PRRT1 and type 1 diabetes mellitus: Besides the HLA genes, we also identified the non-HLA genes AL669918.1, CLIC1, CYP21A2, HSPA1A, PRRT1, TAP1, TAP2, TNXB, TSBP1, and VWA7 to be associated with NDR-defined T1D in two of our association tests (Figure 2B) and with alternative phenotype definitions (Table 1).