Genetic study and colorectal cancer

On 10 July 2025, IARC, in collaboration with UC San Diego and the Sanger Institute, published results about cancer in youth. Colorectal tumors in adults under 40 had over three times more mutations than those in people over 70. These mutations correlated with specific gut bacteria, suggesting microbiome‑driven carcinogenesis. The study of more than 1,000 tumor samples points toward new microbial biomarkers. It supports the development of microbiome‑based early screening and prevention strategies.

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