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Essential Testing | Optimizing AML Care With Personalized Medicine

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Essential Testing | Optimizing AML Care With Personalized Medicine from Patient Empowerment Network on Vimeo.

Personalized acute myeloid leukemia (AML) care is becoming increasingly common, but how does it work? Dr. Ann-Kathrin Eisfeld defines personalized medicine and reviews the testing that should take place to help create an individualized treatment approach for patients.

Dr. Ann-Kathrin Eisfeld is Director of the Clara D. Bloomfield Center for Leukemia Outcomes Research at The Ohio State University and a member of the Leukemia Research Program at the OSUCCC – James. Learn more about Dr. Eisfeld.

See More From INSIST! AML

Related Resources:

AML Targeted Therapy: How Molecular Test Results Impact Treatment Options

 What Is the Purpose of AML Genetic Testing

What is the Purpose of AML Genetic Testing?

 How Have Advances in Testing Impacted AML Care

Transcript:

Katherine Banwell:

How would you define personalized medicine as it relates to AML care? 

Dr. Eisfeld:

I define personalized medicine in AML as have a complete testing at time of diagnosis that consists of not only the morphology of the bone marrow, but we call immunophenotyping, which is looking at the surface markers, but also full review of all the chromosomes, which is called cytogenetics. And with those metaphase testing, I’m looking really at all of them and at the hot spots, which is done by a technique called FISH.  

And then most importantly, for personalized testing, it also needs to consist of testing the most common, recurrent gene mutations. Changes in the tumor DNA that we know are contributing to the disease biology and also to the response of the leukemia to different genes. 

Katherine:

I imagine that personalizing therapy for a patient requires a number of tests and then thorough review of the test results. Could you provide an overview of the tests necessary to help understand a patient’s specific AML? 

Dr. Eisfeld:

Yes. Absolutely. There are multiple things that go in. And let me –even before we go into the tests – point out one thing. Because as we talk about individualized care – and it is also important to keep in mind that it will be also dependent on the age and of the performance status of the patient. 

Because we know that all the changes that are going to be reviewed might be more or less severe depending on really the age of the patient we are discussing. The most critical aspect for every AML patient is a bone marrow biopsy and a bone marrow aspirate on which the testing that I have been referring to are performed.  

One, it gives us information about how the – after review of the hematologist, it gives us information about the specific kind of the leukemic cell.  

And very importantly – and this is a very more recent development that we know about that’s important. It also tells us whether the acute leukemia is really happening as an acute leukemia or whether the patient without knowing it before might have had a precursor issue. And this is something that by now really in just about half a year we can use in addition to direct treatment.  

So, it seems like an ancient thing that we think that the microscopic review is important. But that is one part of it.  

The second part – and this is, again, all based on the bone marrow biopsy. The inspection of chromosomes, as I mentioned, may be called cytogenetics. This test takes longer. It sometimes takes up to two weeks to result. And similar, looking at the tumor DNAs and mutations that is done either if you’re at a large institution such as Ohio State or other cancer centers. It’s done in house. Whereas at smaller institutions, it would be done by a sent-out testing that has these recommended gene mutation testings done. And some of those result just within a couple of days.  

And these are – but we can talk. And I know we are going to talk a little bit more about it later, but we now have targeted therapies available. This is a really super exciting topic we couldn’t have talked about just even five years ago. And those mutations and those DNA changes come back usually within three to five days.  

So, that we are able to decide on treatment. 

Katherine Banwell:

How can someone ensure they’re getting an accurate diagnosis? 

Dr. Eisfeld:

That’s a very good question. I think the most important part is to go to somebody who has seen acute leukemias as a living. It is a very rare cancer as you know. And if you are seen even by a general oncologist who might be a fantastic oncologist, he might just see one or two cases per year. And thus, might not be up-to-date on the newest recommendations. So, I can just advise anybody – even if he lives further away and trusts his physician a lot – to – for the diagnosis and for treatment planning, come to a comprehensive cancer center, at least for a therapy planning. Because what is now possible is many of these treatments is that we can just give advice.  

And then you can still receive treatment in some cases really back at home. But be sure the testing was done correctly. And really give you every option to take into consideration what the best treatment would be for you, what the best treatment is for the patient. Having this trip – which can be hours of a drive. And I appreciate this. Having that done once would be, I think, the best thing to do. 

