Tag Archive for: FISH testing

AML Diagnosis | Exploring Bone Marrow Biopsy and Alternatives

AML Diagnosis | Exploring Bone Marrow Biopsy and Alternatives from Patient Empowerment Network on Vimeo.

What are the purpose and alternatives to bone marrow biopsy? Expert Dr. Sara Taveras Alam from UTHealth Houston explains what’s involved in bone marrow biopsy, what is analyzed, patient advice for the procedure, and alternative testing methods.

[ACT]IVATION Tip

“…ask the providers what to expect from the bone marrow in the facility where you are in. Usually in all facilities, lidocaine, or local anesthesia is used, but if you foresee that in general, you are anxious about procedures or susceptible to pain, you are welcome to request for some medications for pain and anxiety to help you get through that procedure, and generally, once patients have undergone a first bone marrow biopsy, they know what to expect and what accommodations may be needed for them in subsequent bone marrow biopsies.”

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Transcript: 

Lisa Hatfield:

Dr. Taveras, what specific features are pathologists looking for in the bone marrow sample when diagnosing AML, and are there any alternative diagnostic methods or tests available for AML besides a bone marrow biopsy?

Dr. Sara Taveras Alam:

And that is a great question. I think that many patients may be scared of what bone marrow biopsy entails. It is a procedure after all, and it can be painful. I do know that they’re able to get some details about the diagnosis from the peripheral blood just from blood tests alone; however, the best diagnosis is performed through the bone marrow biopsy, so it can provide more information about the email, than what we’re able to obtain from the blood, sometimes the blood count, the white blood cell counts are elevated in AML and that may make it easy to do some of our testing from the blood work, but in other patients, the white blood cells may be low at presentation and that can make it very difficult to obtain any meaningful diagnostic and prognostic information without a bone marrow biopsy.

The bone marrow biopsy would also allow to tell if the patient had a preceding blood disorder like a myeloid dysplasia and this may have treatment implications. This is not something that we would be able to tell from the blood alone unfortunately, so when our pathologists look at the bone marrow sample, they are looking at some of the blood that is obtained from that boom marrow space where the blood is produced, and a tiny piece of the bone from there as well, and they’re looking at the amount of cells, especially the normal red cells, the normal white blood cells, normal platelets, and specifically the abnormal white blood cells or blasts that are quantified in a percentage fashion to diagnose the AML.

There are also different types of blasts, so they may be able to sub-classify the AML from just looking at the morphology or how these cells look under the microscope. There are many ancillary tests that are performed on the sample as well to look into the genetics for the driving forces behind the acute myeloid leukemia.

We look at a chromosome analysis to see what the chromosomes are for the leukemia. We look at mutations during FISH testing, and we do molecular testing that are looking at specific point mutations that may be associated with AML and provide insight into the treatment options as well as the prognosis, the patient’s disease, and whether or not they may benefit from a stem cell transplant to increase the chances of maintaining a remission and obtaining a cure.

My advice for patients who may be anxious about the bone marrow biopsy would be to voice their concerns for their providers. I believe that different centers have different practices as it relates to pre-medication, so some places may provide anxiety medications and pain medications in advance of the procedure, but some other facilities may not. So my activation tip for this question is to ask the providers what to expect from the bone marrow in the facility where you are in.

Usually in all facilities, lidocaine, or local anesthesia is used, but if you foresee that in general, you are anxious about procedures or susceptible to pain, you are welcome to request for some medications for pain and anxiety to help you get through that procedure, and generally, once patients have undergone a first bone marrow biopsy, they know what to expect and what accommodations may be needed for them in subsequent bone marrow biopsies.

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Thriving With AML | Advice for Setting Goals and Making Treatment Decisions

Thriving With AML | Advice for Setting Goals and Making Treatment Decisions from Patient Empowerment Network on Vimeo.

When facing an acute myeloid leukemia (AML) diagnosis, treatment decisions may feel overwhelming. AML specialist Dr. Alice Mims shares expert guidance for setting treatment goals with your team, advice for making care decisions, and explains how tests results may impact choices.

