A member of the patient's treatment team, the protocol investigator, or a member of the research team at Memorial Sloan-Kettering Cancer Center (MSKCC) will identify potential research subjects. At MSKCC the following outpatient clinics will be used to recruit UC cases: Urology and Genitourinary Oncology. Patients and families may also be directly referred to the study team by any MSKCC physician, external physician, or by the family itself.