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What Standard Testing Follows a Myeloma Diagnosis?

What Standard Testing Follows a Myeloma Diagnosis? from Patient Empowerment Network on Vimeo

What tests will you have following a myeloma diagnosis? Are there additional tests you should request? Dr. Joshua Richter provides an overview of key testing for myeloma and why each test is necessary.

Dr. Joshua Richter is director of Multiple Myeloma at the Blavatnik Family – Chelsea Medical Center at Mount Sinai. He also serves as Assistant Professor of Medicine in The Tisch Cancer Institute, Division of Hematology and Medical Oncology. Learn more about Dr. Richter, here.

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Transcript:

Katherine:

What standard testing follows a myeloma diagnosis?

Dr. Richter:

So, the standard testing that follows a myeloma diagnosis is multifaceted. So, the first one is blood work. And we draw a lot of blood tests to look at the bad protein that the cancer cells make. So, we send tests like a protein electrophoresis which tells us how high that bad protein is. We send immunofixation. That test tells us what type of bad protein it is. You’ll hear names like IgG kappa and IgA lambda.

These are the different types of bad proteins made by myeloma cells. Oftentimes, we’ll send urine tests to find out how much of that bad protein that was in the blood is coming out in the urine. We will, typically, do a bone marrow biopsy. It’s a test where we put a needle into the back of the hip bone to look at the marrow itself. And we’ll use that marrow to figure out how much myeloma there is, any other characteristics like the genetic changes in those cells.

The other big thing is imaging. So, the classic imaging that we do with myeloma is something called a skeletal survey. It’s, basically, a listing of X-rays from head to toe. But nowadays, we have newer techniques, things like whole body low-dose CAT scans, something called a PET-CT scan, and MRI scans. And your care team may have to figure out which one is right for you at what given time.

Katherine:

Mm-hmm. Are there additional tests that patients should ask for?

Dr. Richter:

Absolutely. One of the most important things from myeloma has to do with the genetic risk stratification.

So, for almost all cancers, the staging has a very big impact. And people will often think of cancer in stages I, II, III, and IV, and they’re managed very differently depending upon what stage it is. Myeloma has three stages, stage I, II, and III. But the most important thing is, actually, beyond the staging is what’s called the cytogenetics risk stratification. So, it’s really important when the bone marrow is sent to be sure that it is sent for, kind of, advanced techniques. Because you really want that snapshot of exactly what the genetic profile is, because that gives us information of A) how to treat, and B) prognostic, you know, who will tend to do better or worse based on this information. And even though that may not tell us which drugs to use, specifically, it may say, should we do something like a transplant or not? Should we consider a clinical trial early or not?

Katherine:

I see. How do test results affect treatment choices?

Dr. Richter:

So, test results can affect treatment choices in a number of ways. Probably, the most common one is thinking about the routine blood tests like your CBC or complete blood count and your chemistry, which looks at things like your kidney function. Some drugs tend to have more toxicity to the blood counts. So, if your blood counts are very low, we may choose drugs that don’t lower the blood counts very much.

Kidney function which we, usually, measure by something called the creatinine. Creatinine is made by the muscles and cleared out by the kidneys. So, if your kidneys aren’t working very well, you don’t pee out creatinine, and that creatinine level will rise in the blood. If your creatinine level is high, we may choose certain drugs that don’t affect the kidneys or not metabolized or broken down by the kidneys.

The genetic studies that we use – we’re not quite at this base yet where we can say, if you have this genetic abnormality in your myeloma, we should use this drug except there’s some really great data on the cutting edge about a drug called venetoclax.

Venetoclax is a pill that’s used to treat other diseases like lymphoma and leukemia. And it turns out that people who have what’s called a translocation (11:14) which means part of the 11th chromosome and part of the 14th chromosome in the cancer cells swap material.

Those people respond amazingly well to venetoclax. So, we’re starting to have what we would call precision medicine where we find your genetic abnormalities, not that you got from your parents or passed to your kids, but the genetics inside the tumor cells to tell us which treatments will work best for you.

Myeloma Targeted Therapy: Why Identifying Chromosomal Abnormalities is Key

Myeloma Targeted Therapy: Why Identifying Chromosomal Abnormalities is Key from Patient Empowerment Network on Vimeo.

Charise Gleason, a nurse practitioner, provides insight as to why identifying chromosomal abnormalities is essential when it comes to targeted therapy as a treatment choice for myeloma.

Charise Gleason is a nurse practitioner specializing in myeloma and serves as the Advanced Practice Provider Chief at Winship Cancer Institute of Emory University. Learn more about Charise, here.

