{"title":"Influence of Organic Cation Transporter 3 (SLC22A3) Genetic Polymorphisms on Antidepressant Maintenance Doses in Japanese Patients with Depression.","authors":"Kazuyuki Inoue, Kakeru Nagaoka, Natsuko Ando, Yasuhiro Hakamata, Kunihiko Itoh","doi":"10.1159/000548094","DOIUrl":null,"url":null,"abstract":"<p><strong>Introduction: </strong>Interindividual variations in antidepressant dosages required to achieve and maintain a therapeutic response are common. To mitigate the risk of recurrence, it is recommended that patients maintain treatment at a dose that effectively alleviates their acute depressive symptoms for at least 6 months. This study investigated the relationship between the antidepressant doses used for maintenance therapy and genetic polymorphisms that affect serotonin transporter activity.</p><p><strong>Methods: </strong>Eighty-four Japanese patients with depression were enrolled in the study. For each patient, the doses of antidepressant and anxiolytic/hypnotic medications were quantified as equivalents of imipramine and diazepam, respectively, based on the most recent prescription. Patients were divided into high- and low-dose antidepressant treatment groups, using the median dose as the between-group cutoff. We examined the influence of genetic polymorphisms on inclusion in the high- and low-dose groups.</p><p><strong>Results: </strong>Multivariate logistic regression analysis revealed that the presence of the G allele in the SLC22A3 rs2292334 polymorphism was associated with an increased antidepressant maintenance dose. The odds ratio for an increased presence in the G allele of the SLC22A3 rs2292334 polymorphism was 8.867 (95% confidence interval, 1.869-42.069).</p><p><strong>Conclusion: </strong>These findings have potential use in informing future dosing strategies in depression therapy.</p>","PeriodicalId":19239,"journal":{"name":"Neuropsychobiology","volume":" ","pages":"1-8"},"PeriodicalIF":3.1000,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Neuropsychobiology","FirstCategoryId":"102","ListUrlMain":"https://doi.org/10.1159/000548094","RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"NEUROSCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Introduction: Interindividual variations in antidepressant dosages required to achieve and maintain a therapeutic response are common. To mitigate the risk of recurrence, it is recommended that patients maintain treatment at a dose that effectively alleviates their acute depressive symptoms for at least 6 months. This study investigated the relationship between the antidepressant doses used for maintenance therapy and genetic polymorphisms that affect serotonin transporter activity.
Methods: Eighty-four Japanese patients with depression were enrolled in the study. For each patient, the doses of antidepressant and anxiolytic/hypnotic medications were quantified as equivalents of imipramine and diazepam, respectively, based on the most recent prescription. Patients were divided into high- and low-dose antidepressant treatment groups, using the median dose as the between-group cutoff. We examined the influence of genetic polymorphisms on inclusion in the high- and low-dose groups.
Results: Multivariate logistic regression analysis revealed that the presence of the G allele in the SLC22A3 rs2292334 polymorphism was associated with an increased antidepressant maintenance dose. The odds ratio for an increased presence in the G allele of the SLC22A3 rs2292334 polymorphism was 8.867 (95% confidence interval, 1.869-42.069).
Conclusion: These findings have potential use in informing future dosing strategies in depression therapy.
期刊介绍:
The biological approach to mental disorders continues to yield innovative findings of clinical importance, particularly if methodologies are combined. This journal collects high quality empirical studies from various experimental and clinical approaches in the fields of Biological Psychiatry, Biological Psychology and Neuropsychology. It features original, clinical and basic research in the fields of neurophysiology and functional imaging, neuropharmacology and neurochemistry, neuroendocrinology and neuroimmunology, genetics and their relationships with normal psychology and psychopathology. In addition, the reader will find studies on animal models of mental disorders and therapeutic interventions, and pharmacoelectroencephalographic studies. Regular reviews report new methodologic approaches, and selected case reports provide hints for future research. ''Neuropsychobiology'' is a complete record of strategies and methodologies employed to study the biological basis of mental functions including their interactions with psychological and social factors.