CD274 and neoplasm: After a median follow‐up of 2.5 months (95% CI, 2.0–4.2 months), patients with high tumor PD‐L1 expression (TPS ≥50%) had a longer PFS duration than those with low or unknown PD‐L1 expression (6.3 vs. 2.1 months in median, p < 0.05).