Preliminary Findings on the Predictive Value of Hematologic Inflammatory Indices for Survival in Treatment-Naïve Non-Metastatic Nasopharyngeal Carcinoma: A Retrospective Cohort Study

Background/Objectives: Prognostic stratification in non-metastatic nasopharyngeal carcinoma (NPC) remains challenging, particularly among patients within the same TNM stage. Readily available hematologic inflammatory indices may reflect host–tumor interactions and provide additional prognostic information beyond conventional clinicopathologic factors. This study evaluated the prognostic value of pretreatment hematologic inflammatory indices for overall survival (OS) and progression-free survival (PFS) in patients with non-metastatic NPC. Methods: This single-center retrospective cohort study included adult patients with non-metastatic NPC diagnosed at a tertiary referral center between 20 February 2014 and 2 May 2023, with outcomes ascertained through 12 December 2023. Pretreatment complete blood count and biochemical parameters were used to calculate the neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, systemic immune-inflammation index, pan-immune-inflammation value (PIV), and hemoglobin–albumin–lymphocyte–platelet score. Receiver operating characteristic analysis determined optimal cut-off values for mortality discrimination. Associations with OS and PFS were assessed using Cox regression models. Results: Forty-six patients were analyzed, including 37 males. Median OS and PFS were 45.90 and 37.05 months, respectively. Compared with survivors, non-survivors were older and had lower hemoglobin and albumin levels, higher PIV, NLR, PLR, and SII values, and lower HALP scores. Although NLR showed the highest conventional ROC performance for mortality discrimination, PIV retained prognostic significance in multivariable Cox models and showed stable time-dependent discrimination for PFS. Conclusions: These preliminary findings suggest that pretreatment inflammatory indices, particularly composite markers such as PIV, may provide adjunctive prognostic information in treatment-naïve non-metastatic NPC, pending larger prospective validation.