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Genetic Contribution to Alcohol Dependence: Investigation of a Heterogeneous German Sample of Individuals with Alcohol Dependence, Chronic Alcoholic Pancreatitis, and Alcohol-Related Cirrhosis.


ABSTRACT: The present study investigated the genetic contribution to alcohol dependence (AD) using genome-wide association data from three German samples. These comprised patients with: (i) AD; (ii) chronic alcoholic pancreatitis (ACP); and (iii) alcohol-related liver cirrhosis (ALC). Single marker, gene-based, and pathway analyses were conducted. A significant association was detected for the ADH1B locus in a gene-based approach (puncorrected = 1.2 × 10-6; pcorrected = 0.020). This was driven by the AD subsample. No association with ADH1B was found in the combined ACP + ALC sample. On first inspection, this seems surprising, since ADH1B is a robustly replicated risk gene for AD and may therefore be expected to be associated also with subgroups of AD patients. The negative finding in the ACP + ALC sample, however, may reflect genetic stratification as well as random fluctuation of allele frequencies in the cases and controls, demonstrating the importance of large samples in which the phenotype is well assessed.

SUBMITTER: Treutlein J 

PROVIDER: S-EPMC5541316 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Genetic Contribution to Alcohol Dependence: Investigation of a Heterogeneous German Sample of Individuals with Alcohol Dependence, Chronic Alcoholic Pancreatitis, and Alcohol-Related Cirrhosis.

Treutlein Jens J   Frank Josef J   Streit Fabian F   Reinbold Céline S CS   Juraeva Dilafruz D   Degenhardt Franziska F   Rietschel Liz L   Witt Stephanie H SH   Forstner Andreas J AJ   Ridinger Monika M   Strohmaier Jana J   Wodarz Norbert N   Dukal Helene H   Foo Jerome C JC   Hoffmann Per P   Herms Stefan S   Heilmann-Heimbach Stefanie S   Soyka Michael M   Maier Wolfgang W   Gaebel Wolfgang W   Dahmen Norbert N   Scherbaum Norbert N   Müller-Myhsok Bertram B   Lucae Susanne S   Ising Marcus M   Stickel Felix F   Berg Thomas T   Roggenbuck Ulla U   Jöckel Karl-Heinz KH   Scholz Henrike H   Zimmermann Ulrich S US   Buch Stephan S   Sommer Wolfgang H WH   Spanagel Rainer R   Brors Benedikt B   Cichon Sven S   Mann Karl K   Kiefer Falk F   Hampe Jochen J   Rosendahl Jonas J   Nöthen Markus M MM   Rietschel Marcella M  

Genes 20170717 7


The present study investigated the genetic contribution to alcohol dependence (AD) using genome-wide association data from three German samples. These comprised patients with: (i) AD; (ii) chronic alcoholic pancreatitis (ACP); and (iii) alcohol-related liver cirrhosis (ALC). Single marker, gene-based, and pathway analyses were conducted. A significant association was detected for the <i>ADH1B</i> locus in a gene-based approach (<i>p</i><sub>uncorrected</sub> = 1.2 × 10<sup>-6</sup>; <i>p</i><sub  ...[more]

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