Can a DNA test predict who will respond to cancer immunotherapy?

NCT ID NCT05515796

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

Summary

This completed Phase 2 trial tested whether a special DNA-based test could predict how well patients with stomach or rectal cancer respond to immunotherapy (tislelizumab) combined with chemotherapy and/or radiation. 189 adults with advanced cancer participated. The goal was to see if the test could identify who would have a complete response, meaning no cancer remains after treatment.

What this could mean

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

Active substance

Tislelizumab (immunotherapy drug) combined with chemotherapy (CapeOx) and/or trastuzumab and radiotherapy

What this could lead to

If successful, this could lead to a way to predict which patients will benefit from immunotherapy before treatment, improving outcomes for gastrointestinal cancers.

What could go wrong

This is a Phase 2 trial with 189 participants, so results are still early. The prediction model may not prove accurate enough for widespread use, and immunotherapy can cause serious immune-related side effects.

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.

chemotherapy-induced toxicity gastric adenocarcinoma gastric cancer gastric neoplasm gastroesophageal junction adenocarcinoma 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

Locations

  • Army Medical Center

    Chongqing, Other (Non U.s.), 400000, China