Cigarette Smoking Is Associated with Increased Risk of Malignant Gliomas: A Nationwide Population-Based Cohort Study

The association between cigarette smoking and the risk of developing malignant glioma (MG) remains unclear. We aimed to evaluate this potential association in a large general population, using a well-established and validated longitudinal nationwide database. Using data from the Korean National Heal...

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Published inCancers Vol. 12; no. 5; p. 1343
Main Authors Ahn, Stephen, Han, Kyung-Do, Park, Yong-Moon, Bae, Jung Min, Kim, Sang Uk, Jeun, Sin-Soo, Yang, Seung Ho
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 25.05.2020
MDPI
Subjects
Age
Brain cancer
Cigarette smoking
Cigarettes
Cohort analysis
Drug dosages
epidemiologic studies
Glioma
Health risk assessment
Medical prognosis
Population
Population studies
Population-based studies
risk factors
Smoking
Studies
epidemiologic studies
glioma
risk factors
smoking
population
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Summary:The association between cigarette smoking and the risk of developing malignant glioma (MG) remains unclear. We aimed to evaluate this potential association in a large general population, using a well-established and validated longitudinal nationwide database. Using data from the Korean National Health Insurance System cohort, 9,811,768 people over 20 years old without any cancer history in 2009 were followed until the end of 2017. We documented 6100 MG cases (ICD-10 code C71) during the median follow-up period of 7.31 years. Current smokers had a higher risk of developing MG (HR = 1.22, CI: 1.13-1.32) compared with never-smokers, after adjusting for confounders. This association was stronger for those who smoked ≥ 20 cigarettes daily (HR = 1.50, CI: 1.36-1.64). Furthermore, having 30 or more pack-years of smoking over the course of one's lifetime was associated with an increased risk of developing MG in a dose-dependent manner, compared with never-smokers (HR = 1.31, CI: 1.16-1.48 for 30-39 pack-years of smoking; HR = 1.36, CI: 1.17-1.59 for 40-49 pack-years of smoking; HR = 1.68; CI: 1.44-1.95 for ≥ 50 pack-years of smoking). These results suggest that cigarette smoking may be associated with developing MG. Further prospective studies could help elucidate this association.
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ISSN:2072-6694
2072-6694
DOI:10.3390/cancers12051343