Dr. Alice Mims is a hematologist specializing in acute and chronic myeloid conditions. Dr. Mims serves as the Acute Leukemia Clinical Research Director at The Ohio State University Comprehensive Cancer Center – James. Learn more about Dr. Mims.

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Transcript:

Katherine Banwell:

One part of thriving with AML is finding a treatment approach that manages your disease and fits with your lifestyle. Before we talk about therapy, can you tell us how treatment goals are established for an individual patient? 

Dr. Alice Mims:

Sure. So, for individual patients, I think it’s very important that there is an initial discussion that doesn’t feel too shortened that you can have time with your care team to really go into depth about the diagnosis, about the specifics of your particular subtype of acute myeloid leukemia, understanding the treatment options, and then being given time allowed to reflect on all of that information. So, then you can come back and have your questions better answered that may come from that initial discussion. 

And then help you with your team make a decision based on that information that works best for you.  

Katherine Banwell:

Outside of patient preference, what other factors do you take into account when working with a patient to decide on a treatment plan? 

Dr. Alice Mims:

Sure. So, there are multiple different factors that we try to take into account. Again, yeah, most importantly what patients’ goals are like you mentioned, but those include overall health, including different comorbidities, so what other healthcare diagnoses, medications are you taking, what are the patients’ age, thinking about that for long-term goals, overall support from loved ones, family to — just because care can be really involved. And then in particular, thinking about specific features of that individual patient’s AML, including molecular, genetic features of the leukemia. 

Katherine Banwell:

Well, let’s talk more in depth about the test results you just mentioned. 

What is the test for genetic markers? And how is it conducted? 

Dr. Alice Mims:

So, there are a few different tests that we use under that scope of genetic markers. So, those include looking at chromosomal abnormalities of the DNA. So, with cytogenetics, and then also more specific prose where we call FISH testing. And then also we look for specific gene mutations through next-generation sequencing, or PCR testing. And so, we use all of those results together to give us the most information we can about that individual’s leukemia. 

Katherine Banwell:

How has molecular testing revolutionized AML care? 

Dr. Alice Mims:

Oh gracious. It’s really done such – so much for leukemia. And just things are so different even where they were five years ago because of having molecular mutations, that information available. 

So, it helps with discussing prognosis. So, we know that different molecular features can tell us about curative intent and what are the treatment steps we would need to take to give the best chance long-term. And then also now, we’ve evolved to where we have directed therapies that can target mutations or the proteins that arise from those mutations with therapeutic options. 

Katherine Banwell:

Is this testing standard following an AML diagnosis? 

Dr. Alice Mims:

It is standard following an AML diagnosis. That’s recommended within all of the guidelines with patients and really should be done for all patients at initial diagnosis. 

Katherine Banwell:

Can genetic markers or mutations change over time? For example, if a patient relapses, should molecular testing be done again? 

Dr. Alice Mims:

Yes, absolutely. Mutations can evolve. It’s something we call clonal evolution of the leukemia. 

And so you can have mutations that could be present at diagnosis that may no longer be present. Or the opposite can occur where you have new mutations that can appear. And that can lead to different options for treatment. So, it’s very important to retest at time of relapse.  

Katherine Banwell:

What advice do you have for patients who want to ensure that they’ve actually undergone molecular testing? What questions should they be asking their healthcare team? 

Dr. Alice Mims:

I think it’s definitely important to bring this up with the healthcare team. And it should be something at diagnosis and relapse to ask, what are the cytogenetics, what do they look like now, what do the gene mutations, and really as mentioned before, it’s so crucial in talking about prognosis, talking about treatment options that if it doesn’t come up, it’s really something that you should take a pause and try to go back to readdress with your team.  

What Is the Purpose of AML Genetic Testing?

What Is the Purpose of AML Genetic Testing? from Patient Empowerment Network on Vimeo.

How is genetic testing for AML administered, and what is the purpose? Dr. Sanam Loghavi explains the methods of genetic testing and the function of each method.

Dr. Sanam Loghavi is a hematopathologist and molecular pathologist at The University of Texas MD Anderson Cancer Center. Learn more about Dr. Loghavi.

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Transcript:

Katherine Banwell:

Dr. Loghavi, let’s start by defining molecular or genetic testing for AML. How is the test administered, and what is the purpose? 

