Triple therapy aims to boost Cancer-Free survival after surgery for HER2-Positive stomach cancer

NCT ID NCT05504720

First seen Jul 02, 2026 · Last updated Jul 02, 2026

Summary

This phase II trial tests whether adding pembrolizumab (Keytruda) and trastuzumab (Ontruzant) to standard FLOT chemotherapy, given before and after surgery, can improve outcomes for people with HER2-positive esophagogastric adenocarcinoma. Participants receive the drug combination for up to one year, followed by surgery. The study measures how many patients are cancer-free two years after starting treatment and how many have no tumor left at the time of surgery.

What this could mean

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

Active substance

pembrolizumab, trastuzumab, and FLOT chemotherapy (docetaxel, oxaliplatin, folinic acid, fluorouracil)

What this could lead to

If successful, this combination could improve the chance of being cancer-free two years after surgery for people with HER2-positive esophagogastric cancer.

What could go wrong

This is a small, early-phase trial with no comparison group, so results may not apply broadly. The combination of drugs can cause significant side effects, and the treatment may not work for everyone.

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.

gastroesophageal junction adenocarcinoma

As listed by the trial registrant

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

More trials for these conditions

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

Contacts and locations

Locations

  • Charité - Universitätsmedizin Berlin / Campus Virchow Klinikum (CVK)

    Berlin, 13353, Germany

  • Hämatologisch-Onkologische Praxis Eppendorf

    Hamburg, 20249, Germany

  • Institut für Klinisch-Onkologische Forschung am Krankenhaus Nordwest

    Frankfurt am Main, 60488, Germany

  • KEM | Klinik für Internistische Onkologie gGmbH

    Essen, 45136, Germany

  • Klinikum Nürnberg

    Nuremberg, 90419, Germany

  • Klinikum Wolfsburg

    Wolfsburg, 38440, Germany

  • Klinikum rechts der Isar der TU München

    München, 81675, Germany

  • Krankenhaus Barmherzige Brüder

    Regensburg, 93049, Germany

  • MVZ Onkologischer Schwerpunkt

    Berlin, 14195, Germany

  • Nationales Centrum für Tumorerkrankungen

    Heidelberg, 69120, Germany

  • St. Anna Hospital Herne

    Herne, 44649, Germany

  • Tagestherapiezentrum (TTZ) am Interdisziplinären Tumorzentrum (ITM)

    Mannheim, 68167, Germany

  • Universitätsklinikum Ulm

    Ulm, 89070, Germany