RecruitingPhase 2Drug trialNivolumab and Ipilimumab in Anti-PD1-Resistant dMMR/MSI mCRCNIPIRESCUE evaluates nivolumab and ipilimumab in patients with MSI/dMMR mCRC resistant to anti-PD1 monotherapy and previously treated with fluoropyrimidine, oxaliplatine, irinotecan, and anti- vascular endothelial growth factor (VEGF) or anti- epidermal growth factor receptor (EGFR) therapy.