ATM and type 2 diabetes mellitus: The minor allele C of the noncoding single nucleotide polymorphism (SNP) rs11212617, which is located near the ataxia telangiectasia mutated (ATM) gene, was found to be associated with the metabolic response to the biguanide metformin in the first genome-wide association study (GWAS) carried out in 3,912 Europeans with type 2 diabetes (T2D) (1).