Evaluation of prognostic factors using nutritional indicators in extensive-stage small cell lung cancer

Objective: The Glasgow Prognostic Score (GPS), Prognostic Nutritional Index (PNI), and Neutrophil-to-Lymphocyte Ratio (NLR) have been shown to predict the prognosis of various cancer types. However, the prognostic roles of GPS, PNI, and NLR in patients with extensive-stage small cell lung cancer (ES-SCLC) remain controversial. This study aimed to assess the prognostic value of these three immunonutritional indicators in patients with ES-SCLC. Patients and Methods: We retrospectively analyzed 102 ES-SCLC patients who received first-line platinum-doublet chemotherapy. The GPS, PNI, and NLR were assessed before the initiation of first-line chemotherapy. Based on previous reports, the optimal cut-off levels were 40 for PNI and 3 for NLR. The Kaplan-Meier method and Cox proportional hazards models were used to evaluate progression-free survival (PFS) and overall survival (OS). Results: =0.303). Multivariate analyses revealed that the GPS and PNI were independently associated with worse PFS and OS. Conclusion: Our study demonstrated that both the GPS and PNI were significantly associated with PFS and OS in patients with ES-SCLC. The GPS may be a simple and reliable immunonutritional marker for predicting outcomes in patients with ES-SCLC treated with platinum doublet chemotherapy.