An Investigational Immuno-therapy Study Of Nivolumab In Combination With Trametinib With Or Without Ipilimumab In Participants With Previously Treated Cancer of the Colon or Rectum That Has Spread

Inclusion Criteria:

1. Histologically or cytologically confirmed previously treated metastatic colorectal cancer with adenocarcinoma histology and in Stage IV per American Joint Committee on Cancer (version 4.0) at study entry
2. Microsatellite status should be performed per local standard of practice, immunohistochemistry (IHC) and/or PCR. If IHC results are equivocal, PCR is required for determining microsatellite stable (MSS) status
3. Must have measurable disease per RECIST 1.1. Participants with lesions in a previously irradiated field as the sole site of measurable disease will be permitted to enroll provided the lesion(s) have demonstrated clear progression and can be measured accurately
4. Eastern Cooperative Oncology Group (ECOG) Performance Status of 0-1 at screening and on cycle 1 day 1 (C1D1)

Exclusion Criteria:

1. BRAF V600 mutant colorectal cancer
2. Active brain metastases or leptomeningeal metastases
3. Active, known or suspected autoimmune disease
4. Participants with a condition requiring systemic treatment with either corticosteroids (> 10 mg daily prednisone equivalents) or other immunosuppressive medications within 14 days of study treatment administration
5. History of interstitial lung disease or pneumonitis
6. Prior treatment with immune checkpoint inhibitors and mitogen-activated protein kinase enzymes (MEK) inhibitors
7. History of allergy or hypersensitivity to study drug components

Other protocol defined inclusion/exclusion criteria apply