodies, bispecifics, and immunomodulators and discusses therapies currently in rapid development.

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Transcript:

Lisa Hatfield:

We are going to jump right into a discussion about some of the novel therapies that there is much buzz about right now, and it’s kind of an alphabet soup these novel therapies. I actually was trying to digest all of this information and divide it into the general categories.

And correct me if I’m wrong, but we have monoclonal antibodies, we have bispecific antibodies like the CAR-T therapies, and they target different things. We have BCMA, we have GPRC5D, FcRH5, we have things called antibody drug conjugates and cell mods. So, Dr. Ailawadhi, if you can just give us kind of a broad overview of these therapies and how they may be used to harness our immune system, and how they come into play when you’re treating your patients, how and when they come into play when treating your patients.

Dr. Sikander Ailawadhi:

Surely, so I think thanks a lot for bringing up that discussion, this is extremely important, and I think it’s most important because if a myeloma patient goes online and wants to search for information or research, these things start coming up this term start coming up. So it’s extremely important for a knowledgeable and empowered patient to learn about these, understand them, so that they are able to digest that information. And I should mention that a lot of what we’ll talk about about these particular treatments may not be applicable to newly diagnosed patients or a recently diagnosed patient, but this is important enough and exciting enough that I would want every single patient to pick up this information. Learn it hopefully, and maybe park it for now somewhere, so that hopefully down the road it becomes important and handy.

So you asked about monoclonals, bispecific, CAR-Ts, cell mols, etcetera. Let’s take a step back, let’s think about these as strategies to target myeloma. Myeloma treatment is going through a change where immunotherapy and harnessing the body’s own immune system is becoming extremely important, and when we do that, the immunotherapy is typically very targeted, so what these drugs these agents, these terms, this alphabet soup is doing is it is targeting specific markers on the myeloma cell on the plasma cell.

For example, one of the markers is CD38. There is a monoclonal antibody. There are actually two monoclonal antibodies. Daratumumab (Darzalex), rituximab (Rituxan) that are FDA-approved, but there are other ways of targeting CD38, for example, CD38 targeting CAR-T cells, CD38 targeting antibody drug conjugates, etcetera. So CD38 is one important part. A very, very, very important thing in the past one year or a year-and-a-half has been what’s called B-C-M-A, B cell maturation antigen. BCMA is another target on plasma cells. Very effective, very specific.

So there are many, many drugs that are available and becoming available to target BCMA. Right now, there are three drugs that are FDA-approved that can target BCMA. Two of them are CAR-T cells, a particular way of going after BCMA in which the body’s own T cells are collected. These are not stem cells, these are T cells, T lymphocytes, these T cells are collected, they are actually genetically modified to go and fight against the BCMA, and then those modified T cells are multiplied in the lab and given to the person as a drug, they go and seek the plasma cells because of BCMA kill them harnessing the body’s immune system.

So there are two CAR-T cells against BCMA, one called ide-cel (Abecma) and one called cilta-cel (Avekti). There has recently been available a bispecific antibody against BCMA, we call it bispecific because it connects to BCMA from one end and from a second it connects to the body’s T cells again, bring the T cells close to the plasma cells to kill them. Then bispecific antibodies called teclistamab (Tecvayli). And until recently there was another drug available against BCMA which was what’s called an antibody drug conjugate. This drug is called belantamab (Blenrep) for the timing, belantamab has been removed or withdrawn from the market in the U.S., but there are ongoing clinical trials and down the road, it may come back again.

Now, antibody drug conjugate is another way of targeting something in which there is a seeker for the BCMA in this case, and it has a payload of some kind of a toxin, so that when the drug connects to the plasma cell through the BCMA in this case, that toxin is released, it can kill the cell, so either we harness the body’s immune cells, the T cells by CAR-T or bispecific, or we kill the cell by releasing a toxic payload from a drug, antibody drug conjugate, these are all different methods of targeting the myeloma cell. So I talked to you about monoclonal bispecific CAR-T and ADC as different strategies, CD38 and BCMA, some of these strategies are available, but there are other targets which are very exciting and new drugs are being developed against them, two of the very interesting targets there one is called GPRC5D, and the other is FcRH5.

These GPR5CD or FcRH5 are two different targets on myeloma cells. No drugs are currently FDA-approved, but they are being developed very rapidly, and we have a couple of extremely promising agents which will be coming down the pipe. And you also mentioned something called cell mods. Cell mods are some newer drugs in the family of what’s called IMiDs or immunomodulators, in which our patients may be aware of thalidomide (Thalomid), lenalidomide (Revlimid), and pomalidomide (Pomalyst). The cell mods are kind of the same family, and there are a couple of them that are also being developed.

