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Int. J. Mol. Sci. 2015, 16(2), 2517-2529; doi:10.3390/ijms16022517

The Influence of AHI1 Variants on the Diagnosis and Treatment Outcome in Schizophrenia

1
Institute of Psychiatry, Department of Biomedical and NeuroMotor Sciences, University of Bologna, Bologna 40123, Italy
2
Department of Psychiatry, the Catholic University of Korea College of Medicine, Seoul 137701, Korea
3
Department of Psychiatry and Behavioural Sciences, Duke University Medical Center, Durham, NC 27710, USA
4
Department of Psychiatry, Korea University, College of Medicine, Seoul 136701, Korea
5
Global Medical Education, New York, NY 15260, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Emil Alexov
Received: 3 October 2014 / Accepted: 15 January 2015 / Published: 22 January 2015
(This article belongs to the Section Molecular Pathology, Diagnostics, and Therapeutics)
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Abstract

The present study aimed to explore whether four single nucleotide polymorphisms (SNPs) within the AHI1 gene could be associated with schizophrenia (SCZ) and whether they could predict the clinical outcomes in SCZ patients treated with antipsychotics. Four hundred twenty-six (426) in-patients with SCZ and 345 controls were genotyped for four AHI1 SNPs (rs11154801, rs7750586, rs9647635 and rs9321501). Baseline and clinical measures for SCZ patients were assessed through the Positive and Negative Syndrome Scale (PANSS). Allelic and genotypic frequencies in SCZ subjects were compared with those of controls using the χ2 statistics. The repeated-measure ANOVA was used for the assessment of treatment outcomes measured by PANSS changes. The case-control analysis did not show any difference in the genotypic distribution of the SNPs, while in the allelic analysis, a weak association was found between the rs9647635 A allele and SCZ. Furthermore, in the haplotype analysis, three haplotypes resulted in being associated with SCZ. On the other hand, two SNPs (rs7750586 and rs9647635) were associated with clinical improvement of negative symptoms in the allelic analysis, although in the genotypic analysis, only trends of association were found for the same SNPs. Our findings suggest a possible influence of AHI1 variants on SCZ susceptibility and antipsychotic response, particularly concerning negative symptomatology. Subsequent well-designed studies would be mandatory to confirm our results due to the methodological shortcomings of the present study. View Full-Text
Keywords: AHI1 gene; polymorphism; schizophrenia; antipsychotic; response AHI1 gene; polymorphism; schizophrenia; antipsychotic; response
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Porcelli, S.; Pae, C.-U.; Han, C.; Lee, S.-J.; Patkar, A.A.; Masand, P.S.; Balzarro, B.; Alberti, S.; De Ronchi, D.; Serretti, A. The Influence of AHI1 Variants on the Diagnosis and Treatment Outcome in Schizophrenia. Int. J. Mol. Sci. 2015, 16, 2517-2529.

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