6. Laboratory values: Screening serum creatinine > upper limit of normal (ULN); total bilirubin > (ULN); alanine aminotransferase (ALT) and AST ≥ 2.5 ULN or ≥ 5.0×ULN if liver metastases are present; absolute neutrophil count <1,500/mm3, platelet concentration <100,000/mm3, hematocrit level <27% for females or <30% for males, or coagulation tests (prothrombin time [PT], partial thromboplastin time [PTT], International Normalized Ratio [INR]) >1.5×ULN unless on therapeutic doses of warfarin.