Age

18–any

Sex

ALL

Healthy volunteers

Not accepted

≥18 years of age at consent
Adenocarcinoma of the colon (rectosigmoid considered non-rectal); pMMR/MSS status
Any T3 or T4, N any, M0; disease amenable to surgical resection
ECOG Performance Status 0-1
Adequate tumor tissue sample with associated pathology report
Adequate hematologic, hepatic, and renal function
Reproductive status/contraception requirements per protocol

Investigational agent within 3 weeks of first dose
Imminent or urgent need for surgery
Prior treatment with ICIs targeting CTLA-4, PD-1, or PD-L1
Systemic corticosteroid/immunosuppressive therapy within 1 week of first dose (exceptions apply)
History of severe hypersensitivity to a fully human mAb; interstitial lung disease; pneumonitis requiring corticosteroids
Active or history of autoimmune disease requiring systemic treatment within 2 years
Major surgery within 4 weeks of first dose; active infection requiring treatment

Neoadjuvant Pembrolizumab and Porustobart in Resectable pMMR/MSS Colon Cancer