GSTM1 and hepatitis C virus infection: The multivariate analyses evaluated 887 patients available in the effectiveness-analysis set and identified baseline characteristics that were correlated with longer OS: female sex, Child-Pugh A5, ECOG PS score of 0, tumor stage I/II/III, AST level (below median) and Hb (at or above median), hepatitis C, and history of surgical resection (Fig. 3).