New registry to see if freezing or burning kidney tumors works Long-Term

NCT ID NCT05210933

Terminated Disease control Sponsor: University of Alberta Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This registry follows 750 patients with small kidney tumors who are not good candidates for surgery. They receive either cryotherapy (freezing) or radiofrequency ablation (heating) to destroy the tumor. Researchers will track survival, kidney function, and complications over time, and collect blood and urine samples for lab studies.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: cryotherapy and radiofrequency ablation
What this could lead to: If successful, this registry could confirm that ablation is a safe and effective option for controlling small kidney tumors in patients who cannot have surgery.
What could go wrong: This is an observational registry, not a controlled trial, so it cannot prove cause and effect. The study is currently suspended, and results may take years to emerge.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

kidney cancer renal carcinoma renal cell carcinoma

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

RENAL CANCER

Contacts and locations

Locations

University of Alberta

Edmonton, Alberta, Canada
University of Calgary

Calgary, Alberta, Canada

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