Dr. Sanam Loghavi:

Sure. So, genetic testing at diagnosis of acute myeloid leukemia is now considered standard of care, and it must be performed for every patient with acute myeloid leukemia.  

We have different methodologies of doing genetic testing, and we can use – so the best sample to perform genetic testing on is really bone marrow. But if there are circulating leukemic cells, then we can also use peripheral blood instead of bone marrow. 

And the genetic tests really three main methodologies are used. One is called routine karyotyping, where we look at and characterize the chromosomes of the cancer cells for the leukemic cells. The other one is fluorescence in situ hybridization, which is another method for visualization of chromosomes, and we can look for deletions, addition of chromosomal material or certain translocations or rearrangements.  

And then next-generation sequencing allows us to look for smaller changes at the DNA level. So, these are single nucleotide variations at the DNA level or smaller insertions or deletions of genetic material.  

How is Multiple Myeloma Staged?

How is Multiple Myeloma Staged? from Patient Empowerment Network on Vimeo.

How is staging used in multiple myeloma? Watch as expert Dr. Abdullah Khan explains staging and its use, and myeloma patient and Empowerment Lead Lisa Hatfield shares how the use of staging and its factors have evolved over time.

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Transcript:

Healthcare professionals use a combination of lab test results, imaging tests, and bone marrow exams to determine the stage of multiple myeloma. The revised International Staging System or Durie-Salmon Staging System may be used in determining a patient’s multiple myeloma stage. 

Dr. Abdullah Khan:

The patients are assigned stages I to III. To determine the ISS you need lab values for the beta-2 microglobulin and albumin. For the revised ISS, you add on the lab value for LDH, lactate dehydrogenase, and you also add in the chromosome risk profile. So, there are certain genetic changes that predict a more aggressive myeloma. And the ones added to the revised ISS staging system are translocation 4;14, translocation 14;16, and deletion 17p.” 

Lisa Hatfield:

So staging with multiple myeloma is really unique. A lot of times people think that every cancer has four stages. That is not true with myeloma. There are three stages for myeloma. And even now as of this year, some providers, some oncologists are not even staging myeloma. They’re looking at the risk factors, the cytogenetic risk factors to see if you’re standard risk or high risk. They’re not even using the staging system. It’s interesting. Back when I was diagnosed back in 2018, there were two staging systems used. One was the Durie-Salmon scale. I was diagnosed as stage III, which is the highest level. Mine was based on the fact that I had a lot of bone lesions and bone involvement.

But there’s also one called R-ISS, the revised ISS staging. And that one I was staged at stage I. So it’s really important to get a myeloma specialist on board quickly, because my myeloma specialist explained why I had two different stages I was staged at. She used the R-ISS, the more current system, the stage I and also looked at my cytogenetic risk factors. So your doctor will talk to you about FISH testing. And FISH testing might show something like translocations in the myeloma cells themselves or genetic abnormalities in the myeloma cells themselves. And that helps them dictate also what your risk will be going forward and how to treat that, how to treat your myeloma as a result of those risk factors and the stage you’re diagnosed at.

Your care provider may use other criteria in determining a person’s best optimal treatment. Make sure to ask if you have additional questions.

Will Myeloma Patients Need Fewer Biopsies in the Future?

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.

How Does Biomarker Testing Impact DLBCL Treatment Options?

How Does Biomarker Testing Impact DLBCL Treatment Options? from Patient Empowerment Network on Vimeo.

Biomarker test results may help guide diffuse large B-cell lymphoma (DLBCL) treatment options. Expert Dr. Loretta Nastoupil explains how biomarkers are currently used in determining an optimal treatment approach and how research efforts could help create more precise treatments.

Dr. Loretta Nastoupil is Director of the Lymphoma Outcomes Database in the Department of Lymphoma/Myeloma at The University of Texas MD Anderson Cancer Center. Learn more about Dr. Nastoupil, here.

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Transcript:

Katherine:

What about biomarker testing results?

Dr. Nastoupil:

So, in a perfect world, we would be able to take a patient’s specific tumor, sequence it, and provide a recipe or a solution to solve the problem. And that’s what a biomarker is.

