Cancer-Killing virus tested in humans for first time

NCT ID NCT05839600

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

Summary

This early-phase trial tested a new immunotherapy called BI 1821736 in 10 adults with advanced solid tumors that had not responded to standard treatments. BI 1821736 is a specially designed virus meant to kill cancer cells and help the immune system fight the cancer. Participants received the drug every 3 weeks for up to 3 months, and doctors monitored safety and tumor response. The study was terminated early, so only limited safety and dosing information is available.

What this could mean

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

Active substance
BI 1821736 (a virus that kills cancer cells and boosts the immune system)
What this could lead to
If it works, this could point toward a new treatment option for advanced solid tumors that have not responded to other therapies.
What could go wrong
This was a very early, small trial (10 people) that was terminated, so results are limited. The virus may cause side effects or 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.

Contacts and locations

Locations

  • Hospital Clínic de Barcelona

    Barcelona, 08036, Spain

  • Hospital Quiron. I.C.U.

    Barcelona, 08023, Spain

  • Hospital Universitario 12 de Octubre

    Madrid, 28041, Spain

  • Instituto Valenciano de Oncología

    Valencia, 46009, Spain

  • Karolinska Universitetssjukhuset Stockholm

    Stockholm, 17177, Sweden

  • NEXT Oncology-San Antonio-65273

    San Antonio, Texas, 78229, United States

  • Princess Margaret Cancer Centre

    Toronto, Ontario, M5G 2M9, Canada

  • Yale Cancer Center

    New Haven, Connecticut, 06511, United States

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