Experimental drug tazemetostat offered to patients with rare, aggressive tumors

NCT ID NCT03874455

First seen Jul 02, 2026 ยท Last updated Jul 02, 2026

Summary

This expanded access program provides tazemetostat, a drug that blocks a protein called EZH2, to adults with serious or life-threatening solid tumors that have lost the INI1 or SMARCA4 protein. Eligible patients must have tried other treatments without success and cannot join a formal clinical trial. The goal is to offer a potential option when no standard therapies remain.

What this could mean

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

Active substance
tazemetostat
What this could lead to
If it works, this could provide a treatment option for people with rare, aggressive tumors who have run out of standard therapies.
What could go wrong
This is an expanded access program, not a formal trial, so results are limited and may not prove effectiveness. Tazemetostat may cause side effects and not shrink tumors.

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.

As listed by the trial registrant

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

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