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Study identifier: NCT05855200 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Study of Perioperative Dostarlimab in Participants With Untreated T4N0 or Stage III dMMR/MSI-H Resectable Colon Cancer

Condition: Colonic Neoplasms · Neoplasms, Colon  ·  Sponsor: GlaxoSmithKline

PhasePhase 3
Planned participants892
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The primary purpose of this study is to evaluate the efficacy of perioperative dostarlimab compared with standard of care (SOC) in participants with untreated T4N0 or Stage III (resectable), defective mismatch repair/ microsatellite instability high (dMMR/MSI-H) colon cancer.

This description comes directly from the study's public registry record.

Talk to the study team

US GSK Clinical Trials Call Center  ·  877-379-3718  ·  GSKClinicalSupportHD@gsk.com

EU GSK Clinical Trials Call Center  ·  +44 (0) 20 89904466  ·  GSKClinicalSupportHD@gsk.com

Always discuss trial participation with your own doctor first.

Locations (266)

GSK Investigational SiteTucson, Arizona, United StatesRecruiting
GSK Investigational SiteLos Angeles, California, United StatesRecruiting
GSK Investigational SiteNew Haven, Connecticut, United StatesRecruiting
GSK Investigational SiteWashington D.C., District of Columbia, United StatesWithdrawn
GSK Investigational SiteDeerfield Beach, Florida, United StatesWithdrawn
GSK Investigational SiteFort Lauderdale, Florida, United StatesWithdrawn
GSK Investigational SiteMarietta, Georgia, United StatesWithdrawn
GSK Investigational SiteChicago, Illinois, United StatesRecruiting
GSK Investigational SiteChicago, Illinois, United StatesRecruiting
GSK Investigational SiteChicago, Illinois, United StatesWithdrawn
GSK Investigational SiteNaperville, Illinois, United StatesRecruiting
GSK Investigational SiteNaperville, Illinois, United StatesRecruiting

+ 254 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT05855200