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  • Title: [ADHD and alcohol dependence: a common genetic predisposition?].
    Author: Wodarz N, Lange K, Laufkötter R, Johann M.
    Journal: Psychiatr Prax; 2004 Nov; 31 Suppl 1():S111-3. PubMed ID: 15570522.
    Abstract:
    INTRODUCTION: Nearly 50 % of subjects with continuing symptoms of attention-deficit hyperactivity disorder (ADHD) in adulthood show a comorbid substance use disorder. Both, ADHD and alcohol dependence have a high genetic load and might even share overlapping sources of genetic liability. METHOD: We investigated phenotype and 5-HTT/5-HT2c allelic characteristics in 314 alcoholics of German descent. RESULT: 21 % of the alcoholics fulfilled DSM-IV-criteria of ADHD with ongoing symptoms in adulthood. There was no significant difference in 5-HTT- or 5-HT2c-allele distribution between alcoholics and matched controls or between alcoholics with or without ADHD. CONCLUSION: In our sample the functional relevant 5-HTT-promoter and the 5-HT2c-receptor Cys23Ser polymorphism do not contribute to the supposed common genetic predisposition of ADHD and alcohol dependence.
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