FABP4 and colorectal carcinoma: ROC curves analysis showed that the ROC curves areas for FABP4, FABP6, and CEA as well CA19-9 in CRC are 0.658 (95%CI 0.598–0.714), 0.683 (95%CI 0.624–0.738), 0.689 (95%CI 0.631–0.744), and 0.592 (95%CI 0.531–0.651), respectively.