PTPN12 and colorectal carcinoma: For CRC, TNM stage was correlated with expression of PTPN5, PTPN12, and PTPN14 (P = 0.049, 0.027, 0.002, resp.; Additional file 1: Table S4); N stage was associated with expression of PTPN5, PTPN12, and PTPN14 (P = 0.034, 0.018 and 0.004, resp.; Additional file 1: Table S4).