In the codominant model, the GG, GT and TT genotype frequencies of TXN2 (rs4821494) were 54 (60%), 33 (36.7%) and 3 (3.3%) in endometriosis group and 60 (46.2%), 60 (42.2%) and 10 (7.7%) in the control group. The gene discussed is TXN2; the disease is endometriosis.