METIMMOX: Colorectal Cancer METastasis - Shaping Anti-tumor IMMunity by OXaliplatin

Patients with MSS/pMMR-mCRC harbor tumor that can be transformed into an immunogenic disease by short-course oxaliplatin-based therapy, and may thereby benefit from the addition of immune-modulating therapy to improve outcome of the current oxaliplatin-based standard-of-care.

Primary objective: To determine progression-free survival (PFS), in terms of failure of treatment strategy, of sequential treatment with the Nordic FLOX (5-Fluorouracil, oxaliplatin and leucovorin) regimen and nivolumab compared with the standard-of-care Nordic FLOX regimen in previously untreated MSS/pMMR-mCRC. Secondary objectives: To determine safety and tolerability of sequential treatment with the Nordic FLOX regimen and nivolumab compared with the standard-of-care Nordic FLOX regimen.