In the codominant genotypic test model, the CC, CG and GG genotype frequencies of TXNRD1 (rs1128446) were 89 (98.9%), 1 (1.1%) and 0 in endometriosis cases, and 125 (96.2%), 5 (3.8%), 0 (2.6%) in the control group, respectively, but did not reach a significant statistical difference (p = 0.221). Here, TXNRD1 is linked to endometriosis.