Neoadjuvant Chemotherapy Versus Surgery Alone in Patients With High-Grade UTUC

Inclusion Criteria: * Histologically confirmed high-grade upper tract transitional cell carcinoma at MSKCC or a participating site and/or radiographically visible tumor stage T2-T4a N0/X M0 disease with positive selective urinary cytology. Hydronephrosis associated with tumor on imaging or biopsy will be considered invasive by definition. * Medically appropriate candidate for radical nephroureterectomy or ureterectomy as per MSKCC or a participating site attending urologic oncologist * Karnofsky Performance Status ≥ 70% * Age ≥ 18 years of age * Required Initial Laboratory Values: Absolute neutrophil count ≥ 1500 cells/mm3 Platelets ≥ 100,000 cells/mm3 Hemoglobin ≥ 9.0g/dL Bilirubin ≤ 1.5 Aspartate transaminase (AST) and alanine transaminase (ALT) ≤ 2.5 x ULN for the institution Alkaline phosphatase ≤ 2.5 x upper limit of normal (ULN) for the institution Serum creatinine ≤ 1.5 mg/dL and calculated creatinine clearance ≥ 55 If female of childbearing potential, serum pregnancy test is negative. * Patients with reproductive potential must use an effective method to avoid pregnancy for the duration of the trial. ml/min/1.73m2 using the formula: Chronic kidney disease (CKD) epi : glomerular filtration rate (GFR) = 141 X min(Scr/κ,1)α X max(Scr/κ,1)-1.209 X 0.993 Age X 1.018 \[if female\] X 1.159 \[if black\] * Scr is serum creatinine, k is 0.7 for females and 0.9 for males, a is -0.329 for females and -0.411 for males, min indicates the minimum of Scr/k or 1, and max indicate…