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Effect of 5-HT_1A Receptor Gene Polymorphism on Negative and Depressive Symptom Response to Antipsychotic Treatment of Drug-Naive Psychotic Patients

OBJECTIVE: The serotonin 5-HT_1A receptor may modulate some of the negative, cognitive, and affective symptoms of schizophrenia and is a potential target of action of some antipsychotic drugs. A functional polymorphism in the promoter region of the 5-HT_1A receptor gene is associated with depression and suicidal behavior. The authors sought to determine whether this polymorphism influences symptom response to antipsychotic drug treatment. METHOD: Sixty-three drug-naive patients with first-episode psychosis who were genotyped for the –1019C/G polymorphism were recruited for this study and received standard care. The Positive and Negative Syndrome Scale and the Calgary Depression Scale were used to monitor symptom changes over 3 months. RESULTS: The polymorphism was associated with, and accounted for much of the variance in, changes in negative and depressive symptoms but not positive symptoms. CONCLUSIONS: These findings identify an important genetic factor predicting much of the response in negative and depressive symptoms to antipsychotic drug treatment.

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Am J Psychiatry 2006 163: A62. [Full Text] [PDF]

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				L. Wang, C. Fang, A. Zhang, J. Du, L. Yu, J. Ma, G. Feng, Q. Xing, and L. He The --1019 C/G polymorphism of the 5-HT1A receptor gene is associated with negative symptom response to risperidone treatment in schizophrenia patients J Psychopharmacol, November 1, 2008; 22(8): 904 - 909. [Abstract] [PDF]

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