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Alpha-1 antitrypsin deficiency and risk of lung cancer in never-smokers: a multicentre case–control study
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Alpha-1 antitrypsin deficiency and risk of lung cancer in never-smokers: a multicentre case–control study
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Journal Article
Alpha-1 antitrypsin deficiency and risk of lung cancer in never-smokers: a multicentre case–control study
2022
Overview
Background
Lung cancer (LC) is the most commonly diagnosed cancer and the leading cause of cancer-related death in both sexes worldwide. Although the principal risk factor in the western world is tobacco smoking, genetic factors, including alpha-1 antitrypsin deficiency (AATD), have been associated with increased risk. This study is the continuation of an earlier one published by the same group in 2015, aimed at analysing risk of LC in never-smokers, associated with carriers of the AATD genotype.
Methods
A multicentre case–control study was conducted in Spain across the period January 2011 to August 2019. Cases were non-smokers diagnosed with LC, and controls were composed of never-smoking individuals undergoing major non-cancer-related surgery. Data were collected on epidemiological characteristics, exposure to environmental tobacco smoke (ETS), residential radon levels, and alpha-1 antitrypsin (AAT) genotype.
Results
The study included 457 cases (42%) and 631 controls (58%), with a predominance of women (72,8%). The most frequent histological type was adenocarcinoma (77.5%), followed by squamous cell carcinoma (7.7%). No association of risk of LC was found with the status of AATD genotype carrier, both overall and broken down by age, sex, or exposure to ETS.
Conclusions
No risk association was found between being a carrier of an AAT deficiency genotype and LC among never-smokers. In order to establish the existence of an association, we consider it important to expand the studies in never smokers in different geographical areas as well as to include patients with previous chronic lung diseases to assess if it influences the risk.
Publisher
BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
Subject
/ Age
/ Aged
/ alpha 1-Antitrypsin - genetics
/ Alpha 1-antitrypsin deficiency
/ alpha 1-Antitrypsin Deficiency - genetics
/ Biomarkers, Tumor - genetics
/ Biomedical and Life Sciences
/ Carcinoma, Squamous Cell - genetics
/ Complications and side effects
/ Female
/ Genetic Predisposition to Disease - epidemiology
/ Genetic Predisposition to Disease - genetics
/ Genotype
/ Health Promotion and Disease Prevention
/ Humans
/ Male
/ Oncology
/ Radon
/ Women
