Experimental drug combo for rare sarcoma shows promise, but trial halted early

NCT ID NCT05712694

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

Summary

This phase 3 trial tested whether adding ADI-PEG 20 to standard chemotherapy (gemcitabine and docetaxel) could help people with advanced leiomyosarcoma, a rare soft tissue cancer. The study planned to enroll 218 participants whose cancer had progressed after prior treatment. Unfortunately, the trial was terminated early, so it is not yet known if the combination improves outcomes. The results may still provide clues for future research.

What this could mean

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

Active substance

ADI-PEG 20 (pegargiminase) plus gemcitabine and docetaxel

What this could lead to

If successful, this combination could offer a new treatment option for people with advanced leiomyosarcoma that has stopped responding to standard therapy.

What could go wrong

The trial was terminated early, so results are limited. It is unclear if ADI-PEG 20 adds benefit over chemotherapy alone, and side effects from the drug combination may be significant.

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.

leiomyosarcoma sarcoma soft tissue sarcoma

As listed by the trial registrant

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

Contacts and locations

Locations

  • Chang Gung Medical Foundation Kaohsiung

    Kaohsiung City, Niaosong District, 83301, Taiwan

  • Duke Cancer Institute

    Durham, North Carolina, 27710, United States

  • Indiana University

    Indianapolis, Indiana, 46202, United States

  • Mass General Brigham Cancer Center

    Boston, Massachusetts, 02114, United States

  • Mayo Clinic Arizona

    Phoenix, Arizona, 85054, United States

  • Mayo Clinic Florida

    Jacksonville, Florida, 32224, United States

  • Mayo Clinic Rochester

    Rochester, Minnesota, 55905, United States

  • McGill University Health Centre (Quebec)

    Montreal, Quebec, H4A 311, Canada

  • Medical College of Wisconsin/ Froedtert Hospital

    Milwaukee, Wisconsin, 53226, United States

  • Memorial Sloan Kettering Cancer Center

    New York, New York, 10065, United States

  • Moffitt Cancer Center

    Tampa, Florida, 33612, United States

  • NYU Langone Health

    New York, New York, 10016, United States

  • National Taiwan University Hospital

    Taipei, Taipei, 10002, Taiwan

  • Northwestern

    Chicago, Illinois, 60611, United States

  • Ohio State University Wexner Medical Center/ The James Cancer Hospital and Solove Research Institute

    Columbus, Ohio, 43210, United States

  • Stanford University Medical Centre

    Palo Alto, California, 94304, United States

  • Taipei Veterans General Hospital

    Taipei, Taipei, 11217, Taiwan

  • UCLA

    Santa Monica, California, 90404, United States

  • UCSF

    San Francisco, California, 94158, United States

  • UHN - Princess Margaret Cancer Center (Ontario)

    Toronto, Ontario, M5G 2M9, Canada

  • UPMC Hillman Cancer Center

    Pittsburgh, Pennsylvania, 15232, United States

  • UPenn (Abramson Cancer Center, Pennsylvania Hospital)

    Philadelphia, Pennsylvania, 19106, United States

  • USC Norris comprehensive cancer center

    Los Angeles, California, 90033, United States

  • University Hospitals Cleveland Medical Center

    Cleveland, Ohio, 44106, United States

  • University of Colorado Cancer Center/ CU Anschutz Medical Campus

    Aurora, Colorado, 80045, United States

  • University of Iowa

    Iowa City, Iowa, 52242, United States

  • University of Miami/ Sylvester Comprehensive Cancer Center

    Miami, Florida, 33136, United States

  • University of Michigan

    Ann Arbor, Michigan, 48109, United States

  • University of Texas MD Anderson Cancer Center

    Houston, Texas, 77030, United States

  • Washington University School of Medicine - Siteman Cancer Center

    St Louis, Missouri, 63110, United States