New drug shows promise for rare joint tumor in early trial

NCT ID NCT03069469

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

Summary

This study tests a drug called vimseltinib in people with a rare joint tumor (tenosynovial giant cell tumor, or TGCT) and advanced solid tumors. The drug blocks a protein that helps these tumors grow. The trial has two phases: first, finding the safest dose, then expanding to see how well it shrinks tumors and improves symptoms like pain and joint movement. About 120 adults are taking part.

What this could mean

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

Active substance

vimseltinib (a drug that blocks a protein called CSF1R, which helps control certain tumor growth)

What this could lead to

If successful, this could provide a new treatment option for people with tenosynovial giant cell tumor (TGCT) that cannot be removed by surgery, potentially shrinking tumors and improving joint movement.

What could go wrong

This is an early-phase trial (Phase 1/2) with a small number of participants, so the drug may not work as hoped or could cause side effects. Results may not apply to all patients.

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.

cancer Giant Cell Tumor of Tendon Sheath tenosynovial giant cell tumor tenosynovial giant cell tumor, diffuse type

As listed by the trial registrant

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

Contacts and locations

Locations

  • Centre Leon Berard

    Lyon, France

  • Dana Farber

    Boston, Massachusetts, 02215, United States

  • Fondazione IRCCS Istituto Nazionale Dei Tumori

    Milan, Italy

  • Gustave Roussy Cancer Campus Grand Paris

    Paris, France

  • Hospital Clinico San Carlos

    Madrid, Spain

  • Hospital Universitario Vall d'Hebron

    Barcelona, Spain

  • Hospital Universitario Virgen del Rocío, Sevilla

    Seville, Spain

  • IRCCS Istituto Ortopedico Rizzoli

    Bologna, Italy

  • Istituto Nazionale dei Tumori

    Milan, Italy

  • Leiden University Medical Center

    Leiden, Netherlands

  • M. Sklodowska-Curie Memorial Cancer Center

    Warsaw, Poland

  • MSKCC

    New York, New York, 10065, United States

  • Mayo Clinic

    Jacksonville, Florida, 32224, United States

  • McGill University Health Centre

    Montreal, Quebec, Canada

  • OHSU

    Portland, Oregon, 97239, United States

  • Oregon Health & Science University

    Portland, Oregon, 97239, United States

  • Peter MacCallum Cancer Centre

    Melbourne, Australia

  • Princess Margaret Cancer Center

    Toronto, Canada

  • Regina Elena National Cancer Institute

    Rome, Italy

  • Sarah Cannon Research Institute

    Nashville, Tennessee, 37203, United States

  • Stanford Cancer Institute

    Palo Alto, California, 94304, United States

  • University College Hospital

    London, United Kingdom

  • University of Colorado - Denver

    Denver, Colorado, 80204, United States

  • University of Miami

    Miami, Florida, 33136, United States