Scientists launch Largest-Ever study of rare bladder and genital cancers
NCT ID NCT04923178
First seen Jun 26, 2026 · Last updated Aug 11, 2026 · Updated 7 times
Summary
This study follows 1,100 adults with rare urinary tract cancers, such as unusual bladder, kidney, testicular, or penile cancers. Researchers will collect medical records, blood and tumor samples, and imaging over many years to understand how these cancers grow and respond to treatment. The goal is to fill knowledge gaps and improve care for these often-overlooked cancers.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could provide crucial insights into how rare urinary tract cancers behave, helping doctors develop better treatment guidelines.
- What could go wrong
- This is an observational study, not a treatment trial. It will not directly test any new therapy, and results may take years to influence patient care.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 1,100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2022
- Expected to finish
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Dec 2042
An estimate. End dates often move.
- Lead sponsor
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A government research agency
The lead sponsor is the US National Institutes of Health.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
primary clinical
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
* 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
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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National Institutes of Health Clinical Center
RECRUITINGBethesda, Maryland, 20892, United States
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