Gene therapy may free GSDIa patients from constant cornstarch

NCT ID NCT05139316

First seen Nov 19, 2025 · Last updated May 15, 2026 · Updated 19 times

Summary

This phase 3 study tested a gene therapy (DTX401) in 49 people with glycogen storage disease type Ia, a rare condition that requires frequent cornstarch doses to prevent dangerously low blood sugar. The goal was to see if the treatment could reduce or eliminate the need for cornstarch while keeping blood sugar stable. Participants received either the gene therapy or a placebo, and researchers measured changes in daily cornstarch use over 48 weeks.

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Contacts and locations

Locations

  • Children's Hospital Colorado

    Aurora, Colorado, 80045, United States

  • Children's Hospital of Orange County

    Orange, California, 92868, United States

  • Children's Hospital of Philadelphia

    Philadelphia, Pennsylvania, 19104, United States

  • Cleveland Clinic

    Cleveland, Ohio, 44195, United States

  • Duke University

    Durham, North Carolina, 27710, United States

  • Fujita Health University Hospital

    Toyoake, Japan

  • Groningen University

    Groningen, 9700 RB, Netherlands

  • Hospital Clinico Universitario de Santiago

    Santiago de Compostela, A Coruna, 15706, Spain

  • Hospital de Clinicas de Porto Alegre

    Porto Alegre, Rio Grande do Sul, 90035-903, Brazil

  • Istituto Giannina Gaslini

    Genova, Linguria, 16147, Italy

  • Kumamoto University Hospital

    Kumamoto, Japan

  • McGill University

    Montreal, Quebec, H3H 1P3, Canada

  • Mount Sinai

    The Bronx, New York, 10467, United States

  • Osaka City General Hospital

    Osaka, Japan

  • Primary Children's Hospital

    Salt Lake City, Utah, 84132, United States

  • Righospitalet

    Copenhagen, Capital, 2100, Denmark

  • University Medical Center Eppendorf

    Hamburg, 20251, Germany

  • University of Connecticut Health Center

    Farmington, Connecticut, 06030, United States

  • University of Naples

    Naples, 80131, Italy

  • University of Texas

    Houston, Texas, 77030, United States

Conditions

Explore the condition pages connected to this study.