National Cancer Institute (NCI) shared on LinkedIn:
“I tend to worry that in our excitement for new frontiers in oncology, we can often oversimplify cancer’s complex biology. A prime example is the microbiome, which is too often reduced to a flat label of ‘good’ or ‘bad’ gut or oral bacteria.
As a scientist, I know the microbiome doesn’t work that way. It is a dynamic, living ecosystem, one that may influence our general health, but also cancer risk, tumor growth, response to immunotherapy, treatment toxicity, and recovery.
That makes the microbiome a fascinating and important area of cancer research that demands scientific rigor. We cannot rely solely on associations, or what one incident leads to another. We need to uncover the precise biological mechanisms of how microbes in the gut or oral cavity interact with human cells. We need reliable, reproducible methods for collecting and analyzing samples. And we need to be careful not to get ahead of the evidence with premature clinical advice.
I am excited about the microbiome work NCI is supporting. NCI-funded research projects are helping define how gut microbes shape antitumor immunity. They’re studying how microbiome diversity impacts survival after a patient undergoes a stem cell transplant and showing how oral and gut microbiomes may differ in cancer risk across populations. NCI is hosting a meeting to address these questions in the near future-we will share more details soon.
The future of precision oncology will require understanding the entire tumor ecosystem, looking at each patient’s cancer, immune system, exposures, and microbiome together.
– Anthony Letai.”
You can also read: Can Diet and the Gut Microbiome Improve Immunotherapy Response?
Anthony Letai was recognized among OncoDaily’s The 100 Most Influential People in Oncology in 2025, highlighting his contributions to the field of oncology.
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