Many groups have reported that the activation of NF-κB plays, through complex mechanisms [12,13,14,15,16], a vital role in the regulation of the initiation and progression of many endometrial diseases such as endometritis [7,17,18,19], endometriosis [6,19,20], endometrosis [8,9,11], and endometrial carcinoma [16,21,22,23]. The gene discussed is NFKB1; the disease is endometriosis.