Radiation's immune secrets: new trial probes rectal cancer response

NCT ID NCT05943210

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study is looking at how short-course radiation therapy (5 days of treatment) affects the immune system in people with rectal cancer. Researchers will collect blood, stool, and tumor tissue samples before, during, and after radiation to study these changes. The goal is to better understand the body's response to radiation, which could help improve future treatments. About 25 adults with localized rectal cancer will take part across seven international centers.

What this could mean

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

Active substance

Short course radiation therapy

What this could lead to

If successful, this study could reveal how radiation changes the immune environment in rectal cancer, potentially leading to better combination therapies.

What could go wrong

This is a small, early-stage observational trial (25 participants) focused on collecting data, not testing a new treatment. It may not directly improve patient outcomes.

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.

rectal cancer rectal neoplasm rectum adenocarcinoma

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

  • New York Presbyterian Brooklyn Methodist Hospital

    RECRUITING

    Brooklyn, New York, 10065, United States

    Contact

    Contact Email: •••••@•••••

    Contact Email: •••••@•••••

  • New York Presbyterian Hospital - Queens

    NOT_YET_RECRUITING

    New York, New York, 11355, United States

    Contact

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

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

  • Rutgers Cancer Institute of New Jersey

    RECRUITING

    New Brunswick, New Jersey, 08901, United States

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

    Contact

  • The University of Chicago

    RECRUITING

    Chicago, Illinois, 60637, United States

    Contact Email: •••••@•••••

    Contact

  • Weill Cornell Medical College

    RECRUITING

    New York, New York, 10065, United States

    Contact

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

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