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Survival and pretreatment prognostic factors for extensive‐stage small cell lung cancer: A comprehensive analysis of 358 patients
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Survival and pretreatment prognostic factors for extensive‐stage small cell lung cancer: A comprehensive analysis of 358 patients
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Journal Article
Survival and pretreatment prognostic factors for extensive‐stage small cell lung cancer: A comprehensive analysis of 358 patients
2021
Overview
Background Extensive‐stage small cell lung cancer (ES‐SCLC) is deemed as a fatal malignancy with a poor prognosis. Although immunotherapy has gradually played an important role in the treatment of ES‐SCLC since 2018, ES‐SCLC treatment data and patient outcome before 2018, when chemotherapy served as a fundamental therapeutic strategy, is still meaningful as a summary of the situation regarding previous medical treatment and is a baseline for comparative data. In addition, the prognostic factors of ES‐SCLC have failed to reach a consensus until now. Therefore, this study aimed to evaluate survival and identify the prognostic factors in an ES‐SCLC population. Methods We retrospectively collected the detailed medical records of 358 patients with ES‐SCLC from January 1, 2011 to December 31, 2018 in a Chinese top‐level cancer hospital. The prognostic factors were evaluated by Cox univariate and multivariate analysis. Results The median overall survival (OS) of ES‐SCLC patients (N = 358) was 14.0 months, the one‐ and two‐year OS rates were 56.2% and 21.7%, respectively. Moreover, we identified two demographic characters (age ≥ 70, smoking index ≥ 400), one tumor burden factor (bone multimetastasis), two tumor biomarkers (cyfra211, CA125) and two laboratory indexes (decreased Na, PLR < 76) as independent prognostic factors for OS in this patient population. Progression‐free survival (PFS) data of 238 patients was obtained for further analysis, and the median PFS was 6.2 months, and six‐month and one‐year PFS rates were 51.7% and 14.3%, respectively. Elevated cyfra211, decreased Hb and Na were identified as independent prognostic factors for PFS. Conclusions This study provides real‐world evidence of the survival and prognosis of ES‐SCLC patients which will enable better evaluation and clinical decision‐making in the future. This study provides real‐world evidence of survival and prognosis of untreated extensive stage small cell lung cancer (ES‐SCLC). We retrospectively collected the detailed medical records of 358 patients with ES‐SCLC from 2011 to 2018 in a Chinese top‐level cancer hospital. The median overall survival (OS) of all patients was 14.0 months, and the one‐ and two‐year OS rates were 56.2% and 21.7%, respectively. The median progression‐free survival (PFS) of 238 patients was 6.2 months, and the six‐month and one‐year PFS rates were 51.7% and 14.3%, respectively. Moreover, several independent prognostic factors for OS and PFS of ES‐SCLC were identified.
