Tag Archive for: CAR T-cell therapy risks

Considering CAR T-Cell Therapy for Myeloma? Key Questions to Ask Your Doctor

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Considering CAR T-Cell Therapy for Myeloma? Key Questions to Ask Your Doctor from Patient Empowerment Network on Vimeo.

What key questions should myeloma patients ask about CAR T-cell therapy? Expert Dr. Jeffrey Matous shares key advice to help patients make an informed decision about CAR T-cell therapy. 

Dr. Jeffrey Matous is a myeloma specialist at the Colorado Blood Cancer Institute and the assistant chair in myeloma research for Sarah Cannon Research Institute. Learn more about Dr. Matous.

See More from Evolve Myeloma

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Myeloma Combination Therapy _ What Patients Should Know

 Should You Push for a Stronger Myeloma Treatment at Relapse

Transcript:

Katherine:

Yeah, so what questions should patients be asking their doctor when considering CAR T-cell therapy? 

Dr. Jeffrey Matous:

I think the first thing, of course, is am I a candidate, because the commercially approved CAR-T cells, there are very specific criteria for who’s a candidate, who could receive it. Okay, and then, you want to know, one, if you’re a candidate. Two, what the risks and benefits are. 

Three, are there alternatives besides CAR T-cell therapy. Is it too early or too late to do this? Should we think about maybe another clinical trial or one of the T-cell redirecting antibodies, for example? You want to ask those questions for sure. These treatments are tremendously expensive, of course, and so that may come into play, as well. You want to know what the experience of the center is with CAR T-cell therapy, I think, and then, you also want to know are there clinical research studies for which you might be eligible to have CAR-T cells, not just commercially available ones, because we have two that are commercially available right now, and we have scores of CAR T-cell treatments that are still in clinical trial. 

Myeloma CAR T-Cell Therapy: How Does It Work and What Are the Risks?

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Myeloma CAR T-Cell Therapy: How Does It Work and What Are the Risks? from Patient Empowerment Network on Vimeo.

What should myeloma patients know about CAR T-cell therapy? Expert Dr. Jeffrey Matous explains the how CAR T-cell therapy works to treat myeloma, risks associated with this therapy, and reviews common side effects that patients may experience.

Dr. Jeffrey Matous is a myeloma specialist at the Colorado Blood Cancer Institute and the assistant chair in myeloma research for Sarah Cannon Research Institute. Learn more about Dr. Matous.

See More from Evolve Myeloma

Related Resources:

Questions and Considerations When Making Myeloma Treatment Decisions

 Considering CAR T-Cell Therapy for Myeloma_ Key Questions to Ask Your Doctor

 Should You Push for a Stronger Myeloma Treatment at Relapse

Transcript:

Katherine:

Let’s dive into new and emerging treatment. CAR T-cell therapy has been approved for myeloma patients and it’s certainly a hot topic right now. Can you tell us about this treatment and who it might be right for? 

Dr. Jeffrey Matous:

Absolutely, so these T-cell therapies in myeloma are really exciting, and basically, how they work is T cells are cells that normally, in our body, they’re part of our immune system. When they see something foreign, usually, it’s a foreign infection or some kind. T cells go into kill mode and take out the foreign invader, and they’re supposed to do this with cells that are thinking about turning into cancer, but for various reasons, cancer cells can escape the T cells, and then, kind of brainwash the new system to say, hey. It’s okay if we coexist with you. No big deal. We’ll just hang out together. Okay? And that’s not okay. And so, in CAR T-cell therapy, what we do is we take the patient’s T cells.  

We remove them from the blood with a procedure called apheresis, which is a machine that many patients might be familiar with through their stem cell collections. 

It’s the same machine. And we collect these T cells. Then, they go to a laboratory where they are genetically modified in the laboratory using very sophisticated techniques to become myeloma killers. And we tell – we educate the T cells to become myeloma killers. We grow them up in sufficient numbers, and then, we return them to the patient. We just, basically, put them back in the patient’s bloodstream in the vein and they go and they are really effective at killing myeloma cells. And that’s CAR T-cell therapy, so it’s an amazing immune therapy. It’s way more complicated than I laid out, of course, but that’s the general thought behind it. 

Katherine:

What are the risks of this therapy? 

Dr. Jeffrey Matous:

Absolutely, so we have a lot of patients who come and ask about CAR T-cell therapy and think that it’s the same thing as getting daratumumab in the clinic or carfilzomib in the clinic.  

Get it and you’re on your way. Far from that, and so, CAR T-cell therapy has a lot of risks. The risks fall into a few different categories. The first risk is called CRS, which doesn’t stand for what you think it stands for. It stands for Cytokine Release Syndrome. This occurs when the T cells recognize the myeloma cell and kill it, and when they do this, a lot of substances get released in the body that can cause a lot of symptoms, like fever, or low blood pressure, or low oxygen, and this requires specialized management to shepherd people through this.  

This almost always occurs in about the first week of the treatment after the patients receive the CAR-T cells. In addition, patients who receive CAR-T cells can have what’s called neurologic toxicity that falls into many different categories. It can be something as simple as a headache, or a transient or temporary difficulty, you know, saying words or being confused, or in the most severe situation, even a seizure. 

