Association of dopamine-related genetic loci to dopamine D3 receptor antagonist ABT-925 clinical response.
Transl Psychiatry
; 3: e245, 2013 Apr 09.
Article
en En
| MEDLINE
| ID: mdl-23571810
ABSTRACT
ABT-925, a selective dopamine D3 receptor (DRD3) antagonist, was tested in schizophrenia. A DRD3 gene polymorphism results in an S9G amino-acid change that has been associated with lower risk of schizophrenia, higher affinity for dopamine and some antipsychotics, and differential response to some antipsychotics. The effect of S9G genotype on response to ABT-925 was examined. DNA samples (N=117) were collected in a proof-of-concept, double-blind, randomized, placebo-controlled study of ABT-925 (50 or 150 mg QD) in acute exacerbation of schizophrenia. A pre-specified analysis assessed impact of genotype (SS versus SG+GG) on change from baseline to final evaluation for the Positive and Negative Syndrome Scale (PANSS) total score using analysis of covariance with genotype, treatment and genotype-by-treatment interaction as factors, and baseline score as covariate. Significant genotype-by-treatment interaction (P=0.015) was observed for change from baseline to final evaluation for the PANSS total score. Within subgroup analyses showed significant improvement from placebo in the SG+GG group treated with ABT-925 150 mg. More favorable clinical outcomes were observed in patients treated with ABT-925 150 mg who carried the DRD3 G allele than in those who carried the DRD3 SS genotype.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Piperazinas
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Pirimidinas
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Esquizofrenia
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Antipsicóticos
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Antagonistas de Dopamina
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Receptores de Dopamina D3
Tipo de estudio:
Clinical_trials
/
Risk_factors_studies
Límite:
Adolescent
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Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Transl Psychiatry
Año:
2013
Tipo del documento:
Article
País de afiliación:
Estados Unidos