Journal
BIOLOGICAL PSYCHIATRY
Volume 57, Issue 11, Pages 1367-1373Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.biopsych.2004.10.021
Keywords
pharmacogenomics; ADHD; drug response; methylphenidate; candidate genes
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Although the efficacy of inedications for attention-deficit/hyperactivity disorder (ADHD) is well demonstrated in clinical trials, substantial numbers of patients fail to remain oil therapy and there is tremendous venerability in tolerability and treatment acceptance. The emerging science of pharmacogenomics seeks to identify patterns of genetic variation that will direct individually tailored treatment regimens and enhance long-term, adherence. For this review, existing studies in ADHD pharmacogenomics were reviewed to assess current knowledge and provide a basis for planning,future research. Twelve studies were identified. The monopoly investigated the role of candidate genes in predicting clinical response to methylphenidate. The most frequent studied is DAT1, although findings are inconsistent, with the 10-repeat polymorphism predicting both increased and decreased reduction in various. Other candidates include DRD4, DRD5, DBH, 5HTT. SNAP-25, and COMT One study was based oil quantative trait analyses in a genome-wide scan. Although interest in ADHD pharmacogenomics is encouraging preliminary studies have been limited by small sample sizes, inconsistent research designs, retrospective reports, and a focus on symptom response. Future studies should emphasize large, prospective trials, assess multiple ineducations in individual subjects, and consider a full range of pharmacodynamic and pharmacokinetic outcomes.
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