As shown in Table 2, the reported T2D risk alleles of rs243021 near BCL11A, rs10830963 in MTNR1B, and rs2237895 in KCNQ1 were associated with a lower risk for abdominal obesity in T2D patients (rs243021: 0.92 (0.84, 1.00), P = 4.42 × 10−2; rs10830963: 0.92 (0.85, 1.00), P = 4.07 × 10−2; rs2237895: 0.89 (0.82, 0.98), P = 1.29 × 10−2). The gene discussed is MTNR1B; the disease is type 2 diabetes mellitus.