Genetic influences on alcohol use across stages of development: GABRA2 and longitudinal trajectories of drunkenness from adolescence to young adulthood.
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Author
Dick, Danielle MCho, Seung Bin
Latendresse, Shawn J
Aliev, Fazil
Nurnberger, John I
Edenberg, Howard J
Schuckit, Marc
Hesselbrock, Victor M
Porjesz, Bernice
Bucholz, Kathleen
Wang, Jen-Chyong
Goate, Alison
Kramer, John R
Kuperman, Samuel
Journal title
Addiction biologyDate Published
2013-05-20Publication Volume
19Publication Issue
6Publication Begin page
1055Publication End page
64
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Show full item recordAbstract
Longitudinal analyses allow us to understand how genetic risk unfolds across development, in a way that is not possible with cross-sectional analyses of individuals at different ages. This has received little attention in genetic association analyses. In this study, we test for genetic effects of GABRA2, a gene previously associated with alcohol dependence, on trajectories of drunkenness from age 14 to 25. We use data from 1070 individuals who participated in the prospective sample of the Collaborative Study on the Genetics of Alcoholism, in order to better understand the unfolding of genetic risk across development. Piecewise linear growth models were fit to model the influence of genotype on rate of increase in drunkenness from early adolescence to young adulthood (14-18 years), the change in drunkenness during the transition to adulthood (18-19 years) and the rate of change in drunkenness across young adulthood (≥ 19 years). Variation in GABRA2 was associated with an increase in drunkenness that occurred at the transition between adolescence and adulthood. The genotypic effect was more pronounced in females. These analyses illustrate the importance of longitudinal data to characterize how genetic effects unfold across development. The findings suggest that transitions across important developmental periods may alter the relative importance of genetic effects on patterns of alcohol use. The findings also suggest the importance of considering gender when evaluating genetic effects on drinking patterns in males and females.Citation
Dick DM, Cho SB, Latendresse SJ, Aliev F, Nurnberger JI Jr, Edenberg HJ, Schuckit M, Hesselbrock VM, Porjesz B, Bucholz K, Wang JC, Goate A, Kramer JR, Kuperman S. Genetic influences on alcohol use across stages of development: GABRA2 and longitudinal trajectories of drunkenness from adolescence to young adulthood. Addict Biol. 2014 Nov;19(6):1055-64. doi: 10.1111/adb.12066. Epub 2013 May 20. PMID: 23692184; PMCID: PMC3783626.DOI
10.1111/adb.12066ae974a485f413a2113503eed53cd6c53
10.1111/adb.12066
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- Creative Commons
Except where otherwise noted, this item's license is described as © 2013 Society for the Study of Addiction.
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