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Transcript:

Charise:                       

So, testing for chromosome abnormalities or changes are important when it comes to targeted therapy.

And we used to think of this more in that relapse setting. But we also look at it upfront now, because it tells us more about the path of myeloma. And there are reasons to check throughout at relapse, again, to see if something’s changed. So, with targeted therapy, we can use the translocation (11;14), for instance.

Many patients have a translocation t(11;14). It’s not a high-risk feature. But we know on clinical trial we have a drug that we’re using called venetoclax that those patients can be very sensitive to.

And so, we’re looking at this not just in translocations but in sequencing for other abnormalities or gene mutations that can help guide us with these newer therapies. And you see that across all cancer types at this point. So, you can get very specific with a patient’s type of myeloma – that this drug is going to work better because you have this mutation.

So, we look at it upfront. It guides us for risk stratification: standard risk versus high risk. And then we look at it in that relapse setting. Do we have a drug or a clinical trial that this patient will respond better to because of those abnormalities?

When we’re risk stratifying, we know standard risk, medium risk, and high risk. Those are those translocations, those gene mutations, that we know about.

But newer testing, like sequencing, gives us a lot more mutations that we don’t even know what to do with them all yet.

We don’t necessarily have drugs for all of them, but it does help guide us down the road. So, right now some common are the translocations, but also deletion 17p, which we’ve known about for a while. But maybe you see a BRAF mutation, which you typically associate with other types of cancers, but we see that in myeloma as well.

So, it helps us look at is there a drug that our myeloma patient might benefit from because they have a BRAF mutation, for instance. 

Essential Imaging and Chromosome Tests after a Myeloma Diagnosis

Essential Imaging & Chromosome Tests After a Myeloma Diagnosis from Patient Empowerment Network on Vimeo.

Charise Gleason, a nurse practitioner, explains why tests such as bone marrow biopsy, FISH test and full-body imaging are considered essential for patients after a myeloma diagnosis.

Charise Gleason is a nurse practitioner specializing in myeloma and serves as the Advanced Practice Provider Chief at Winship Cancer Institute of Emory University. Learn more about Charise, here.

See More From INSIST! Myeloma

Related Programs:

Myeloma Targeted Therapy: Why Identifying Chromosomal Abnormalities is Key

Lab Tests in Myeloma: Key Results to Monitor

Key Considerations When Choosing Myeloma Treatment: What’s Available?


Transcript:

Charise:                       

The essential testing that a myeloma patient should undergo following a diagnosis is – obviously, you’ve had those diagnostic test labs, the 24-hour urine, some scans, but the specific things that we need are a bone marrow biopsy.

That includes cytogenetics and FISH, and we can talk a little bit more about that. You also want full-body imaging. We used to always use a skeletal survey, which was an X-ray of the long bones. But, really, the standard of care now is a whole-body scan.

So, depending on what your oncologist or your institution has, that would be a full-body CT scan, a PET-CT scan, or a full-body MRI. So, one of those tests is recommended. It’s not unusual if you have a PET. Like our institution, we use PET-CT. So, for a newly diagnosed patient, we’re also going to get an MRI of the spine for a further snapshot.

What we’re looking for with a full-body imaging is we want to make sure that there aren’t any lytic lesions.

So, with an X-ray, you have to have about 30 percent bone loss before it’s going to show up on an X-ray. So, those traditional X-rays that we used to use could actually miss an active lesion. So, in that diagnosis, we want to know that there is no active myeloma. And those other scans are going to be more specific to that.

So, the cytogenetics of a bone marrow biopsy are going to tell us more about the biology of the disease. So, cytogenetics actually grows out the pairs of cells. And so, that’s why that portion of the test can take a while to get back.

At our institution, it can take two to three weeks, because you’re actually growing out those cells to look at the chromosomes. And remember these are chromosomes, or genes, of the plasma cells. And so, we’re looking for those abnormalities that might be present. So, you think about it more for the biology of the disease.

When we’re looking at FISH, we’re also looking… That test shows a little bit different. It comes back quicker. It shows two different phases of cell changes.

And so, it will tell us about chromosomes as well. But do you have any additional chromosomes – so, that would make it a hyperdiploid narrow. It tells us if there’s a loss of a chromosome – so, you’re missing one, a hypodiploid. It also tells us about translocations – so, when you’ve had a piece of a chromosome change and go to another cell. And so, that, for instance, would be like that translocation t(11;14) or translocation t(4;14). So, it’s essential to have that testing to tell us about that, because it helps guide treatment. And as we talk more about targeted therapy, these things really can come into play.