TCF7L2 and type 2 diabetes mellitus: When stratified by sex, the minor allele of the TCF7L2 SNP was associated with a large increased risk for T2D in women (p = 0.039, OR = 1.63, 95% CI 1.02–2.59) whereas no effect was seen in men (p = 0.53, OR = 1.14, 95% CI 0.76–1.72).