I'm aware AMBOSS says "Individuals with Lynch syndrome have a 70–80% lifetime risk of developing CRC". Their source (https://qxmd.com/r/8550246) is published in 1995 and likely out of date. More recent research (published 2020) demonstrates significantly lower CRC lifetime penetrance (by age 70). To quote the meta-analysis: "At age 70 years, for male and female carriers, respectively, risks for MLH1 were 43.9% (95% confidence interval [CI] = 39.6% to 46.6%) and 37.3% (95% CI = 32.2% to 40.2%), for MSH2 were 53.9% (95% CI = 49.0% to 56.3%) and 38.6% (95% CI = 34.1% to 42.0%), and for MSH6 were 12.0% (95% CI = 2.4% to 24.6%) and 12.3% (95% CI = 3.5% to 23.2%)."
Source: AMBOSS - https://pmc.ncbi.nlm.nih.gov/articles/PMC7476651/






Review Lynch Syndrome








