DRB1*07:01∼DQA1*02:01∼DQB1*02:02 conferred some protection against T1D in Europeans (Erlich et al., 2008), while DRB1*07:01∼DQA1*03:01∼DQB1*02:02 was susceptible for T1D in Africans (Noble et al., 2013). Here, HLA-DRB1 is linked to type 1 diabetes mellitus.