ArticleCarcinogenesis2016
Genetic determinants of CYP2A6 activity across racial/ethnic groups with different risks of lung cancer and effect on their smoking intensity.
Article in Carcinogenesis, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
41 citing papers in PubMed, 54 citations in OpenAlex.
- Trial
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- Genetic risk stratification and preventive strategies for double primary HNSCC and ESCC: a single-center cohort study.Esophagus : official journal of the Japan Esophageal Society · 2026Article
- PharmVar GeneFocus: CYP2A6.Clinical pharmacology and therapeutics · 2024Review
- Association of Urinary Biomarkers of Tobacco Exposure with Lung Cancer Risk in African American and White Cigarette Smokers in the Southern Community Cohort Study.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2024Article
- Association of Urinary N7-(1-hydroxyl-3-buten-1-yl) Guanine (EB-GII) Adducts and Butadiene-Mercapturic Acids with Lung Cancer Development in Cigarette Smokers.Chemical research in toxicology · 2024Article
- Plasma nicotine and its metabolite as biomarkers of tobacco exposure and their relevance to pulmonary nodule.Biomarkers in medicine · 2024Article
- Article
- Association of Urinary Biomarkers of Smoking-Related Toxicants with Lung Cancer Incidence in Smokers: The Multiethnic Cohort Study.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2023Article
- Inhibition of Nicotine Metabolism by Cannabidiol (CBD) and 7-Hydroxycannabidiol (7-OH-CBD).Chemical research in toxicology · 2023Article
- Quantitation of Ten Urinary Nicotine Metabolites, Including 4-Hydroxy-4-(3-pyridyl) Butanoic Acid, a Product of Nicotine 2'-Oxidation, and CYP2A6 Activity in Japanese Americans, Native Hawaiians, and Whites.Chemical research in toxicology · 2023Article
- Exploring Potential for a Personalized Medicine Approach to Smoking Cessation With an American Indian Tribe.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2023Article
- Smokeless tobacco and cigarette smoking: chemical mechanisms and cancer prevention.Nature reviews. Cancer · 2022Review
- Ethnic differences in excretion of butadiene-DNA adducts by current smokers.Carcinogenesis · 2021Article
- Ethnic Differences of Urinary Cadmium in Cigarette Smokers from the Multiethnic Cohort Study.International journal of environmental research and public health · 2021Article
- RNA splicing and aggregate gene expression differences in lung squamous cell carcinoma between patients of West African and European ancestry.Lung cancer (Amsterdam, Netherlands) · 2021Article
- Recommendations to researchers for aiding in increasing American Indian representation in genetic research and personalized medicine.Personalized medicine · 2021Article
- Applying Tobacco, Environmental, and Dietary-Related Biomarkers to Understand Cancer Etiology and Evaluate Prevention Strategies.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2020Article
- Metabolomics Profiles of Smokers from Two Ethnic Groups with Differing Lung Cancer Risk.Chemical research in toxicology · 2020Article
- Genetic polymorphisms of pharmacogenomic VIP variants in the Dai population from Yunnan province.Molecular genetics & genomic medicine · 2020Article
Corrections and comments
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Authors and funding
7 authors at 4 institutions in 1 country.
Funding
Abstract
Genetic variation in cytochrome P450 2A6 (CYP2A6) gene is the primary contributor to the intraindividual and interindividual differences in nicotine metabolism and has been found to influence smoking intensity. However, no study has evaluated the relationship between CYP2A6 genetic variants and the CYP2A6 activity ratio (total 3-hydroxycotinine/cotinine) and their influence on smoking intensity [total nicotine equivalents (TNE)], across five racial/ethnic groups found to have disparate rates of lung cancer. This study genotyped 10 known functional CYP2A6 genetic or copy number variants in 2115 current smokers from the multiethnic cohort study [African Americans (AA) = 350, Native Hawaiians (NH) = 288, Whites = 413, Latinos (LA) = 437 and Japanese Americans (JA) = 627] to conduct such an investigation. Here, we found that LA had the highest CYP2A6 activity followed by Whites, AA, NH and JA, who had the lowest levels. Adjusting for age, sex, race/ethnicity and body mass index, we found that CYP2A6 diplotypes were predictive of TNE levels, particularly in AA and JA (P trend < 0.0001). However, only in JA did the association remain after accounting for cigarettes per day. Also, it is only in this population that the lower activity ratio supports lower TNE levels, carcinogen exposure and thereby lower risk of lung cancer. Despite the association between nicotine metabolism (CYP2A6 activity phenotype and diplotypes) and smoking intensity (TNE), CYP2A6 levels did not correlate with the higher TNE levels found in AA nor the lower TNE levels found in LA, suggesting that other factors may influence smoking dose in these populations. Therefore, further study in these populations is recommended.
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