18. All patients must have adequate organ function as defined below. All screening lab tests should be done within 30 days before study registration. *WBC >/= 2000/uL; * Neutrophils >/= 1500/uL; *Platelets >/= 100 x10^3/uL; *Hemoglobin > 9.0 g/dL; *Serum creatinine </= 1.5 x ULN or creatinine clearance (calculated with the Cockcroft-Gault formula below) >/= 40 mL/min: Men ([140 - age in years] x weight in kg)/ (72 x serum creatinine in mg/dL) *Women: ([140 - age in years] x weight in kg) / (72 x serum creatinine in mg/dL) x 0.85 *AST/ALT </=3 x ULN; *Total Bilirubin </= 1.5 x ULN (although patients with Gilbert syndrome can have total bilirubin <3.0 mg/dL)