Experimental T-Cell therapy takes on deadly brain virus

NCT ID NCT06990087

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

Summary

This study tests a new treatment for progressive multifocal leukoencephalopathy (PML), a rare brain infection with no approved therapy. Researchers will give 23 patients donor immune cells that target the virus causing PML. The goal is to see if the treatment is safe, improves neurological function, and helps patients live longer.

What this could mean

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

Active substance

allogeneic HPyV-2-specific T-cells (donor immune cells targeting the virus)

What this could lead to

If successful, this could provide a new treatment option for PML, a rare and often fatal brain infection, potentially improving survival and quality of life.

What could go wrong

This is an early Phase 2 trial with only 23 participants, so results may not apply to all PML patients. There are risks of immune reactions like graft-versus-host disease or allergic responses.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

progressive multifocal leukoencephalopathy

As listed by the trial registrant

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

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Hannover Medical School

    RECRUITING

    Hanover, Lower Saxony, 30625, Germany

    Contact

  • LMU Klinikum Campus Großhadern

    NOT_YET_RECRUITING

    München, Bavaria, 81377, Germany

    Contact

  • Universitätsklinikum Düsseldorf

    NOT_YET_RECRUITING

    Düsseldorf, North Rhine-Westphalia, 40225, Germany

  • Universitätsklinikum Essen

    NOT_YET_RECRUITING

    Essen, North Rhine-Westphalia, 45147, Germany

  • Universitätsklinikum Marburg

    NOT_YET_RECRUITING

    Marburg, Hesse, Germany

  • Universitätsklinikum Schleswig-Holstein

    NOT_YET_RECRUITING

    Kiel, Schleswig-Holstein, 24105, Germany