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Clinical and Genomic Characteristics of Small Cell Lung Cancer in Never Smokers: Results From a Retrospective Multicenter Cohort Study

Authors :
Anish, Thomas
Idrees, Mian
Camille, Tlemsani
Lorinc, Pongor
Nobuyuki, Takahashi
Kathleen, Maignan
Jeremy, Snider
Gerald, Li
Garrett, Frampton
Siraj, Ali
Sehyun, Kim
Samantha, Nichols
Vinodh, Rajapakse
Udayan, Guha
Elad, Sharon
Junya, Fujimoto
Cesar A, Moran
Ignacio I, Wistuba
Jun S, Wei
Javed, Khan
Eva, Szabo
Aracelis Z, Torres
Kenneth R, Carson
Source :
Chest
Publication Year :
2019

Abstract

BACKGROUND: Small cell lung cancer (SCLC) has the strongest association with smoking among lung cancers. The characteristics of never smokers with SCLC is not known. RESEARCH QUESTION: Are the clinical characteristics, prognostic factors, survival, genomic alterations, and tumor mutational burdens of SCLC in patients who have never smoked different from those who have smoked? STUDY DESIGN AND METHODS: A retrospective multicenter cohort study of patients with clinician-confirmed SCLC was performed with the use of a longitudinal and nationally representative electronic medical records database. Smoking history was assessed through technology-enabled abstraction and confirmed for never smokers via chart review. Genomic characteristics of never smoker patients with SCLC were examined with the use of a next-generation sequencing-based gene panel and whole exome sequencing. RESULTS: One hundred of 5,632 patients (1.8%) with SCLC were never smokers. Relative to smokers, never smokers were more likely to be female (66.0% vs 52.4%; P = .009) and present with extensive stage (70.0% vs 62.2%; P = .028). Never smokers had a higher proportion of patients in age groups 35 to 49 years (7.0% vs 3.0%; P = .006) and ≥80 years (17.0% vs 8.2%; P = .006). Known risk factors for lung cancer were found in

Details

ISSN :
19313543
Volume :
158
Issue :
4
Database :
OpenAIRE
Journal :
Chest
Accession number :
edsair.pmid..........374d8ea9547fad52bc984cf17c8ee3a9