Tag Archive for: light chains

What Is Known About the Risk of Myeloma Relapse?

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What Is Known About the Risk of Myeloma Relapse? from Patient Empowerment Network on Vimeo.

Myeloma relapse is common, but what is known about the the probability of relapse? Expert Dr. Benjamin Dermain explains the significance of clinical trial data and the important role of blood work, including monitoring M-spike and light chain levels.

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:  

Is research being done to determine the likelihood of relapse and when that might occur?   

Dr. Derman:  

Yeah. I mean, we can look at clinical trial data for regimens that have been tested in the relapsed or refractory setting and say, “Okay, we know that this three drug regimen typically gives patients a year before the disease comes back.” Or “This one gives two-and-a-half years or three years.” So, that’s one piece.  

But when you think about who – if you wanted to know ahead of time, “Okay, a patient with high-risk disease, they’re likely not to have as good of a response.” But nobody knows ahead of time the exact amount that they’re going to relapse.  

But one of the things that we focus on, part of the reason that patients get a good amount of blood work when they have myeloma and they’re on therapy is that we have a measure in the blood, or we have several measures in the blood, where we can monitor for relapse. So, we can look at the abnormal proteins, what we call paraproteins in the blood. Either as the M-spike, is what it’s called, or light chains. We look at both of those to see if there are increases in those numbers over time.

When a patient’s responding, those numbers come down. When a patient is losing response and their disease is progressing, that’s when we start to see those numbers go up. And that’s often an indication that we need to switch treatment, even before a patient develops symptoms related to their myeloma.   

Will Myeloma Patients Need Fewer Biopsies in the Future?

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Will Myeloma Patients Need Fewer Biopsies in the Future? from Patient Empowerment Network on Vimeo.

Is it possible multiple myeloma patients will need fewer biopsies in the future? Dr. Sikander Ailawadhi from the Mayo Clinic explains bone marrow biopsies, myeloma detection, and potential tests in development.

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Transcript:

Lisa Hatfield:

Okay, so for myeloma patients, even though our insurance companies, sometimes we have to argue with them a little bit as if we’re beating down doors to get a bone marrow biopsy, nobody loves those, I’m not sure why insurance companies think we would actually want that. But what do you see in the future, I know there’s talk about mass spectrometry. Every myeloma patient would love to hear the words, you’ll never have to have another bone marrow biopsy.

Do you see a future in that and some of these newer tests that are coming out?

Dr. Sikander Ailawadhi:

Sure, I think that’s absolutely important to know because…yes, that’s the bane of our existence, unfortunately, disease primarily lives inside the bone marrow, so to get the true information…that’s where you go. So there are some tests that are being developed or researched, patients may have heard about what’s being termed, the liquid biopsy or taking a blood sample to identify plasma cells or disease, there’s a lot of research going on around it. But, unfortunately, it has not panned out yet, because by nature, plasma cells do not circulate in the blood, or if they circulate, it’s a very, very small amount, so it’s hard to pick it up from the blood and do the tests on it. But there’s a lot of research going on for it to get the plasma cells, get the FISH testing, and all the genetic testing from the plan.

So stay tuned, hopefully we’ll get in that direction. What you also mentioned, a test that’s been developed and done at Mayo Clinic is what’s called maspect or looking at these proteins, these M-spikes, these light chains, the IgGs, etcetera. Looking at them at a molecular level and separating them based on their weight, because IgG kappa, for example, from one patient may be different from the IgG kappa that came from a different patient, but they can be separated out based on the weight, based on the molecular weight… on the size, and that can sometimes be used that how the test has been developed to use that property to identify and almost catalog and tabulate and follow that patient’s protein, so that we can hopefully collect or detect a recurrence sooner, note a deeper response to the treatment.

And in the future, hopefully use that depth of response and that earlier recurrence as…or earlier detection of the protein as a survivable matter, recurrence. I still think that it’s two different things, one is to look at the protein and note it at a deeper level to know whether the patients responded or relapsing, but so far, if you want to do those rotation testing, the FISH testing, and look at some of the characteristics of the myeloma, unfortunately, we do have to go to the bone marrow, but down the road, I’m hoping that those liquid biopsies and the blood tests will hopefully make it happen.

