Gene therapy trial targets inherited dementia

NCT ID NCT04408625

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests a single-dose gene therapy called LY3884963 in 35 people with frontotemporal dementia caused by GRN gene mutations. The therapy aims to raise levels of a missing protein (progranulin) in the brain. Participants receive the treatment via injection into the fluid around the brain and are followed for 5 years to check safety and effects on dementia symptoms.

What this could mean

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

Active substance

LY3884963 (a gene therapy)

What this could lead to

If it works, this could slow or stop the progression of frontotemporal dementia in people with GRN mutations by restoring a missing protein.

What could go wrong

This is an early, first-in-human trial with only 35 participants, so safety and effectiveness are not yet proven. The treatment requires strong immune-suppressing drugs, which carry their own risks.

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.

frontotemporal dementia GRN-related frontotemporal lobar degeneration with Tdp43 inclusions

As listed by the trial registrant

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

Contacts and locations

Locations

  • AP-HM Hôpital de La Timone

    Saint-Pierre, Marseille, 13386, France

  • Centre Mémoire de Ressources

    Lille, 59000, France

  • Hospital Clinic de Barcelona, Villaroel 170 Servicio de Neurología

    Barcelona, 08036, Spain

  • Hospital Universitario de Donostia, Servicio De Neurologia, Consultas Externas Neurologia, San Sebastian, Guipúzcoa

    Donostia / San Sebastian, 20014, Spain

  • Hospital of the University of Pennsylvania, 3 West Gates Building, 3400 Spruce Street

    Philadelphia, Pennsylvania, 19104, United States

  • Lahey Hospital & Medical Center, 41 Burlington Mall Road

    Burlington, Massachusetts, 01805, United States

  • Le Ber, Institut du Cerveau et de la Moelle Epinière

    Paris, 75013, France

  • PPD Phase 1 Clinic, 100 West Gore Street, Suite 202

    Orlando, Florida, 32806, United States

  • Royal Prince Alfred Hospital, Brain & Mind Research Institute, 94 Mallet Street

    Camperdown, New South Wales, 2050, Australia

  • UZ Leuven, Neurologie Herestraat 49

    Leuven, 3000, Belgium

  • University College London,Queen Square, Dementia Research Building, London,

    London, WC1N 3BG, United Kingdom

  • k2 Medical Research-Maitland

    Maitland, Florida, 32751-5669, United States