Experimental cancer combo trial halted early

NCT ID NCT05147350

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This early-stage trial tested a new drug called RP-6306 combined with standard chemotherapy (FOLFIRI) in 38 adults with advanced solid tumors that had stopped responding to other treatments. The goal was to check safety, find the best dose, and see if the combo could shrink tumors. However, the study was terminated early, so no final results are available.

What this could mean

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

Active substance

RP-6306 (a PKMYT1 inhibitor) combined with FOLFIRI chemotherapy

What this could lead to

If successful, this could point toward a new combination treatment for advanced solid tumors that have stopped responding to standard therapy.

What could go wrong

This was a very early (Phase 1) trial that was terminated, so no conclusions can be drawn. The combination may cause significant side effects, and it is unclear if it will work in larger studies.

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.

neoplasm

As listed by the trial registrant

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

Contacts and locations

Locations

  • # 2001, Princess Margaret Cancer Centre

    Toronto, Ontario, ON M5G 2M9, Canada

  • # 3003, Sarah Cannon Research Institute

    London, W1G 6AD, United Kingdom

  • # 5002, South Texas Accelerated Research Therapeutics

    Madrid, Spain

  • # 5003, Hospital Universitario HM Sanchinarro

    Madrid, Spain

  • #1001, The University of Texas M.D. Anderson Cancer Center

    Houston, Texas, 77030, United States

  • #1008, Columbia University

    New York, New York, 10032, United States

  • #1013, The University of Utah, Huntsman Cancer Center

    Salt Lake City, Utah, 84112, United States

  • #1019, UCLA, Westwood Cancer Center

    Los Angeles, California, 90095, United States

  • #1022, Moffitt Cancer Center

    Tampa, Florida, 33612, United States