We reported that PSMD9 rarely causes T2D by unique mutations [5] and that the PSMD9 IVS3 + nt460 A > G, IVS3 + nt437 C > T and E197G A > G single nucleotide polymorphisms (SNPs) are linked to late-onset T2D via the recessive model [6] and to MODY3 [7] via the additive model. The gene discussed is PSMD9; the disease is type 2 diabetes mellitus.