It’s something that’s unique to the patient’s given tumor that then would inform what is the best treatment. So, we’re lacking in some ways a perfect scenario. What we do have, as what I’ve mentioned, some molecular studies where we can look for specific genes or rearrangements in the genes that may help us predict the future.

And in diffuse large B-cell lymphoma, one of the most common examples of this is what we call double hit where we’re looking for two genes – MYC, which is M-Y-C, and either BCL-2 or BCL-6. These are genes that we all have. It’s just the lymphoma has moved these genes into sort of more of a prime real estate location that makes it a little bit more resistant to standard treatments.

So, if you move those genes in that tumor DNA, we call that our rearrangement. And we pick that up based off a FISH study. And if both of those features or all three of those features are there, we call it a double or triple hit.

That’s a potential biomarker that may suggest that particularly R-CHOP or standard treatment may not be the best strategy. There’s some limitations to that conclusion in that that’s not true for every patient. For about 20 percent to 30 percent of patients with double hit features, they’re going to do really well with R-CHOP.

So, that’s why we are lacking in how effective these biomarkers are. And it would be great if we had additional biomarkers that were more precise or could tell us more than just that the standard may not be optimal.

So, that’s where we’re spending a great deal of time and effort in our research efforts just trying to identify biomarkers that may tell us what’s the best approach for a given patient or what we like to call personalized medicine. 

How Can CLL Patients Insist on Better Care?

How Can CLL Patients Insist on Better Care? from Patient Empowerment Network on Vimeo

How can chronic lymphocytic leukemia (CLL) patients insist on better care? Dr. Lindsey Roeker shares key advice for discussing testing and provides important questions to ask your doctor for the best care for you.

Dr. Lyndsey Roeker is a hematologic oncologist at Memorial Sloan Kettering Cancer Center. Learn more about Dr. Roeker here.

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Transcript

Katherine:                  

Patients should insist on essential CLL testing. It’s important to point out that some patients may not know if they’ve received these important tests, so how can they take action?

Dr. Roeker:                 

So, the next time you’re at your doctor, ask, “I just want to know more about the prognosis of my CLL, and can we talk through the genetic markers of my disease, to help me understand what to expect?” That’s kind of code for, “Let’s go through all of these test results,” and it also – if you have a provider who doesn’t routinely test them at diagnosis, and for instance, just tests before treatment, they can also kind of give you their sense of when they do the testing, so you know what to expect. And I think that’s an important discussion to have with your provider, for sure.

Katherine:                  

Are there key questions that patients should ask their physicians?

Dr. Roeker:                 

I’m always impressed with the questions that people come up with. I think one of the best is, what should I expect, based on what we’re doing now? It’s always a hard question to answer because, obviously, for any patient, it’s so individualized, but I think understanding what to expect, as a general sense, is a good way to approach both treatment and prognosis, and all of those kinds of things.

What Tests Should CLL Patients Insist They Receive?

What Tests Should CLL Patients Insist They Receive? from Patient Empowerment Network on Vimeo.

Which chronic lymphocytic leukemia (CLL) tests are most critical in CLL care? Dr. Jennnifer Woyach details the key tests, what the tests identify, and how they help provide optimal care personalized to each patient.

Dr. Jennifer Woyach is a hematologist-oncologist specializing in chronic lymphocytic leukemia (CLL) at Ohio State’s Comprehensive Cancer Center – James Cancer Hospital & Solove Research Institute. Find out more about this expert here. 

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Transcript:

Katherine:                  

The goal of this program, Dr. Woyach, is to provide the confidence and tools for patients to advocate for the essential tests to get the best care personalized to them. Are there specific tests that patients should make sure they have?

Dr. Woyach:               

Yeah. In CLL, I would say there are three that are very, very important before starting treatment. The first is something called the IGHV mutational status.

What that is defined as is the changes in the variable region of the immunoglobulin heavy chain. That’s a big mouthful that doesn’t mean a lot to most people. So, I’ll give you just a little background on what that really means biologically and then, what that means clinically. So, every B lymphocyte, so a normal B lymphocyte and a CLL cell, has receptors on the surface of the cell that allow it to interact with the environment. And in a normal B lymphocyte, this is really important for the immune system. So, bacteria, virus, something is in the body and the B cell surface receptor is going to be able to recognize that that’s not supposed to be there and then, do something about it.