What Should You Know About CLL Genetic Testing?

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What Should You Know About CLL Genetic Testing? from Patient Empowerment Network on Vimeo.

In chronic lymphocytic leukemia (CLL) diagnosis and disease management, genetic testing plays a key role. Dr. Jennifer Woyach explains what is examined in CLL genetic testing, the timing and administration of testing, and testing advances.

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. 

See More From INSIST! CLL

Related Resources

 

Could CLL Be Inherited?

What Tests Should CLL Patients Insist They Receive?

What Does It Mean to Have High-Risk CLL?
 

Transcript:

Katherine:                  

Before we get deeper into our conversation about genetics, there are a few terms that patients are often confused by. As a primer, I thought we could start by defining some of these terms. First, what is genetic or molecular testing?

Dr. Woyach:               

So, all cancer cells will have a collection of mutations or abnormalities in the DNA that either make the cell a cancer cell or make it behave in a certain way. And so, these mutations are referred to as the genetic abnormalities of the CLL cells. So, when we talk about genetic testing in CLL, we use it to mean a number of things. We can use it to look specifically for types of mutations so types of genetic abnormalities.

 We also sometimes use that as a kind of catch-all term like genetic or molecular testing also to refer to looking at changes in the chromosomes inside of a CLL cell. That’s also called cytogenetic testing. And then, we also use a number of tests in CLL where we look at specific, not necessarily abnormalities, but just changes in the cell that can indicate a certain type of behavior.

Katherine:                

How is this different from genomic testing?

Dr. Woyach:               

So, genetic and genomic testing, I think, are usually used interchangeably. But sometimes, we use them in different contexts but they really mean the same thing in this case.

Katherine:                  

Okay. And what is a chromosome change?

Dr. Woyach:              

So, as you might remember from biology class maybe a long time ago, as it was for me, inside a cell, so a normal cell or a cancer cell, you have the nucleus, which holds the DNA.

And the DNA is organized into chromosomes. And so, when a cell goes through division, it takes those chromosomes, copies them and then, breaks them apart into two different cells. So, changes can happen in the level of the DNA itself. So, a mutation where one base is changed to something different. So, that would be just like a single nucleotide change. And that’s something you’re not going to see as a change to a chromosome. Another thing that can happen in CLL and in other cancers, too, is that during that process of cell division, an entire chromosome could be duplicated. It could be absent.

More commonly, parts of chromosomes can change. This is all because cancer cells just do a very poor job of editing their division.

An in normal cells, there are multiple steps along the way from the process of copying the genes to copying the chromosomes to doing the division. And every step along the way, if something happens incorrectly, which happens a lot, the cell usually just dies. But a cancer cell is not going to do that because it has so many signals that keep telling it to stay alive that it can tolerate a lot of different abnormalities. And so, you end up with cells that are just very different from what you would see normally.

Katherine:                  

All right. Well, that’s a great way for us to start. Let’s go into the discussion of the relationship between testing and CLL. How is testing administered?

Dr. Woyach:               

So, almost all testing, in terms of molecular genomic testing in CLL, can be done on a blood sample. So, that’s one important thing.

The CLL guidelines recommend that testing for certain prognostic factors be done before the administration of therapy. So, at the very least, before somebody starts treatment, they should have these tests performed. In my practice and I think most CLL specialists find it really helpful to do these tests, not necessarily just at the time of treatment but really at the time of diagnosis or the time we first see the patient because CLL is a very heterogenous disease, which means that it behaves very differently in different people. So, there are some people that are diagnosed and will go 10 or 20 years before they need any treatment.

And many don’t need treatment at all. Whereas other people are very likely to need treatment within the first few years after diagnosis. Some of the genetic tests that we do can help counsel patients on where they’re likely to fall in that spectrum.

And so, I think that’s helpful for people to know early on in the disease course. But really, the tests can be performed at any time before treatment

Katherine:              

Have there been advances in testing?

Dr. Woyach:               

Absolutely. I think in every cancer, we’ve learned so much more about the biology of the disease, specific mutations that cause specific behaviors of cells, and really much more in CLL about the common genetic changes and what those means to response to therapy.