ARAP1 and type 2 diabetes mellitus: We determined the degree of enrichment for each enhancer and promoter annotation with respect to T2D association data across all 39 T2D loci for which high-density genotype data were available on Metabochip (see Material and Methods) and used these enrichment estimates as a prior on the causal evidence for each variant at the ARAP1/STARD10 locus specifically.