Can a pill rewrite the genetic story of resistant kidney cancer?

NCT ID NCT07748988

First seen Aug 06, 2026 · Last updated Aug 07, 2026 · Updated 1 time

Summary

This pilot study tests whether the experimental drug casdatifan can alter the activity of genes controlled by HIF-2α in people with advanced clear cell kidney cancer that has stopped responding to prior treatments. Participants take casdatifan daily, and researchers analyze tumor biopsies taken before, during, and after treatment to see how gene expression shifts. The goal is to understand how the drug works and why some tumors may resist it, potentially guiding smarter use of this therapy in the future.

What this could mean

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

Active substance
casdatifan (AB521), an oral HIF-2α inhibitor
What this could lead to
If successful, this could reveal how casdatifan works in resistant kidney cancer and guide future combination therapies or patient selection.
What could go wrong
This is a very early, small pilot study focused on biological changes, not clinical outcomes. Results may not predict treatment effectiveness, and tumor biopsies carry procedural risks.

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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.

Contacts and locations

Locations

  • Vanderbilt University Medical Center

    Nashville, Tennessee, 37232, United States

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