Significantly increased frequencies of the A allele as well as AA genotype of rs1800450 in MBL2 (Pc = 2.50 × 10<sup>-6</sup>, OR = 1.494; Pc = 2.24 × 10<sup>-6</sup>,OR = 2.899; respectively) and TT genotype of rs2617170 in KLRC4 (Pc = 2.53 × 10<sup>-6</sup>, OR = 1.695) and decreased frequencies of GG genotype of rs1800450 (Pc = 1.56 × 10-3, OR = 0.689) and C allele as well as CC genotype of rs2617170 (Pc = 2.05 × 10-9,OR = 0.664; Pc = 1.20 × 10-5, OR = 0.585; respectively) were observed in BD.