DDR2 and endometriosis: The AUCs (95%CI) of AQP1, BGN, DDR2, and ELMO1 were 0.96 (1.00–0.89), 0.98 (1.00–0.95), 1.00 (1.00–0.99), and 0.99 (1.00–0.98), respectively, demonstrating that each characteristic gene enabled to diagnose endometriosis accurately and sensitively (Figures 4D–G).