So why is this important for everybody, whether they are newly diagnosed or relapsed or long-term survivor with myeloma, because this tells you that not only are we getting newer drugs in the same classes, we are also getting brand new classes of drugs, and you can imagine that means that those brand new strategies are ways to target the plasma cell, we know cancer cells are smart and they develop invasive mechanisms to become resistant to drugs, but every time something gets resistant if we have a brand new mechanism to go against the disease, but that’s exciting because that’s why we are seeing deeper responses, even in very heavily pre-treated patients, because we are using newer specific, relatively safe, convenient strategies to going after the plasma cell.

I know that was a lot of information, but I hope this helps our listeners learn a little bit about what you rightly said is an alphabet soup, but I would like us to think about it as an exciting time for being a myeloma doctor, and certainly a very hopeful situation for all our patients. 

What Emerging Myeloma Treatments Are Showing Promise?

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What Emerging Myeloma Treatments Are Showing Promise?  from Patient Empowerment Network on Vimeo.

Myeloma specialist Dr. Mark Schroeder reviews the latest advances in myeloma treatment, including a discussion of CAR T-cell therapy and bispecific antibodies.

Dr. Mark Schroeder is a hematologist at Siteman Cancer Center of Washington University School of Medicine in St. Louis. Dr. Schroeder serves as Associate Professor in the Department of Medicine. Learn more about Dr. Schroeder.

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Transcript:

Katherine Banwell:

What about emerging therapies for myeloma? What approaches are showing promise? 

Dr. Mark Schroeder:

So, I think the biggest news in myeloma, and across a lot of cancers now, are immunotherapies. We know in myeloma – now we have two CAR T-cells –  

Now a CAR T-cell is engineering your own immune cell called a T cell to express a receptor on its surface that binds to the myeloma, and then those immune cells go and kill the myeloma. That’s a form of immunotherapy.  

There’s two CAR-T cells for treating myeloma after the myeloma has come back four times, has needed four treatments. Those are very active in that line of therapy, and we can see response rates over 80 percent in patients who otherwise weren’t responding to other approved therapies for myeloma.  

On the other hand, there are other immunotherapies that are used earlier in the treatment course of myeloma. One that is not incorporated more frequently for the initial treatment is a drug called daratumumab – it’s an antibody. It’s a protein that binds to the surface of myeloma and stimulates the immune system to react against the myeloma. And so, it’s not a traditional chemotherapy, but it’s using your own immune system to attack the cancer.  

And then a third one that’s probably just as – it looks just as potentially effective as CAR-T cells are called bispecific antibodies. And that would use a protein similar to daratumumab which is an antibody, but it uses parts of antibodies to bind to – it could be two different proteins – one expressed on a T cell, the other one expressed on the myeloma cells. And when it binds, it brings those two cells together and causes your own immune system to attack the myeloma. Those are also very effective, and within the next month or two, there will be a bispecific antibody approved for treating patients with myeloma. 

Katherine Banwell:

Oh, that’s great news. Any others? 

Dr. Mark Schroeder:

Yeah, well – I mean, the other potential – there are other immune cells called natural killer cells that are also in clinical trials for development to attack myeloma, and potentially even engineering those natural killer cells to attack myeloma.  

There are other antibodies; sometimes the antibodies of protein bind a specific target on the surface of the myeloma. I mentioned one – daratumumab – but there is a whole list of others that are in clinical development. The one other antibody – or two, couple of other antibodies that are approved for treating myeloma are isatuximab which also binds to CD38. And another one called elotuzumab which binds to a protein called CS1 or SLAMF7 on the surface of myeloma.  

That’s more information than you probably wanted or needed, but those antibody therapies can be very effective in treating myeloma. There is another antibody therapy that has a payload of a toxin on the antibody, and it binds to BCMA or B-cell maturation antigen.  

That’s the same antigen that the bispecific antibodies as well as the CAR-T cells are targeting on myeloma surface, and so that is potentially one that is approved by the FDA also to treat myeloma.   

Katherine Banwell:

As we close out our conversation, Dr. Schroeder, I wanted to get your take on the future of myeloma. What makes you hopeful? 

Dr. Mark Schroeder:

Well, I am hopeful – just within the last five years, there have been a number of new drugs approved for myeloma. They are approved for later lines of therapy, but they are being moved earlier in the treatment. And within the last 10-20 years, we’ve seen an improvement in the survival of patients with myeloma. As these new therapies are in development, as they’re being moved earlier in the treatment line, I’m very hopeful that survival and potentially cure for this cancer is possible. The only way that we’re going to get to that point is through clinical research and for patients to partner with their physicians and to consider clinical trials because that is the only way that new drugs get approved and are available to other patients with myeloma. So, I’m excited about what is approved; I’m excited about what’s coming through the pipeline to treat myeloma.