8. Pre-existing hepatic impairment: The screening for total bilirubin >25.7 µmol/L (1.5 mg/dL) will be done by the oncologist to qualify for chemoradiation treatment (CXRT). The screening for 2 times the upper limit of normal Hepatotoxicity (Aspartate aminotransferase (AST), Alkaline phosphatase (ALP) and Alanine aminotransferase (ALT) will be done by the oncologist to qualify for CXRT.