Recently, it has been suggested that CYP17, VDR, MUC17, COX-2, WNT4, E-cadherin, CYP19, CYP17, TYK2, NFKB1, and MUC2 gene variants also contributed to endometriosis-related infertility [17, 47–55]. This evidence concerns the gene WNT4 and endometriosis.