New drug cocktail aims to tackle Hard-to-Treat stomach and esophageal cancers

NCT ID NCT05187182

First seen Jun 24, 2026 · Last updated Jun 24, 2026

Summary

This early-phase trial is testing a new targeted drug called CA-4948 combined with standard chemotherapy and immunotherapy for people with advanced stomach, esophageal, or gastroesophageal junction cancer that cannot be removed by surgery. The study will enroll 42 participants and will first find the safest dose of CA-4948, then test it in two groups: one with HER2-negative cancer and one with HER2-positive cancer (adding trastuzumab). The main goals are to check safety and find the right dose.

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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

  • Washington University School of Medicine

    RECRUITING

    St Louis, Missouri, 63110, United States

    Contact

    Contact

    Contact

    Contact

    Contact

    Contact

    Contact

    Contact

    Contact

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

    Contact

    Contact

What this could mean

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

Active substance

CA-4948 (a targeted drug) combined with chemotherapy (FOLFOX), immunotherapy (nivolumab or pembrolizumab), and possibly trastuzumab

What this could lead to

If successful, this could point toward a new combination treatment for advanced stomach and esophageal cancers that are hard to treat.

What could go wrong

This is an early Phase I trial with only 42 people, so safety and dosing are still being figured out. The combination may cause significant side effects or not work better than existing treatments.

Conditions

The condition(s) this trial relates to.

esophageal cancer Esophageal Neoplasms gastric cancer gastric neoplasm gastroesophageal cancer gastroesophageal junction adenocarcinoma

As listed by the trial registrant

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