Experimental drug GLM101 targets rare PMM2-CDG in pivotal trial

NCT ID NCT06892288

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests a drug called GLM101 for people with PMM2-CDG, a rare inherited disease that affects movement and coordination. About 50 children and adults will receive weekly infusions of either GLM101 or a placebo for 24 weeks, followed by an open-label phase where everyone gets the drug. The main goal is to see if GLM101 improves ataxia (loss of muscle control) and other motor functions.

What this could mean

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

Active substance

GLM101 (a drug given as a weekly intravenous infusion)

What this could lead to

If it works, this could point toward a treatment that improves coordination and movement in people with PMM2-CDG, a rare and serious genetic disease.

What could go wrong

This is a mid-stage trial with only 50 participants, so results may not apply to everyone. The drug is still experimental, and its long-term safety and effectiveness are not yet proven.

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.

Ataxia PMM2-congenital disorder of glycosylation

As listed by the trial registrant

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

Contacts and locations

Locations

  • AP-HP Hopital Necker-Enfants Malades

    Paris, 75015, France

  • Azienda Ospedaliero Universitaria Pisana

    Pisa, 56126, Italy

  • Azienda Ospedaliero Universitaria Policlinico G. Rodolico-San Marco

    Catania, 95124, Italy

  • Birmingham Women's and Children's NHS Foundation Trust

    Birmingham, B4 6NH, United Kingdom

  • Hospital Sant Joan de Déu

    Esplugues de Llobregat, 08950, Spain

  • Hospital Universitario 12 de Octubre

    Madrid, 28041, Spain

  • Icahn School of Medicine at Mount Sinai

    New York, New York, 10029, United States

  • Instytut Matki i Dziecka

    Warsaw, 01-211, Poland

  • Seattle Children's Hospital

    Seattle, Washington, 98105, United States

  • The Children's Hospital of Philadelphia

    Philadelphia, Pennsylvania, 19104, United States

  • UZ Leuven, Campus Gasthuisberg

    Leuven, 3000, Belgium

  • Unidade Local de Saúde de Santo António

    Porto, 4099-001, Portugal

  • Universitaetsklinikum Muenster

    Münster, 48149, Germany

  • University of Minnesota

    Minneapolis, Minnesota, 55455, United States

  • Vseobecna fakultni nemocnice v Praze

    Prague, 2, 128 0, Czechia

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