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  Gene Variations Linked To Lung Cancer Susceptibility
by Immediate Release ,  National Institute of Health | 2012-11-16

Lung cancer in never-smokers is the seventh leading cause of cancer deaths worldwide, and the majority of lung cancers diagnosed historically among women in Eastern Asia have been in women who never smoked. The specific genetic variations found in this study had not been associated with lung cancer risk in other populations.

Although environmental factors, such as secondhand smoke (also known as environmental tobacco smoke) or exhaust from indoor cooking are likely account for some cases of lung cancer among Asian women who have never smoked, they explain only a small proportion of the disease. To gain a better understanding of lung cancer in Asian female never-smokers, researchers from the National Cancer Institute (NCI), part of the National Institutes of Health, partnered with researchers from several other countries to create the Female Lung Cancer Consortium in Asia to conduct one of the largest genome-wide association studies (GWAS) in female never-smokers to date. GWAS compares DNA markers across the genome between people with a disease or trait to people without the disease or trait.

"This study is the first large-scale genome-wide association study of lung cancer among never-smoking females anywhere in the world," said Qing Lan, M.D., Ph.D. , a senior investigator in NCI’s Division of Cancer Epidemiology and Genetics, and the leader of the study.

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