Double-Drug attack on Hard-to-Treat prostate cancer begins human testing

NCT ID NCT07082920

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This early-phase trial is testing a combination of two experimental drugs—Pasritamig and ARX517—in 140 men with metastatic castration-resistant prostate cancer, a form that has spread and no longer responds to hormone therapy. The goal is to find a safe dose and see if the combination can shrink tumors. The study is currently recruiting.

What this could mean

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

Active substance

Pasritamig (JNJ-78278343) and ARX517 (JNJ-95298177)

What this could lead to

If successful, this could lead to a new combination treatment option for advanced prostate cancer that has stopped responding to hormone therapy.

What could go wrong

This is an early phase 1 trial, so safety and dosing are still being figured out. The drugs may cause serious side effects like cytokine release syndrome, and there is no guarantee they will shrink tumors or extend life.

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.

castration-resistant prostate carcinoma metastatic prostate carcinoma prostate cancer prostate neoplasm

As listed by the trial registrant

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

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Columbia University Medical Center

    RECRUITING

    New York, New York, 10032, United States

  • Florida Cancer Specialists

    RECRUITING

    Sarasota, Florida, 34232, United States

  • Fred Hutchinson Cancer Center

    RECRUITING

    Seattle, Washington, 98109, United States

  • Royal Marsden Hospital (Sutton)

    RECRUITING

    Sutton, SM2 5PT, United Kingdom

  • The Christie Nhs Foundation Trust

    RECRUITING

    Manchester, M20 4BX, United Kingdom

  • University Hospitals Cleveland Medical Center

    RECRUITING

    Cleveland, Ohio, 44106, United States