Incidences of C1236T, G2677T/A, and C3435T genotypes in the glucocorticoid-induced avascular necrosis of the femoral head (GANFH) patients and control groups. (A) C1236T, black indicates TT genotype and gray indicates CC and CT genotypes; (B) G2677T/A, black indicates T/AT/A genotype and gray indicates GG and GT/A genotypes; (C) C3435T, black indicates TT genotype and gray indicates CC and CT genotypes; * for chi-square (χ2) tests, p=0.016, GANFH versus healthy control group; p<0.001, GANFH group versus GC-resistant group.