This requires a lot of close monitoring for neuro toxicity. In addition, we know that patients that get CAR T-cell therapy are, for quite a while after they receive the CAR-T cells, an increased risk for infection. It’s very suppressing of the immune system, immunosuppressive. And lastly, a lot of our patients who go through CAR T-cell therapy have low blood counts for a long time and they have to be monitored for this, might need transfusions, or some different therapies. It’s a complicated therapy for sure. 

What Are the Risks of CAR T-Cell Therapy?

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What Are the Risks of CAR T-Cell Therapy?  from Patient Empowerment Network on Vimeo.

Dr. Melissa Alsina, a myeloma expert from Moffitt Cancer Center, reviews the potential side effects of CAR T-cell therapy for myeloma patients, and discusses how these side effects may be managed.

Dr. Melissa Alsina is an associate professor of medicine in the Blood and Marrow Transplant Program at Moffitt Cancer Center in Tampa, Florida where she also serves as head of the Multiple Myeloma Transplant Program. Learn more about Dr. Alsina, here.

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How Is CAR T-Cell Therapy Changing the Myeloma Treatment Landscape?

 What Are Common Myeloma Treatment Side Effects?

Transcript:

Katherine:

What are the risks of CAR T-cell therapy? 

Dr. Alsina:

So, in myeloma, it is, in general, pretty safe. There are two main – well, actually, I would say three main side effects that we can see with CAR-T. Number one is called cytokine release syndrome, and we are getting these cells from the patient’s immune systems, sending them a lab to be manufactured so that they can recognize this protein, BCMA, in the myeloma cells. 

And then, those cells are grown, so essentially, what we’re doing is that we’re taking the immune system of the patient, and we’re making it very specific against the myeloma cell. And then we’re growing it, so we’re making a hyperactive immune system, and then giving it back to the patient. And then, those cells, they are going to go ahead and react against the myeloma cells and start killing the myeloma cells, and in doing that, that reaction, that immune reaction will elicit release of a lot of proteins – cytokines – and that can cause side effects. 

When that happens, that is called cytokine release syndrome, and the most common finding with that is a fever. Patients can have a high fever. And then, it varies depending on the CAR-T that the patients are getting. So, for example, with this Abecma, usually, the reaction happens right away after you get the cells – the next day, so that’s why these patients, we admit them to the hospital because we know that this cytokine release syndrome is going to happen right away.  

And, it could be just a fever. In the majority of the patients, it happens like this, is just a fever, but it may be about 20 percent of the patients, that reaction can be more severe, and it could be a fever with low blood pressure or shortness of breath, and it could be a fatal complication, but that’s very, very rare.  

And we know – we can identify, obviously, when it’s happening, and there’s a medication that we can give to actually sort of counteract that reaction and don’t let it progress, and in the majority of the patients, that works quite well.  

Katherine:

What other side effects are there for CAR T-cell therapy? 

Dr. Alsina:

Yeah, so besides the main one that I discussed, cytokine release syndrome, the other thing that could happen is neurotoxicity, meaning that T cells can actually cross to the brain and cause toxicity in the brain, and depending on the type of CAR-T that the patient is getting, it could be less or more risk.  

But essentially, what could happen is that the patient could have some aphasia, like for example, difficulty finding words. It could also be just a headache. Patients could have seizures, so we do give the patients medication to prevent seizures while they are undergoing CAR-T. 

They can have difficulty writing, so we make every patient write a sentence every day to make sure that’s not being affected. And we do a mini mental status every day. Every day, we’ll go see the patient and ask them 10 different questions, like “Where are you? What day is it? Who’s the president?”, we show them an object, and so on so we can monitor these things very closely. If we see any changes, then we can intervene. Usually, for neurotoxicity, we give steroids. 

The good news, though, is that this is very rare. With Abecma, it’s very rare that a patient would have severe neurotoxicity. With ciltacabtagene autoleucel (Carvykti), which is the one that was approved more recently, from 100 patients that were treated, there were five patients that had this delayed neurotoxicity, some of them with movement disorders, like Parkinson’s-like systems, and these were delayed. These didn’t happen in the first few weeks. 

But we learned what are the risks associated with these, the majority of the patients that have very high tumor burden, so what we do is that we monitor the patients very closely, especially the patients with high tumor burden. The ideal situation is that we can control the disease a little bit better before taking them to CAR-T, but even when that’s not possible, what we do is that we intervene early on if we see that these patients are getting any side effects and being more aggressive with the intervention. 

And then, the third, more important side effect is these CAR-T cells can prevent blood counts to recover. For CAR-T, we give chemotherapy.  

That would allow the T cells to expand, and this chemotherapy can drop the blood counts, but usually, they recover quickly, but in some patients, this recovery doesn’t happen quickly, and patients can have low counts for months, and obviously, that would bring increased risk of infection. 

So, that is a potential complication, especially in patients that have received a lot of prior therapies, and it’s not common that a patient would take a long time, but it could happen, and sometimes, occasionally, we’ve had to give these patients a stem cell boost from stem cells that we have stored to actually make their counts recover. So, those are essentially the three most common complications, but in general, it’s a treatment that is well tolerated and very manageable, and I can tell you the majority of the patients that I’ve treated, they’ve said this is easier than a transplant.