Abstract
Knowledge of population carrier frequency for DNA mismatch repair (MMR) gene mutations would contribute to understanding the burden of cancer due to genetic susceptibility, but robust prevalence estimates are lacking. To estimate carrier frequency, we genotyped a cohort of relatives of mutation carriers and determined their colorectal cancer prevalence. Systematic Finnish and US data were combined with Scottish genotype and cancer prevalence data in a Bayesian calculation. The estimated carrier prevalence in the population aged 15–74 years is 1:3139 (95% Cl = 1:1247–1:7626) and these carriers are at high risk of colorectal and other cancers. © 2000 Cancer Research Campaign http://www.bjcancer.com
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