Tag Archive for: biomarker test results

How Do Biomarker Test Results Impact a Gastric Cancer Treatment Plan?

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How Do Biomarker Test Results Impact a Gastric Cancer Treatment Plan? from Patient Empowerment Network on Vimeo.

What impact do biomarker test results have on gastric cancer care? Expert Dr. Matthew Strickland explains how the identification of biomarkers affect treatment choices and why patients should insist on this essential testing. 

Dr. Matthew Strickland is a medical oncologist at Massachusetts General Hospital. Learn more about Dr. Strickland.

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Transcript:

Katherine Banwell:

Dr. Strickland, how do biomarker test results impact gastric cancer prognosis?  

Dr. Matthew Strickland:

So, biomarkers will directly guide our treatment decisions in how we can assemble the best treatment plan for our patient as an individual. That will have direct ramifications for how well and for how long that therapy can work for.  

So, I would say that there’s a direct correlation between the biomarker analysis to prognosis.  

Katherine Banwell:

Dr. Strickland, how do biomarker test results impact gastric cancer treatment options?  

Dr. Matthew Strickland:

So, for example, depending on the stage…if a patient has a stage IV cancer, PD-L1 expression will guide our treatment decision whether to include immunotherapy typically with a chemotherapy background or not. To say that a different way, if the expression is very low or absent, we know that patient likely will not benefit from immunotherapy and could actually be harmed, because there is some toxicity that comes with these treatments. That’s one example. But similarly for HER2+ patients, we’ll similarly assemble a treatment regimen with a targeted therapy that is included.  

That certainly guides treatment options, specifically based on a HER2-positive result or negative. The next biomarker I want everyone to know about is called PD-L1. That stands for programmed death ligand 1. This is also a protein that’s expressed on the surface of cancer cells.  

That usually leads to a better outcome than for patients that we can’t include a targeted therapy and left relying on chemotherapy only.  

Katherine Banwell:

Dr. Strickland, what questions should patients ask their healthcare team about testing and test results?  

Dr. Matthew Strickland:

Because biomarker status is so critical for treatment decisions and leading to outcomes and prognosis, I would encourage patients to ask their provider if all standard biomarkers have been obtained at the time of their diagnosis. Sometimes that answer is no, but they’re working on it. That’s okay. But I would highly encourage patients to just ensure that standard biomarkers are being tested for, that they will directly guide the treatment recommendations.  

Katherine Banwell:

Dr. Strickland, is there developing research or treatment news that gastric cancer patients should know about?  

Dr. Matthew Strickland:

I think it’s a very exciting time for the treatment of gastric cancer. Now, we still have a lot of work to do. I don’t want to minimize. This is still a tough and can be an aggressive cancer. It’s no time to let up.   

That being said, if we use immunotherapy as an example alone, there’s been a flurry of new approvals for standard of care in the last three to four years. Our understanding is only increasing of how to select the right patients that will benefit as well as how to avoid some of the toxicities. Beyond immunotherapy, there are new and emerging targets that we can design targeted therapy for.  

We don’t yet have mainstream approvals for targets like Claudin 18.2. But this is a very exciting new target that I think will lead to an approval in the short future.  

Considerations That Help Guide Breast Cancer Treatment Decisions

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Considerations That Help Guide Breast Cancer Treatment Decisions from Patient Empowerment Network on Vimeo.

What are key factors that help guide breast cancer treatment decisions? Expert Dr. Bhuvaneswari Ramaswamy explains what is considered and explains the significance of each factor.

Dr. Bhuvaneswari Ramaswamy is the Section Chief of Breast Medical Oncology and the Director of the Medical Oncology Fellowship Program in Breast Cancer at The Ohio State College of Medicine. Learn more about this expert here.

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Transcript:

Katherine:

Another key component of thriving is finding  a treatment that is right for your disease. What are the considerations that guide a treatment decision?

Dr. Waks:

Yeah, great question. So, what we just talked about,  the two things that are very important for us to make a decision, and that’s where we have come far in the last 20, 25 years, is because we are not just taking the staging.

That is anatomical staging, meaning what’s the size of your tumor and the lymph node involvement. We use those. That is important for us because that obviously changes the risk. The higher the stage, the higher risk of   recurrence. The higher the risk, we have to do more treatment to get a benefit, right? So, that’s one side. But what we have come to understand is biomarkers  are very important. That is biology of your tumor.

So, the grade, how quickly it’s proliferating although it’s not a biomarker, but it tells us a lot. And then the three important biomarkers we talked about ER, PR, and HER2. Those all are important for us to make a decision. In addition to that, we do something called a genomic testing called Oncotype  DX assay. There is also another test called   MammaPrint. These are genomic testing.

That is, we look at some of the genes that are up or downregulated in your tumor to decide whether you  are going to benefit for something called   chemotherapy or maybe just targeted therapies enough. So, these are some of the factors that we use to make a decision.

Now, do we use age and your performance status? Meaning how well you are? Do you have   comorbidities? Do you have bad diabetes? Do you have heart disease? Yes, they all go into that whole treatment decision, but the primary is made out of biomarkers and genomic testing and anatomic, and the rest are additional factors that go into our decision-making.

Katherine:

Yeah. What about metastatic disease? Are the considerations different when it comes to treatment?

Dr. Ramaswamy:

It is a little bit different because the first thing that we have to understand is when we are seeing them in stage I, stage II, stage III, which is stage IV is metastatic, stage II – we – our goal is a curator. We are trying to really throw the kitchen sink, although that’s really not what we do. We are trying to still be  tailored therapy, but we are trying to do everything we can to prevent a recurrence.

