In Phase 2, the primary endpoints were complete response in Cohort A1 (cHL anti‐PD‐1/programmed death‐ligand 1 [PD‐L1] naïve), and objective response rate in Cohorts A2 (cHL anti‐PD‐1/PD‐L1 progressors), B (DLBCL), and C (PTCL). Here, CD274 is linked to mature T-cell and NK-cell non-Hodgkin lymphoma.