New antibody drug targets Hard-to-Treat cancers

NCT ID NCT05652686

First seen Nov 01, 2025 · Last updated Jun 23, 2026 · Updated 35 times

Summary

This study tests a new drug called peluntamig (PT217) in people with certain neuroendocrine cancers, such as small cell lung cancer and neuroendocrine prostate cancer. The drug works by targeting two proteins (DLL3 and CD47) found on cancer cells. The trial will first find the safest dose, then test it alone or with chemotherapy or immunotherapy. About 203 participants will take part to see if the drug is safe and effective.

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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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Contacts and locations

Study contacts

  • Contact

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

Locations

  • City of Hope (City of Hope National Medical Center, City of Hope Medical Center)

    RECRUITING

    Duarte, California, 91010, United States

  • Dana-Farber Cancer Institute

    RECRUITING

    Boston, Massachusetts, 02215, United States

  • Massachusetts General Hospital

    RECRUITING

    Boston, Massachusetts, 02114, United States

  • Mays Cancer Center / University of Texas, San Antonio

    RECRUITING

    San Antonio, Texas, 78229, United States

  • NEXT Virginia

    RECRUITING

    Fairfax, Virginia, 22031, United States

  • Providence Portland Medical Center

    RECRUITING

    Portland, Oregon, 97213, United States

  • Sarah Cannon Research Institute University of Oklahoma

    RECRUITING

    Oklahoma City, Oklahoma, 73104, United States

  • Sarah Cannon Research Institute at HealthONE

    RECRUITING

    Denver, Colorado, 80218, United States

  • Sidney Kimmel Comprehensive Cancer Center at John Hopkins

    RECRUITING

    Baltimore, Maryland, 21287, United States

  • The University of Texas, MD Anderson Cancer Center

    NOT_YET_RECRUITING

    Houston, Texas, 77030, United States

  • University of North Carolina at Chapel Hill

    RECRUITING

    Chapel Hill, North Carolina, 27599, United States

  • Washington University School of Medicine (Siteman Cancer Center)

    RECRUITING

    St Louis, Missouri, 63108, United States

What this could mean

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

Active substance

Peluntamig (PT217) (a bispecific antibody targeting DLL3 and CD47)

What this could lead to

If successful, this could provide a new treatment option for several aggressive neuroendocrine cancers that currently have limited therapies.

What could go wrong

This is an early-phase trial (phase 1/2) with a small number of participants, so safety and effectiveness are not yet proven. The drug may cause side effects or fail to show benefit.

Conditions

The condition(s) this trial relates to.

lung neoplasm neuroendocrine carcinoma small cell lung carcinoma

As listed by the trial registrant

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