But now when you have a stage IV disease that is the cancer has   spread, that is the horses have left the  barn in the breast and has gone and settled in distant  organs and gone, our goal is to try to contain the disease. So, prevent further progression, prolong the  life and survival, and also improve quality of life. So, there are those consideration.

The biomarkers still go into consideration. We ensure we biopsy the metastatic site and look for those biomarkers. We do the genomic testing, gene sequencing of this. That will also help with our decision-making. We, of course, look for clinical trials because new novel therapies are always more important, but these are the other factors. And, of course, performance status that is how well you are,  how well your organs are functioning, and what’s your age, and how that affects your morbidity. All of those are also important.

How Do Biomarker Test Results Impact Prostate Cancer Treatment Options?

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How Do Biomarker Test Results Impact Prostate Cancer Treatment Options? from Patient Empowerment Network on Vimeo.

What can biomarker test results indicate about prostate cancer treatment options? Dr. David Wise discusses genetic mutations, treatment classes, and testing methods that are commonly examined to help determine optimal prostate cancer approaches.

Dr. David Wise is Director of Genitourinary Medical Oncology at the Laura and Isaac Perlmutter Cancer Center at NYU Langone Health. Learn more about Dr. Wise.

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Transcript:

Dr. David Wise:

So, that’s a great question. So, there are multiple gene test results that can directly influence a choice of treatment. I think that it’s important to highlight two main categories, both within the genomic testing setting. Both of these test results have their major impact in patients with metastatic prostate cancer, whether the cancer has been treated already and is resistant to current treatments, or even some situations where the cancer has not even been treated.  

For metastatic prostate cancer, I think it’s important to assess whether the cancer has evidence of a BRCA1 or 2 mutation, or whether the cancer has evidence of a genetic feature called microsatellite instability, or MSI high. Cancers that have evidence of BRCA1 or 2 have clear benefit. Patients have clear benefit from treatment that targets those genes. And that’s a class of oral medications called PARP inhibitors, several of which are already FDA-approved for hormone-resistant metastatic prostate cancer with evidence of BRCA1 or 2 mutation.  

There are even newer clinical trials which are testing the use of those medicines at the outset of men who are initially diagnosed with metastatic prostate cancer, even naïve to treatment and testing whether we should be adding on PARP inhibitors for men with that genetic feature.  

Microsatellite instability, as well, leads to a clear FDA indication for immunotherapy with what we call checkpoint inhibitors that target and reinvigorate the body’s immune system. We know that prostate cancers with that particular genetic feature, which unfortunately is still an uncommon type of prostate cancer – but when it happens, it’s important to know about it because those immunotherapies can have truly life-changing, truly very long lasting, in the order of years, benefit to keeping that cancer to an undetectable level. Now, I would say, those are the key genomic features that directly translate to changes in treatment.  

There are other biomarkers, one we haven’t talked about which is very impactful, which is levels of PSMA expression on a PET scan. So, we talked about that in the setting of making a diagnosis, but it also is important for dictating best treatment. So, we now know, based on the results of a large Phase III trial that patients with prostate cancers that have PSMA uptake on PET imaging, which is an imaging biomarker, not a genetic biomarker, but an imaging biomarker.  

Those patients respond quite well to lutetium PSMA, which is a radioligand therapy that targets PSMA-producing prostate cancers. And so, those are examples of, I think, very impactful biomarkers that patients need to know about, so that they can ask their physicians to get tested to see if they’re candidates for those potential treatments.  

So, the genetic tests can be done either on biopsy material or on blood. And the latter has really been a major advance because we’ve been able to identify patients who are eligible without exposing them to an additional fresh biopsy. Sometimes, we need to because sometimes the blood does not have sufficient material to be able to establish the diagnosis. But still, it is often worth trying because, of course, we would try to do anything to avoid undergoing a risky procedure, and this is an example of that. In order to assess hereditary genetic risk, that can be done from a saliva sample. So, often, a cheek swab is enough, but testing for that is often pretty standard as well. So, that’s another option.  

So, in order to assess PSMA expression, which lends itself directly to the use of lutetium PSMA, that’s the straightforward PET scan. It’s now something that is readily available at the vast majority of academic centers and in the community as well. 

How Do Biomarker Test Results Impact a Prostate Cancer Patient’s Prognosis?

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How Do Biomarker Test Results Impact a Prostate Cancer Patient’s Prognosis? from Patient Empowerment Network on Vimeo.

How can a prostate cancer patient’s prognosis be impacted by biomarker test results? Dr. David Wise shares insight about biomarkers that are important in determining higher risk prostate cancer.

Dr. David Wise is Director of Genitourinary Medical Oncology at the Laura and Isaac Perlmutter Cancer Center at NYU Langone Health. Learn more about Dr. Wise.

See More From INSIST! Prostate Cancer

Related Resources

What Is a Prostate Cancer Biomarker

What Is a Prostate Cancer Biomarker?

Prostate Cancer Testing: What Tests Should You Advocate For?

 How Do Biomarker Test Results Impact Prostate Cancer Treatment Options

How Do Biomarker Test Results Impact Prostate Cancer Treatment Options?

Transcript:

Dr. David Wise:

Great question. So, every biomarker needs to be considered independently.   

And whether it adds additional prognostic information to the other variables that we’ve already collected. And so, there are a few different biomarkers that we can discuss. I think that perhaps the most well-known, and in some sense very important one, is the one I mentioned before, which is the abnormal BRCA2 gene test results.  

So, patients who have that hereditary genetic mutation with BRCA2, we do have evidence that those cancers at diagnosis tend to have a higher Gleason score. They tend to be higher risk. Those cancers are still curable. Those cancers are still very treatable, but they tend to be less common in that low-risk category. So, we tend to be, at times, a bit more reluctant to manage patients with BRCA2 with surveillance alone, because their cancers typically need more intensive treatment.