CD274 and mature T-cell and NK-cell non-Hodgkin lymphoma: Median (range) duration of exposure and number of cycles, respectively were 33.0 (6–69) weeks and 8.5 (1–21) in the cHL anti‐PD‐1/PD‐L1 naïve cohort, 36.1 (4–83) weeks and 10.0 (1–25) in the cHL anti‐PD‐1/PD‐L1 progressors cohort, 4.0 (2–41) weeks and 1.0 (1–11) in the DLBCL cohort, and 4.1 (2–38) weeks and 1.0 (1–10) in the PTCL cohort.