Radioactive antibody combo aims to stop prostate cancer spread

NCT ID NCT00859781

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

Summary

This phase 2 trial tests whether a radioactive antibody called 177Lu-J591, combined with the hormone-blocking drug ketoconazole, can prevent prostate cancer from spreading in high-risk patients. The study enrolls 55 men whose PSA is rising despite hormone therapy but who have no visible metastases. The main goal is to see how many remain free of detectable spread after 18 months.

What this could mean

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

Active substance

177Lu-J591 (a radioactive antibody) and ketoconazole (a hormone-blocking drug)

What this could lead to

If this works, it could offer a new way to delay or prevent the spread of prostate cancer in high-risk patients whose PSA is rising despite hormone therapy.

What could go wrong

This is a small, early-phase trial with only 55 participants, so results may not apply to everyone. The combination therapy can cause side effects like low blood counts and fatigue.

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 prostate cancer

As listed by the trial registrant

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

Contacts and locations

Locations

  • Cedars Sinai

    Los Angeles, California, 90048, United States

  • Georgetown University Medical Center

    Washington D.C., District of Columbia, 20007, United States

  • Indiana University Melvin and Bren Simon Cancer Center

    Indianapolis, Indiana, 46202, United States

  • The University of Kansas Cancer Center

    Westwood, Kansas, 66205, United States

  • UPMC Hillman Cancer Center

    Pittsburgh, Pennsylvania, 15232, United States

  • USC/Norris Comprehensive cancer center

    Los Angeles, California, 90089, United States

  • University of Iowa Hospitals and Clinics

    Iowa City, Iowa, 52242, United States

  • University of Utah

    Salt Lake City, Utah, 84108, United States

  • Weill Cornell Medical College

    New York, New York, 10021, United States