Clinical Trial Of Neoadjuvant Chemotherapy (NAC)In Upper Tract Urothelial Carcinoma (UTUC)

The main purpose of this study is to look at the cancer-free survival at two years of subjects with high risk upper tract urothelial cancer when treated with the combination of two chemotherapy drugs called Gemcitabine and Cisplatin followed by surgery to remove the kidney, all or part of the ureter (ureters are tubes made of smooth muscle fibers that propel urine from the kidneys to the urinary bladder), and a cuff of bladder where the ureter drains into the bladder. Other purposes of the study include looking at the safety of Gemcitabine and Cisplatin before surgery for this type of cancer, time to recurrence of cancer, and overall survival. Exploratory integrative tumor sequencing: The purpose of this part of the study is to test deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) in various types of samples (tissue and blood) to detect different types of cancer genetic changes in upper tract urothelial cancer (UTUC) to help develop future studies in UTUC. DNA and RNA contain key instructions for cell function and help determine the characteristics of each individual such as hair, eye, and skin color, height, susceptibility to diseases, and other characteristics.