NOTCH1 and hepatocellular carcinoma: Compared with pericarcinomatous tissue, Notch 1 was associated with over expression in HCC tissues (OR = 1.84, 95%CI: 0.20 to 17.33; P = 0.000, I2 = 95.5%), while similar trends were found in comparison with the normal control (OR = 1.40, 95%CI: 0.13 to 15.40; P = 0.000, I2 = 92.4%).