New pill could help control PKU – phase 3 trial now recruiting

NCT ID NCT06971731

First seen Jun 27, 2026 · Last updated Jul 09, 2026 · Updated 2 times

Summary

This study tests an experimental oral drug, JNT-517, for adults with phenylketonuria (PKU), a genetic condition that causes harmful buildup of phenylalanine (Phe). About 120 adults will receive either JNT-517 or a placebo for 6 weeks, then all will receive JNT-517 for nearly a year. The goal is to see if the drug safely lowers blood Phe levels and helps manage the disease.

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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

  • Ann & Robert H. Lurie Children's Hospital of Chicago

    RECRUITING

    Chicago, Illinois, 60611, United States

  • Beatrix Children's Hospital

    RECRUITING

    Groningen, Netherlands

  • Centre Hospitalier Régional Universitaire (CHRU) de Tours - Hôpital Bretonneau

    RECRUITING

    Tours, France

  • Fakultní nemocnice Královské Vinohrady

    RECRUITING

    Prague, Czechia

  • Fujita Health University

    RECRUITING

    Kutsukake-cho, Japan

  • Hospital Clinico Universitario de Santiago de Compostela

    RECRUITING

    Santiago de Compostela, Spain

  • Hospital Universitario Ramón y Cajal

    RECRUITING

    Madrid, Spain

  • M.A.G.I.C Clinic

    RECRUITING

    Calgary, Alberta, T2E 7H7, Canada

  • Mater Health - Mater Hospital Brisbane

    RECRUITING

    South Brisbane, 4104, Australia

  • Nihon University Hospital

    RECRUITING

    Chiyoda-ku, Japan

  • Oregon Health and Science University

    RECRUITING

    Portland, Oregon, 97239, United States

  • Osaka Metropolitan University Hospital

    RECRUITING

    Osaka, Japan

  • Pomorski Uniwersytet Medyczny w Szczecinie

    RECRUITING

    Szczecin, Poland

  • Royal Adelaide Hospital

    RECRUITING

    Adelaide, 5000, Australia

  • Royal Melbourne Hospital

    RECRUITING

    Parkville, Australia

  • Universitaetsmedizin der Johannes Gutenberg-Universitaet Mainz

    RECRUITING

    Mainz, Germany

  • Universitair Medisch Centra (AMC)- Amsterdam

    RECRUITING

    Amsterdam, Netherlands

  • University of California Los Angeles (UCLA) School of Medicine

    RECRUITING

    Los Angeles, California, 90024, United States

  • University of Florida (UF) Health Shands Hospital

    RECRUITING

    Gainesville, Florida, 32608, United States

  • University of Pittsburgh Medical Center (UPMC) - Children's Hospital of Pittsburgh

    RECRUITING

    Pittsburgh, Pennsylvania, 15201, United States

  • University of South Florida

    RECRUITING

    Tampa, Florida, 33606, United States

  • University of Texas Health (UTHealth) Science Center at Houston

    RECRUITING

    Houston, Texas, 77030-1501, United States

  • University of Texas Southwestern

    RECRUITING

    Dallas, Texas, 75390, United States

  • Universitätsklinikum Münster

    RECRUITING

    Münster, Germany

  • Utah Health - The University of Utah Hospital

    RECRUITING

    Salt Lake City, Utah, 84112, United States

  • Vanderbilt University Medical Center

    RECRUITING

    Nashville, Tennessee, 37232, United States

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