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  • Title: The prognostic value of prognostic nutritional index (PNI) and neutrophil to lymphocyte ratio (NLR) for advanced non-small cell lung cancer treated with platinum-based chemotherapeutics.
    Author: Wang J, Liu Y, Mi X, Shao M, Liu L.
    Journal: Ann Palliat Med; 2020 May; 9(3):967-978. PubMed ID: 32389020.
    Abstract:
    BACKGROUND: The present study aimed to investigate the relationship between prognostic nutritional index (PNI) and peripheral blood neutrophil to lymphocyte ratio (NLR), and the prognosis of patients with advanced non-small cell lung cancer (NSCLC) treated with platinum-based therapeutics. METHODS: The data of 99 advanced NSCLC patients treated with platinum chemotherapeutics between January 2011 and June 2019 were retrospectively analyzed. The association between PNI and NLR and the clinicopathological characteristics of the patients was examined. The patients were randomized into high or low groups according to PNI and NLR. The predictive value of PNI and NLR for overall survival (OS) was evaluated by receiver operating characteristic (ROC) curve analysis. Univariate and multivariate Cox proportional hazards regression analyses were performed to investigate the prognostic factors of advanced NSCLC patients treated with platinum-based chemotherapeutics. The association between PNI and NLR and progression-free survival (PFS) or OS was determined using the Kaplan-Meier method and compared between groups using the log-rank test. RESULTS: The ROC curve analysis determined the optimal cut-off values of PNI and NLR for predicting OS to be 52.525 and 3.525, respectively. Univariate analysis indicated that low Karnofsky performance scale (KPS) score (P=0.005), poor tumor differentiation (P=0.022), brain metastasis (P<0.001), and low PNI (P=0.001) were independent risk factors for PFS in patients with advanced NSCLC; however, there was no significant correlation observed between NLR (P=0.082) and PFS in patients with advanced NSCLC. Low KPS score (P=0.003), poor tumor differentiation (P=0.001), brain metastasis (P<0.001), low PNI (P<0.001), and high NLR (P=0.046) were significantly associated with shorter OS. Furthermore, Cox multivariate analysis revealed that brain metastasis (P=0.005) and low PNI (P=0.008) were significant independent prognostic factors for PFS, while brain metastasis (P=0.003) and low PNI (P=0.028) were also found to be significant independent risk factors for poor OS. CONCLUSIONS: PNI is a reliable, simple, easily available, and inexpensive biomarker for predicting the prognosis of advanced NSCLC patients treated with platinum-based chemotherapeutics in routine clinical practice. Furthermore, PNI is superior to NLR in as a prognostic indicator for advanced NSCLC patients treated with platinum-based chemotherapeutics.
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