In CLL, the surface receptors don’t do a lot of interacting with the outside environment but they’re still present there. And in a normal B cell development, the B cells are initially formed in the bone marrow.

And at the time that they’re formed, every one of those receptors is exactly the same. So, we can do DNA sequencing on those receptors and you’ll see that every one is identical. So, during a normal development of a B cell, it undergoes this process that’s called somatic hypermutation, which is where those receptors mutate or change. And that’s important because then, they can recognize different things. And so, you end up with this whole repertoire of thousands or millions of B cells that all are a little bit different and can recognize something different.

So, CLL cells, they’re all clonally related to each other. They’re all going to have the same receptor on their surface. And about 60 percent of the time that receptor is different than the newly born B cells. And so, this is probably a little bit more simplistic than it actually is. But the way we think about that is that those B cells or those CLL cells, which we call mutated because they underwent that mutational process, we think that that means that they come from a more mature initiating cell.

And they tend to be less aggressive, more slow growing. The other 40 percent of patients, if you look at the receptor on their surface, it’s exactly the same as the new B cells in the bone marrow. And we call those IGHV unmutated because they haven’t done that mutational process. And they behave very differently. So, in mutated CLL, only about half of people will ever need therapy in their lives. An average time from diagnosis to first treatment is about 10 years. In contrast to those patients who have unmutated IGHV, basically, all of those people will need therapy at some point in their lives. And average time from diagnosis to first treatment is about three years.

So, you can see how it really breaks people up into two very different categories of disease.

So, that’s the first test and one that’s really important. That’s also one that doesn’t change during the course of the disease. So, if somebody is diagnosed with mutated CLL, it’s always mutated. So, the next marker that’s important is, actually, chromosome changes. So, we know that there are a few different recurrent chromosome abnormalities in CLL that are common and important prognostically. So, one of these is a deletion of part of chromosome 13. It’s called a 13q deletion. It indicates, again, very slow-growing CLL. Patients how have normal chromosomes also are very good disease biology.

Some people have an extra copy of chromosome 12. That’s called trisomy 12, and that’s an intermediate marker. And then, there are two markers that are associated with a little bit more aggressive CLL. One is a deletion of proto chromosome 11. That’s called an 11q deletion.

And the other one is a deletion of proto chromosome 17 called a 17p deletion. These are all abnormalities that are important to test for. And the way that we test for these is something called FISH testing. And FISH stands for fluorescence in situ hybridization. And it’s a way to use an antibody to look for specific abnormalities in the CLL cells. So, that’s important. And another thing that can be done at specialized centers is something called stimulated cytogenetics. So, I mentioned to you with FISH testing, we’re looking for specific abnormalities with antibodies. But the things that we don’t test for we’re not going to see.

So, if they have a chromosome change that we don’t have an antibody looking at, we’ll never detect it. And we know that patients with CLL who have what’s called a complex karyotype, which is three or more chromosome abnormalities, they also have more aggressive disease.

So, like I said, at specialized centers, we can do what’s called a stimulated karyotype, which is where we look at all of the chromosomes. So, that’s FISH testing and karyotype. And then, the last thing is, actually, doing DNA sequencing for a specific mutation called a TP53 mutation. And TP53 is an important tumor suppressor protein. And it is mutated quite commonly in CLL. About 8 to 10 percent of patients at the time of first treatment and, actually, up to about 40 percent of people later on in the course of the disease. Most of the time, we see TP53 mutations occur at the same time as 17p deletions. About 80 percent of the time, those occur together but they can occur on their own.

So, that’s the third test that’s often helpful, especially prior to starting treatment.

Katherine:                  

Do patients need to be retested over time?

Dr. Woyach:               

Yeah. So, for the TP53 mutation and for FISH, it’s important to test for those before each line of therapy. Because those are so important in indicating disease biology and, specifically, with the 17p deletion and TP53 mutation, those indicate patients that are likely to not have as good of a response to treatment. It’s always important to check for those prior to therapy.