Similarly, there was a significant association between the expression of PD‐1 and PD‐L1 in the metastatic tumors (P < .0001): 41 (27%) did not express either PD‐1 or PD‐L1, 94 (61%) only expressed PD‐1, one (<1%) only expressed PD‐L1, and 18 (12%) expressed both PD‐1 and PD‐L1 (P < .0001; Table S3). The gene discussed is CD274; the disease is metastatic neoplasm.