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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Pilot study of the cytochrome P450-2D6 genotype in a psychiatric state hospital.

OBJECTIVE: The authors conducted a pilot study to develop preliminary data on the frequency of cytochrome P450-2D6 (CYP2D6) genotypes in state psychiatric hospital patients and to establish population sizes needed to determine potential clinical relevance in therapeutic outcome. METHOD: One hundred consecutive inpatients at Eastern State Hospital in Kentucky who provided informed consent were genotyped at the CYP2D6 locus during their hospital stay. RESULTS: Twelve of the patients were CYP2D6 deficient, and four carried the *1Xn or *2Xn allele associated with ultrarapid metabolism; all of these patients were Caucasian (N=87). The rate of deficiency in CYP2D6 expression in these Caucasian state psychiatric hospital patients (14%) was twice that of the U.S. population (7%). The patients with CYP2D6 deficiency also appeared more likely to experience side effects in response to CYP2D6 medications. CONCLUSIONS: This study, limited by a small number of subjects, suggests that one-fifth of Caucasians admitted to a state hospital in Kentucky had genotypes associated with extremes in CYP2D6 activity that may have affected their response to CYP2D6 medications.[1]


  1. Pilot study of the cytochrome P450-2D6 genotype in a psychiatric state hospital. de Leon, J., Barnhill, J., Rogers, T., Boyle, J., Chou, W.H., Wedlund, P.J. The American journal of psychiatry. (1998) [Pubmed]
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