A number of cancer genes are more common in Jews than in the general population
Women carrying a BRCA 1 mutation have a 72% likelihood of developing breast cancer by age 80, which is more than five times the risk of the general population.
Women with a BRCA 2 mutation have a 69% likelihood of developing and a 44% likelihood of developing ovarian cancer, which is over thirty times the risk of the general population.
APC I1307K allele
Associated with increased risk of colorectal cancer.