ATM and cancer: The correlation between AT genotypes and cancer risk has been established for a limited number of ATM variants, including those linked with a strong predisposition to malignancy (c.1A>G, c.7271T>G, c.8147T>C, c.8494C>T, c.6679C>T) and those associated with a relatively low risk (c.5762-1050A>G) [36,37,38,39,40].