Purpose: To explore the value of systemic inflammatory markers as independent prognostic factors andthe extent these markers improve prognostic classification for patients with inoperable advanced or metastaticgastric cancer (GC) receiving palliative chemotherapy.
Methods: We studied the prognostic value of systemicinflammatory factors such as circulating white blood cell count and its components as well as that combined toform inflammation-based prognostic scores (Glasgow Prognostic Score (GPS), Neutrophil-Lymphocyte Ratio(NLR), Platelet Lymphocyte Ratio (PLR), Prognostic Index (PI) and Prognostic Nutritional Index (PNI)) in 384patients with inoperable advanced or metastatic gastric cancer (GC) receiving first-line chemotherapy. Univariateand multivariate analyses were performed to examine the impact of inflammatory markers on overall survival(OS).
Results: Univariate analysis revealed that an elevated white blood cell, neutrophil and/or platelet count,a decreased lymphocyte count, a low serum albumin concentration, and high CRP concentration, as well aselevated NLR/PLR , GPS, PI, PNI were significant predictors of shorter OS. Multivariate analysis demonstratedthat only elevated neutrophil count (HR 3.696, p=0.003) and higher GPS (HR 1.621, p=0.01) were independentpredictors of poor OS.
Conclusion: This study demonstrated elevated pretreatment neutrophil count and highGPS to be independent predictors of shorter OS in inoperable advanced or metastatic GC patients treated withfirst-line chemotherapy. Upon validation of these data in independent studies, stratification of patients usingthese markers in future clinical trials is recommended.