Laboratory Parameters Associated with Inflammation Do Not Affect PD-L1 Expression in Non-small Cell Lung Cancer
Abstract
Background/Aim: Due to some interconnectedness at the molecular level, this study assessed the possible influence of laboratory parameters associated with systemic inflammatory environment on programmed death-ligand 1 (PD-L1) expression in non-small cell lung carcinoma (NSCLC). Patients and Methods: We assessed effects of creactive protein (CRP), albumin, haemoglobin, neutrophil, and lymphocyte levels on PD-L1 expression in NSCLC.
Patient data were obtained retrospectively from LUCAS, the Czech registry of patients with lung carcinomas. Correlations of two continuous parameters (PD-L1 expression and laboratory parameters) were analysed by correlation coefficient.
Differences in continuous parameters between two or more groups were tested by Mann-Whitney or Kruskal-Wallis tests. Independence of two categorical parameters was tested by chi-square test.
Results: We demonstrated no influence of the investigated laboratory parameters on PD-L1 expression in NSCLC, either in continuous or categorical division of variables. Conclusion: Inflammatory laboratory parameters at time of NSCLC diagnosis are unlikely to affect the determination of PD-L1 expression.