GSTO1 and cervical carcinoma: The authors found that carriers of the GSTO1*D140 variant (GSTO1*A allele; rs4925), heterozygous GSTO1*A140D (*C/*A genotype), and the combination of heterozygous GSTO1*A140D (140AD) and homozygous wild-type GSTO2*N142 (142NN) had a lower susceptibility to human papillomavirus (HPV) 6, 16, 18, and 16/18 infections and to cervical cancer.