RORC and type 2 diabetes mellitus: We previously tested whether genes coregulated by the “Th17 core” (RORC, STAT3, BATF, IRF4, and MAF) were enriched for gene sets from GWAS of nine autoimmune diseases and three “negative controls” (Alzheimer's, schizophrenia, and type 2 diabetes) (Ciofani et al. 2012).