Gastroenterology March 2026 Mutational Landscape of Colorectal Tumors From Individuals With Unexplained Adenomatous or Serrated Colorectal Polyposis

This research investigates the genetic origins of colorectal polyps in patients who lack a known hereditary diagnosis for their condition. By analyzing the somatic mutations and molecular signatures of nearly 300 tumors, the study highlights how specific genetic drivers like APC and BRAF distinguish different types of growths. A key discovery is that serrated polyps appear molecularly closer to healthy colon tissue than other tumor types, suggesting a distinct developmental pathway. Ultimately, this work seeks to clarify the early stages of tumor formation to better understand the underlying disease causes in patients with unexplained polyposis.