• INCLUSION CRITERIA:
• Participants must have histologically or cytologically confirmed urothelial or rare genitourinary cancer including but not limited to the following: small cell carcinoma of the bladder; adenocarcinoma of the bladder; squamous cell carcinoma of the bladder; plasmacytoid urothelial carcinoma; any penile cancer; any testicular cancer, sarcomatoid renal cell carcinoma; sarcomatoid urothelial carcinoma; renal medullary carcinoma or other miscellaneous histologic variants of the urothelial carcinoma, such as, but not limited to micropapillary, giant cell, lipid-rich, clear cell and nested variants, large cell neuroendocrine carcinoma, lymphoepithelioma-like carcinoma and mixed patterns will be considered, as well as small cell neuroendocrine prostate cancer, testicular Sertoli or Leydig cell tumors. Any genitourinary cancer can be included at the principal investigator's discretion.
• Age >=18 years.
• Ability of participant to understand and the willingness to sign a written informed consent document.

EXCLUSION CRITERIA:

-None