Serum creatinine > . x OR creatinine clearance of at least Patient may not have severe renal disease (creatinine greater than times normal for age OR creatinine clearance < ml/m^/. m^) Serum creatinine clearance or radioisotope GFR ? milliliters/minute/. m^, based on a or hours (h) urine creatinine collection. Creatinine clearance above limits set in the protocol for each cohort Creatinine clearance of >= The patient must have a corrected creatinine clearance >= % of normal Patients must have a creatinine and AST =< grade Creatinine =< grade Creatinine < . and creatinine clearance > Creatinine clearance < Serum creatinine =< . x ULN or creatinine clearance (CrCl) of >= Creatinine clearance of or greater Patients with a creatinine clearance of less than are ineligible Creatinine clearance > Kidney disease with a calculated creatinine clearance <% normal value. Individuals if creatinine clearance is < Patients with a creatinine clearance less than