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Apolipoprotein D is associated with long-term outcome in patients with schizophrenia

Abstract

Accumulating evidence implicates deficiencies in apolipoprotein D (ApoD) function and arachidonic acid signaling in schizophrenic disorders. We addressed two hypotheses in relation to ApoD: first, polymorphisms in the ApoD gene confer susceptibility to or are markers of disease, and, second, genetic variation in the ApoD is associated with long-term clinical outcome to antipsychotic treatment. We genotyped two single-nucleotide polymorphisms in the ApoD gene in 343 chronic patients with schizophrenia spectrum disorders (ICD-10) and 346 control subjects of Danish origin. We did not find ApoD alleles, genotypes or haplotypes to be associated with disease. However, we did find that long-term clinical outcome was associated with the ApoD polymorphism rs7659 (P=0.041) following adjustment for lifetime clinical global impression, age at first admission and gender.

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Acknowledgements

We thank patients who participated in the Danish Psychiatric Biobank and made this study possible. We also acknowledge the help of numerous mental health professionals in the various clinical departments and research technicians. This study was financed through grant to TW from the Danish Research Agency under the Center for Pharmacogenomics and the Danish Psychiatric Research Foundation.

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Correspondence to T Werge.

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Hansen, T., Hemmingsen, R., Wang, A. et al. Apolipoprotein D is associated with long-term outcome in patients with schizophrenia. Pharmacogenomics J 6, 120–125 (2006). https://doi.org/10.1038/sj.tpj.6500350

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