GSTM1 and cholangitis: There was no difference in median OS according to age (<60 vs. >60 years, p=0.625), Hb values (<11 vs. >11, p=0.938), leukocytes (>8,000 vs. >8,000, p=0.410), cholangitis (yes vs. no, p=0.541), creatinine (<1.0 vs. >1.0, p=0.470), sGOT (<150 vs. >150, p=0.856), sGTP (<150 vs. >150, p=0.434), PA (<70 vs. >70%, p=0.931), albumin (<3.5 vs.>3.5, p=0.238) and comorbidities (yes vs. no, p=0.177).