Prognostic index score predicts outcome of patients with Stage I non-small cell lung cancer after stereotactic body radiation therapy.

Prognostic index score predicts outcome of patients with Stage I non-small cell lung cancer after stereotactic body radiation therapy.

Jpn J Clin Oncol. 2019 Jan 31;:

Authors: Shi S, Ye L, Zhao Q, Hu Y, Huang Y, Chen G, Zeng Z, He J

Abstract
Objective: Lung cancer is the most common causes of cancer death worldwide and patients with non-small-cell lung cancer (NSCLC) have various prognosis. We conducted this study to identify the prognostic predictors and establish a prognostic index score (PIS) for patients with Stage I NSCLC after stereotactic body radiation therapy (SBRT).
Methods: A total of 131 consecutive patients with Stage I NSCLC who underwent SBRT in our institute were analyzed retrospectively. The Cox proportional hazards regression model was applied to identify the prognostic predictors. Time-dependent receiver operating characteristic analysis was performed to examine cutoff values for survival. The Kaplan-Meier method with log-rank test was used to compare survival curves.
Results: Univariate analysis indicated that tumor location, maximum standardized uptake value (SUVmax), monocyte counts and platelet-to-lymphocyte ratio (PLR) were prognostic factors of overall survival (OS). SUVmax and PLR remained significant in multivariate analysis. Survival analysis indicated both high-SUVmax and PLR correlated with inferior OS and PFS. A PIS was constructed based on pretreatment SUVmax and PLR and a high PIS was also significantly associated with poor outcome.
Conclusion: The pretreatment SUVmax and PLR were independent prognostic factors of OS in patients with Stage I NSCLC after SBRT. PIS provides a convenient and accurate tool for predicting outcome of patients after SBRT.

PMID: 30715411 [PubMed - as supplied by publisher]

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