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Title

Association of a novel polymorphism of the β2-chimaerin gene (CHN2) with smoking

AuthorsBarrio-Real, Laura; Barrueco, Miguel; González-Sarmiento, Rogelio ; Caloca, María J.
Issue Date2013
PublisherLippincott Williams & Wilkins
CitationJournal of Investigative Medicine 61(7): 1129-1131 (2013)
Abstract[Objective]: The CHN2 gene encodes the β2-chimaerin, a Rac-specific guanosine-5′-triphosphatase activating protein with an important role in the establishment of functional brain circuitry by controlling axon pruning. Genetic studies suggest that the CHN2 gene harbors variants that contribute to addiction vulnerability and smoking behavior. To further evaluate the role of β2-chimaerin in nicotine addiction, we investigated the association of 3 individual polymorphisms of the CHN2 gene with smoking dependence. [Methods]:Three hundred sixty-one healthy volunteers, 173 smokers (mean ± SD age, 60.4 ± 1.4 years) and 188 control subjects (mean ± SD age, 45.9 ± 1.4 years) were genotyped for 3 single-nucleotide polymorphisms in the CHN2 gene (rs3750103, rs12112301, and rs186911567). The association of these polymorphisms with smoking habits was analyzed. [Results]:There was no significant association of polymorphisms rs12112301 and rs3750103 with smoking. However, there was a significant difference in the frequency of the rs186911567 polymorphism between the smokers and the controls (P = 0.003).[Conclusions]: We report for the first time a significant association of the novel rs186911567 polymorphism of the CHN2 gene with smoking.
Publisher version (URL)http://dx.doi.org/10.231/JIM.0b013e3182a32ff9
URIhttp://hdl.handle.net/10261/116785
DOI10.231/JIM.0b013e3182a32ff9
Identifiersdoi: 10.231/JIM.0b013e3182a32ff9
issn: 1081-5589
e-issn: 1708-8267
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