This phase III study is comparing the effectiveness of different immunotherapies (ociperlimab, tislelizumab and durvalumab), combined with concurrent chemoradiation therapy, in people with previously untreated, locally advanced non-small cell lung cancerPhase 3, Randomized, Open Label Study to Compare Ociperlimab (BGB-A1217) Plus Tislelizumab (BGB-A317) Plus Concurrent Chemoradiotherapy (cCRT) Followed by Ociperlimab Plus Tislelizumab or Tislelizumab Plus cCRT Followed by Tislelizumab Versus cCRT Followed by Durvalumab in Previously Untreated, Locally Advanced, Unresectable Non-Small Cell Lung Cancer

Exclusion

1. Prior therapy with an anti-PD-1, anti-PD-L1, anti-PD-L2, TIGIT, or any other antibody or drugs specifically targeting T-cell co-stimulation or checkpoint pathways.
2. Diagnosed with NSCLC that harbors an epidermal growth factor receptor (EGFR) sensitizing mutation, anaplastic lymphoma kinase (ALK) gene translocation, ROS1 gene translocation or RET gene rearrangement.
3. Participants who received systemic anticancer treatment besides the specified cCRT.
4. Any unresolved toxicity CTCAE > Grade 2 from the prior cCRT.
5. Active autoimmune diseases or history of autoimmune diseases that may relapse.
6. Any condition that required systemic treatment with either corticosteroids (> 10 mg daily of prednisone [in Japan, prednisolone] or equivalent) or other immunosuppressive medication ≤ 14 days before the first dose of study treatment.
7. Infection (including tuberculosis infection, etc) requiring systemic antibacterial, antifungal, or antiviral therapy within 14 days before the first dose of study treatment.

Note: Antiviral therapy is permitted for participants with chronic hepatitis B virus (HBV) or hepatitis C virus (HCV) infection.

NOTE: Other protocol Inclusion/Exclusion criteria may apply.