The Food and Drug Administration approved nivolumab (Opdivo, Bristol Myers Squibb Company) with ipilimumab (Yervoy, Bristol Myers Squibb Company) for adult and pediatric patients 12 years of age and older with unresectable or metastatic microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) colorectal cancer (CRC).