CD274 and neoplasm: Despite patients with tumor PD-L1 CPS (≥ 1%) showing a relatively long PFS, one patient with a high baseline blood NLR of 12 showed a very short PFS of 0.95 months, whereas in two patients with low baseline blood NLR (2.7 and 1.2), a relatively long PFS with a durable response was observed despite tumor PD-L1 CPS (< 1%).