FcγRIIA gene polymorphism was significantly associated with GBS risk in Caucasians under allelic model (OR = 1.553, 95% CI = 1.018-2.368, P = 0.041) and dominant model (OR = 1.320, 95% CI = 1.027-1.697, P = 0.030).
Results FcγRIIA H131 allele (p = < 0.0001; odds ratio [OR] = 4.78; 95% confidence interval [CI], 2.62-8.70) and FcγRIIA H/H131 genotype (p = < 0.0001 ; OR = 10.56; 95% CI, 3.59-31.06) were significantly increased in GBS patients while FcγRIIIA and FcγRIIIB allelic distributions were similar among patients and controls.