Is watching small kidney tumors safe? new study aims to find out
NCT ID NCT02346435
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is for people with small kidney tumors (4 cm or less). It compares two approaches: active surveillance (regular monitoring) and immediate treatment (surgery or other procedures). The goal is to see if watching the tumor is as safe and effective as treating it right away. About 600 participants will be followed for 5 years to track survival and quality of life.
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 600 people
The number the study aims to enrol. It can still change while the study runs.
- Start date
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Jan 2009
- Expected to finish
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Jan 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
All adult patients (18-100) presenting with a clinically localized, solid renal mass (cT1a, \<=4cm).
- Ages
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18 to 100 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: * Must have a solid, enhancing renal mass ≤4cm at its greatest dimension found on incidental scanning in the last 6 months. * Age ≥ 18 and able to read, understand and sign informed consent. * Must be willing to adhere to the treatment algorithm and time constraints therein. Exclusion Criteria: * Cannot have suspicion of metastases to the kidney if any other malignancy diagnosed within two years of study entry.
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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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Johns Hopkins Hospital
RECRUITINGBaltimore, Maryland, 21287, United States
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Other studies related to the condition(s) this trial covers.
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