Chronic renal failure or current evidence of moderate to severe renal impairment. Has difficulty climbing a flight of stairs or walking eight blocks due to physical impairment Subjects in whom the required program of PO and IV fluid hydration is contraindicated, e.g., due to pre-existing pulmonary, cardiac, or renal impairment Pts in whom the required program of oral and intravenous fluid hydration is contraindicated, e.g. due to pre-existing pulmonary, cardiac, or renal impairment Known clinically important respiratory impairment Severe bone marrow, renal or liver impairment. Subjects with pulmonary, cardiac, hepatic, or renal impairment that would limit their ability to receive cytoreductive therapy and compromise their survival; this includes, but is not restricted to, subjects with any of the following: Renal impairment with a creatinine > . mg/dl Clinical evidence of significant renal impairment Patients in whom IV fluid hydration is contraindicated (e.g. due to pre-existing pulmonary, cardiac, or renal impairment) will NOT be eligible for participation Any clinically significant pre-existing severe renal disease (eg, glomerulonephritis, nephritic syndrome, Fanconi Syndrome or renal tubular acidosis) or high risk of developing severe renal impairment. Bone marrow impairment, renal impairment, liver function abnormality and impaired cardiac function as defined in the protocol Patients with moderate to severe renal impairment. Pre-existing hearing impairment (patients who are willing to accept risk of further impairment will be considered after audiologic testing) Significant cardiac impairment Impairment of gastrointestinal function Impairment of gastrointestinal function Subjects in whom the required program of PO and IV fluid hydration is contraindicated, eg, due to pre-existing pulmonary, cardiac, or renal impairment Impairment of gastrointestinal function >= grade proteinuria at baseline or clinically significant impairment of renal function Patients with impairment of gastrointestinal function or disease Severe (CTCAE v . grade or higher) concurrent hepatic impairment, renal impairment, heart disease, hematological disease, respiratory disease, or metabolic disease Severe renal impairment. Known clinically important respiratory impairment Known hepatic impairment including cirrhosis, known renal impairment including renal insufficiency or glomerulonephritis and severe cerebral or peripheral vascular disease; Neuropathy Impairment Score requirement of - Patients in whom the required program of oral and IV fluid hydration is contraindicated, e.g. due to severe pre-existing pulmonary, cardiac, or renal impairment Patients in whom the required program of oral and IV fluid hydration is contraindicated, e.g. due to pre-existing pulmonary, cardiac, or renal impairment Subjects with severe renal impairment (GFR < mL/min/. m) or on dialysis. Severe renal impairment (stage B) defined as eGFR < cc/min/. m^ as measured by the CKD-EPI calculation Significant renal impairment as determined per investigator discretion Have severe hepatic impairment, severe renal impairment, or end-stage renal disease as determined by the treating physician Individuals with visual impairment or blindness will be excluded Severe visual or auditory impairment Severe renal impairment as measured eGFR less than per institutional laboratory Patients with severe renal impairment defined as creatinine clearance of - mL/min and/or diagnosed with stage chronic kidney disease Has difficulty climbing a flight of stairs due to physical impairment Visual impairment from any cause For patient aged years with known mild to moderate hepatic impairment: in the Investigator's opinion the impairment does not jeopardize patient's safety during the study. For patient aged years with known mild to moderate renal impairment: in the Investigator's opinion the impairment should not jeopardize patient's safety during the study. Renal impairment Renal impairment Known or suspected renal impairment; requirements for GFR prior to MRI as determined by local site standard practice Presence of visual impairment to an extent that the patient is unable to complete the computer testing Subjects who have cardiac or known circulatory impairment, and/or the inability to perspire (poor thermoregulatory function) Renal function impairment preventing administration of MRI contrast Renal function impairment preventing administration of MRI contrast Known hepatobiliary disease or impairment Reasonably able to read a newspaper or book (without sight impairment)