Tag Archive for: gastric cancer testing

How Can You Access Personalized Medicine for Gastric Cancer?

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How Can You Access Personalized Medicine for Gastric Cancer? from Patient Empowerment Network on Vimeo.

What is the right therapy for your gastric cancer? This animated video reviews treatment decision considerations, how results of essential testing may impact therapy, and advice for engaging in your gastric cancer care. 

See More From INSIST! Gastric Cancer

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

Transcript:

Advances in gastric cancer research are leading to more targeted treatments and giving patients access to personalized care. Personalized medicine – or precision medicine – is a type of care that is based on the genetic makeup and individual characteristics of your disease.  

Biomarker testing identifies key markers such as genes, proteins, or other molecules in a sample of tissue, blood, or other bodily fluid. The test results help the healthcare team better understand your cancer and may influence treatment options – leading to more tailored options with potentially fewer side effects.  

For example, if the PD-L1 receptor is detected during biomarker testing, you may benefit from immunotherapy. The tumor’s HER-2 status or mismatch repair protein expression status may indicate that you may respond well to a targeted therapy. And, treatment targets continue to be identified as research moves forward.  

When deciding on a treatment approach, physicians may consider factors such as: 

  • Your age, overall health, and any pre-existing conditions. 
  • Your type and stage of gastric cancer. 
  • And your test results, including biomarker testing. 

So, how can you partner with your doctor to guide a personalized treatment approach for YOUR gastric cancer? 

  • First, seek a gastric cancer specialist to lead your care. A second opinion consultation with a specialist can confirm your diagnosis and treatment plan. 
  • Ask your doctor if you have had, or will receive, all essential testing, including biomarker testing, and discuss if there are any markers that impact your risk, prognosis, or treatment options.  
  • Inquire about clinical trial options suited to your specific cancer and biomarker test results. 
  • Discuss the potential side effects of each treatment option and ask if any of your existing health conditions may impact your choices. 
  • Include a care partner, such as a friend or loved one – someone you trust – in discussions, so you can feel confident in your decisions.  
  • And finally, always speak up and ask questions. Remember, you have a voice in YOUR gastric cancer care. 

To learn more about your gastric cancer and to access tools for self-advocacy, visit powerfulpatients.org/gastric.  

How Is Gastric Cancer Biomarker Testing Conducted?

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How Is Gastric Cancer Biomarker Testing Conducted? from Patient Empowerment Network on Vimeo.

Biomarker testing is essential for gastric cancer patients, but how is it conducted? Expert Dr. Matthew Strickland explains the methods of biomarker testing and the common biomarkers associated with gastric cancer.

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

See More From INSIST! Gastric Cancer

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Transcript:

Katherine Banwell:

So, how is biomarker testing conducted? Is it via a blood test?  

Dr. Matthew Strickland:

This is also an excellent question. Biomarkers can often be tested in different ways. Most of the biomarkers that I’ve outlined start by being tested via cell surface expression of those proteins. Basically, that translates to once the biopsy of the tumor is taken out and is now in the pathology lab, a pathologist can apply different stains to identify these proteins and biomarkers.  

Then, they can assess, in other words, quantify the level of expression. This method is called immunohistochemistry. I would say it’s a fair statement to think this is a first pass method of detecting biomarkers.  

But it’s not the only one. Beyond that…there’s, for example, HER2 can sometimes reflex to assessing the copy number of the gene. So, we’re no longer talking at the protein level. Right now, we’re talking about using a method…the acronym is FISH, which stands for fluorescence in situ hybridization. This is a method to quantify the number of copies of the gene.  

If the cancer has indeed overexpressed HER2 to gain a growth advantage, then often we’ll see a very significantly high copy number. Then, to address your question regarding biomarkers detected in the blood, this is also a new area, relatively new. We know that there are fairly effective tools to test for circulating tumor DNA.   

Backing up for a moment, cancer cells can – let me rephrase. Cancer cells will to some degree shed their DNA into the bloodstream. We are able to detect that unique DNA to some degree. So, these tools, which are generally called circulating tumor DNA assays, there are different companies. The names of their products can be different. But they’re becoming increasingly effective at detecting tumor DNA in the blood.  

So, there are several approvals for these tools. But this can get a little bit tricky. Because the tools are so new, they’re not yet integrated into our standard management. So, perhaps, at larger cancer centers you might see providers utilizing these tools, but it might not be offered at every location.