New combo aims to shrink colon tumors before surgery

NCT ID NCT06890624

First seen May 30, 2026 · Last updated May 30, 2026

Summary

This study tests whether a stronger chemotherapy combination (Chinese modified FOLFOXIRI) plus an immunotherapy drug (PD-1 inhibitor) works better than standard chemotherapy (mFOLFOX6) before surgery for people with locally advanced colon cancer (stage II high-risk or stage III). About 138 adults will be randomly assigned to one of the two treatments. The main goal is to see if the stronger combo leads to more complete tumor disappearance by the time of surgery.

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