CD274 and non-small cell lung carcinoma: Furthermore, stratification of patients by quantification of NK receptors from blood samples could be a useful prognostic and predictive tool: low expression of Natural Cytotoxicity Triggering Receptor (NCR) 1 and 3 correlated with worse prognosis in NSCLC and PD-L1-positive (>5%) patients, and low NCR3 expression correlated with the worse outcome to anti-PD1 (113).