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    Mol Psychiatry. 1999 Nov;4(6):558-65.

    Family-based association studies of bipolar disorder with candidate genes involved in dopamine neurotransmission: DBH, DAT1, COMT, DRD2, DRD3 and DRD5.

    Source

    Neuropsychiatric Genetics Unit, Division of Psychological Medicine, Tenovus Building, University of Wales College of Medicine, Heath Park, Cardiff, CF4 4XN, UK. kirov@cardiff.ac.uk

    Abstract

    The dopaminergic system has been implicated in the aetiology of mood disorders. We conducted family-based association studies for polymorphisms at three genes involved in the metabolism of dopamine: dopamine transporter (DAT1), dopamine-beta-hydroxylase (DBH) and catechol-O-methyl transferase (COMT); and three dopamine receptors: DRD2, DRD3 and DRD5. We used a sample of 122 parent-offspring trios of British Caucasian origin where the proband had bipolar disorder I (BPI), and analysed the results with the transmission/disequilibrium test (TDT) which is robust to hidden population stratification. No statistically significant differences were found between transmitted and not transmitted alleles for any of the polymorphisms studied.

    PMID:
    10578238
    [PubMed - indexed for MEDLINE]

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