NFKB1 and Infertility: According to the results of another genetic association study of 438 cases (172 infertile patients with endometriosis, 77 cases of idiopathic infertility, and 189 healthy women), the 94 insertion/deletion ATTG polymorphism in the NFKB1 gene was positively correlated with endometriosis and idiopathic infertility 90.