Navigation Links
Gene variations linked to lung cancer susceptibility in Asian women
Date:11/11/2012

An international group of scientists has identified three genetic regions that predispose Asian women who have never smoked to lung cancer. The finding provides further evidence that risk of lung cancer among never-smokers, especially Asian women, may be associated with certain unique inherited genetic characteristics that distinguishes it from lung cancer in smokers.

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.

The consortium, whose findings were reported Nov.11, 2012, online in Nature Genetics, conducted a GWAS that combined data from 14 studies that included a total of approximately 14,000 Asian women (6,600 with lung cancer and 7,500 without lung cancer). The studies included data on environmental factors, including exposure to secondhand smoke.

The consortium found that variations at three locations in the genometwo on chromosome 6 and one on chromosome 10were associated with lung cancer in Asian female never-smokers. The discovery on chromosome 10 was particularly significant because it has not been found in any other GWAS of lung cancer in white or Asian populations.

"Our study provides strong evidence that common inherited genetic variants contribute to an increased risk of lung cancer among Asian women who have never smoked," said Nathaniel Rothman, M.D., a senior investigator in NCI's Division of Cancer Epidemiology and Genetics and coauthor of the study. "These variants may also increase lung cancer risk associated with environmental factors, such as environmental tobacco smoke."

The researchers did not detect an association with variations at a location on chromosome 15 that has been associated with lung cancer risk in many previous GWAS of lung cancer in smokers. The absence of this association provides further support for the suggestion that the genetic variation on chromosome 15 may be smoking-related.

The researchers found some evidence that Asian women with one of the newly identified genetic variants may be more susceptible to the effects of environmental tobacco smoke. However, the authors note that more research is needed to draw definitive conclusions from this observation.

"This study is an example of how genome-wide association susceptibility studies can evaluate inherited genetic risk in populations with unique characteristics or environmental exposures," said Stephen J. Chanock, M.D., acting co-director of NCI's Center for Cancer Genomics and a co-author of the study. "We will continue to develop better, smarter applications of this technique and apply them to populations where we have detailed information on environmental factors to further our understanding of how inherited genetic factors modify risk from environmental exposures."


'/>"/>

Contact: NCI Press Office
ncipressofficers@mail.nih.gov
301-496-6641
NIH/National Cancer Institute
Source:Eurekalert  

Related biology news :

1. Variations of a single gene can lead to too much or too little growth, study shows
2. USF researchers identify gene mutation linked to old age hearing loss
3. Sinusitis linked to microbial diversity
4. BUSM/VA Boston Healthcare System investigators identify new gene linked to PTSD
5. Protein involved in DNA replication, centrosome regulation linked to dwarfism, small brain size
6. Gene mutations linked to most cases of rare disorder -- Alternating Hemoplegia of Childhood
7. BGI reports the latest finding on NMNAT1 mutations linked to Leber congenital amaurosis
8. New gene mutations linked to ALS and nerve cell growth dysfunction
9. Viruses linked to algae that control coral health
10. Myelodysplastic syndromes (MDS) linked to abnormal stem cells
11. Low vitamin D levels linked to weight gain in some older women
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Gene variations linked to lung cancer susceptibility in Asian women
(Date:6/21/2016)... 2016 NuData Security announced today that Randy ... principal product architect and that Jon Cunningham ... development. Both will report directly to Christopher ... reflect NuData,s strategic growth in its product and ... demand and customer focus values. ...
(Date:6/16/2016)... , June 16, 2016 ... is expected to reach USD 1.83 billion by ... View Research, Inc. Technological proliferation and increasing demand ... are expected to drive the market growth. ... The development of advanced multimodal techniques ...
(Date:6/9/2016)... innovation leader in attendance control systems is proud to announce the introduction of fingerprint ... sure the right employees are actually signing in, and to even control the opening ... ... ... Photo ...
Breaking Biology News(10 mins):
(Date:12/2/2016)... ... December 01, 2016 , ... ... for North American hospitals, will present its chain-of-custody solution for tracking and securing ... Las Vegas, Nev., Dec. 4-8, 2016. , Aerocom has a proven solution for ...
(Date:12/2/2016)... IL (PRWEB) , ... December 01, 2016 , ... ... to congratulate long-term client Nanowear on their recent FDA Class II 510(k) clearance ... cleared a significant hurdle in commercializing remote cardiac monitoring devices that rely on ...
(Date:12/2/2016)... The immunohistochemistry (IHC) market is projected to reach ... during the forecast period of 2016 to 2021 dominated by immunohistochemistry ... the largest share of immunohistochemistry (IHC) market, by end user.   ... , , ... across 225 pages, profiling 10 companies and supported with 181 tables ...
(Date:11/30/2016)... ALBANY, New York , November 30, 2016 /PRNewswire/ ... exceptionally consolidated as a few players hold a dominant ... Lonza Group, Charles River Laboratories International, Inc., and Merck ... global market in 2015. Transparency Market Research observes that ... they are focused on development products that are do ...
Breaking Biology Technology: