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

NCT ID NCT05187182

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

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.

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.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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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

  • Washington University School of Medicine

    RECRUITING

    St Louis, Missouri, 63110, United States

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