New cocktail of drugs and viruses aims to shrink rectal tumors without surgery

NCT ID NCT07543848

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

Summary

This phase 2 trial tests a mix of immunotherapy, a cancer-killing virus, short-course radiation, and chemotherapy in 20 people with locally advanced low rectal cancer. The goal is to see if this combination can make the tumor disappear completely for at least a year, potentially allowing patients to avoid major surgery. The study will closely monitor tumor response and side effects.

What this could mean

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

Active substance
serplulimab (PD-1 inhibitor), oncolytic virus H101, short-course radiotherapy, and XELOX chemotherapy
What this could lead to
If successful, this combination could increase the chance of a complete response and allow more patients to avoid surgery, preserving the rectum.
What could go wrong
This is a small, early-phase trial with only 20 participants, so results may not apply widely. The combination of multiple treatments also raises the risk of serious side effects.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • Chongqing University Cancer Hospital

    Chongqing, Chongqing Municipality, 400030, China

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Other studies related to the condition(s) this trial covers.