Obtained =< 21 days prior to registration: aspartate aminotransferase (AST) =< 3 x institutional upper limit of normal (ULN) Aspartate aminotransferase (AST) < 2 x institutional upper limit of normal (ULN) within 14 days of enrollment to trial Obtained =< 21 days prior to registration and confirmed prior to the first dose of study drug: Aspartate aminotransferase (AST) =< 3 x institutional upper limit of normal (ULN) Aspartate aminotransferase (AST) =< upper limit of institutional normal Aspartate aminotransferase (AST)/alanine aminotransferase (ALT) =< 2.5 X institutional upper limit of normal OR =< 5 x institutional upper limit of normal in cases of liver metastases Serum aspartate aminotransferase (AST) < 5 x institutional upper limit of normal (IULN) Aspartate aminotransferase (AST) < 5.0 x normal institutional limits within 14 days of study entry Aspartate aminotransferase (AST) =< 3 times the institutional upper limit of normal Aspartate aminotransferase (AST) < 4 times the upper limit of institutional normal Performed within 14 days prior to study: Aspartate aminotransferase (AST) < 3 times the upper limits of the institutional normal Aspartate aminotransferase (AST) =< 3 times the institutional upper limit of normal Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =< 3 x institutional upper limit of normal (=< 5 x institutional upper limit of normal if evidence of liver metastasis) Aspartate aminotransferase (AST) > 1.5 x institutional upper limit of normal Aspartate aminotransferase (AST)/alanine aminotransferase (ALT) =< 1.5 X institutional upper limit of normal; subjects with known liver involvement by lymphoma: AST/ALT =< 2 X institutional upper limit of normal Aspartate aminotransferase (AST) =< 2.5 x institutional upper limit of normal Obtained =< 21 days prior to registration: Aspartate aminotransferase (AST) =< 3 x institutional upper limit of normal (ULN) Aspartate aminotransferase (AST) =< 5 x institutional upper limits of normal (ULN) Aspartate aminotransferase (AST) < 2.5 X institutional upper limit of normal Aspartate aminotransferase (AST) =< 3 x upper limit of institutional normal Aspartate aminotransferase (AST) < 2.5 X institutional upper limit of normal AST < 2.5 X institutional upper limit of normal Aspartate aminotransferase (AST) 5 x upper limit of normal (based on institutional standards) Aspartate aminotransferase (AST) =< 1.5 x upper limit of institutional normal Aspartate aminotransferase (AST) =< upper limit of institutional normal