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  • Title: Controlled clinical comparison of paroxetine and fluvoxamine considering the serotonin transporter promoter polymorphism.
    Author: Kato M, Ikenaga Y, Wakeno M, Okugawa G, Nobuhara K, Fukuda T, Fukuda K, Azuma J, Kinoshita T.
    Journal: Int Clin Psychopharmacol; 2005 May; 20(3):151-6. PubMed ID: 15812265.
    Abstract:
    The present study aimed to compare the effects of two currently used selective serotonin reuptake inhibitors (SSRIs) in Japan taking the individual background in 5-HTT gene-linked polymorphic region (5HTTLPR) genotype into account. Clinical responses to paroxetine and fluvoxamine were evaluated by total and cluster depressive symptoms for 81 Japanese patients who were diagnosed with major depression. Patients with the l allele had a greater percentage reduction on the total score (P=0.059) and somatic anxiety items (P=0.026) of the 21-item Hamilton Depression Rating Scale (HAM-D) score compared to s/s genotype carriers. Paroxetine was significantly more effective than fluvoxamine in the s/s carriers, as evaluated on the percentage reduction in total score (P=0.012) and core (P=0.049) HAM-D after 4 weeks of medication, but not in the l/s carriers. These findings suggest that the genetic test may be useful in investigating the efficacy of the two SSRIs, and that normalization by the 5HTTLPR genotypes may lead to improvement of the precision of comparative analysis.
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