Lisa Hatfield:

Well, that would be music to my ears, even fewer biopsies would be great, so that would be awesome.

Why Do Some Myeloma Patients Experience Chronic Kidney Disease?

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Why Do Some Myeloma Patients Experience Chronic Kidney Disease? from Patient Empowerment Network on Vimeo.

What do multiple myeloma patients need to know about chronic kidney disease? Dr. Sikander Ailawadhi from the Mayo Clinic shares insight about incidence of kidney dysfunction, healthcare disparities, and the importance of timely myeloma treatment.

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Transcript:

Lisa Hatfield:

Why do some myeloma patients experience chronic kidney disease?

Dr. Sikander Ailawadhi:

So at least I think that’s a very important question. Kidney dysfunction can be seen in as much as 20 percent of patients at the time of diagnosis, and there are a significant number of patients who would have kidney dysfunction even as they go on with their myeloma journey. And something that I work on quite a bit, and I’m interested in this healthcare disparities. I just want to point out that patients who are African Americans do tend to have a much higher incidence of kidney dysfunction and need for kidney dialysis with myeloma at the time of diagnosis or even with treatment. Now, I mentioned that these…or we discussed previously that these plasma cells, that normally live in the bone marrow, they produce these proteins and these proteins, heavy chains, light chains are part of our body’s immune system.

But when these plasma cells become cancerous, they produce a higher amount of those abnormal proteins, these proteins circulate in the blood, and they frequently get depositing the kidneys. So when these proteins are very high in number, an amount, these proteins can circulate in the blood and clog up the kidney tubules, and that’s where some chemical reactions also happen and kidney damage can occur. When somebody gets diagnosed with myeloma and they have kidney dysfunction, we have the option of the opportunity to reverse that kidney dysfunction if we treat the disease appropriately and with the right kind of drugs fast enough.

In fact, there is some older data study data, which shows that within the first two months, we are able to reverse the kidney function, then it is no longer a prognostic significant marker. And it’s extremely important if somebody’s kidney function is getting affected by their myeloma, that they need to be treated very aggressively to try and solve it and save that kidney function because the longer the kidney dysfunction stays, it is quite possible that it may become irreversible. 

Understanding MRD and What It Means for Myeloma Patients

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Understanding MRD and What It Means for Myeloma Patients  from Patient Empowerment Network on Vimeo.

Myeloma expert Dr. Melissa Alsina, of Moffitt Cancer Center, provides an explanation of minimal residual disease (MRD) and how she uses MRD in patient care.

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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Transcript:

Katherine:

What is MRD, and what does it mean for patients? 

Dr. Alsina:

So, MRD stands for minimal residual disease. So, it means that if a patient is in complete remission, what it would mean is that I don’t see any myeloma cells in the bone marrow and I don’t see an M spike. The M-spike is zero in the blood and in the urine, and the light chains are fine.  

But even with that, there maybe be some disease that is residual that I can’t see by conventional methods, so there’s two methods that have been developed that are able to detect one cancer cell in a million cells. 

Katherine:

Wow. 

Dr. Alsina:

So, if I have a patient that is in complete remission, I can use one of those methods to look, and that will tell me if the patient still has minimal residual disease or not. 

So, the reason why it is important is because there are many studies that have shown that if I can get a patient to be minimal-residual-disease-negative, no evidence of disease by those two tests – that I can explain a little bit more if you want – then those patients are going to do better, their response is going to last longer, and the patients are going to live longer. 

So, nowadays, with our better treatments, we use also that as a goal. We say okay, I not only want to get a patient in a complete remission, I want to get that patient to MRD negativity.  

And we do adjust our therapy to get there. As an example, I can do a transplant in a patient, and three months after transplant, I look at that minimal residual disease. If it’s negative, then I do Revlimid (lenalidomide) maintenance, which would be standard of care. If it’s positive, I use two drugs to try to get that patient to that MRD-negativity level, and there are many studies right now looking at how to adjust our treatment based on response.