Please cite this article as follows: Kato M, Fukuda T, Wakeno M, Okugawa G, Takekita Y, Watanabe S, Yamashita M, Hosoi Y, Azuma J, Kinoshita T, Serretti A. 2008. Effect of 5-HT1A Gene Polymorphisms on Antidepressant Response in Major Depressive Disorder. Am J Med Genet Part B 150B:115–123.
Effect of 5-HT1A gene polymorphisms on antidepressant response in major depressive disorder†
Article first published online: 15 MAY 2008
Copyright © 2008 Wiley-Liss, Inc.
American Journal of Medical Genetics Part B: Neuropsychiatric Genetics
Volume 150B, Issue 1, pages 115–123, 5 January 2009
How to Cite
Kato, M., Fukuda, T., Wakeno, M., Okugawa, G., Takekita, Y., Watanabe, S., Yamashita, M., Hosoi, Y., Azuma, J., Kinoshita, T. and Serretti, A. (2009), Effect of 5-HT1A gene polymorphisms on antidepressant response in major depressive disorder. Am. J. Med. Genet., 150B: 115–123. doi: 10.1002/ajmg.b.30783
- Issue published online: 21 JAN 2009
- Article first published online: 15 MAY 2008
- Manuscript Accepted: 8 APR 2008
- Manuscript Received: 9 NOV 2007
- Glaxo SmithKline
- Meiji Seika Kaisha Ltd.
- Asahi Kasei Pharma Corporation
- Labour and Health Sciences Research Grants
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- The Nakatomi Foundation
- Japanese Research Foundation for Clinical Pharmacology
- Japanese Society of Clinical Pharmacology and Therapeutics
- Fondazione del Monte di Bologna e Ravenna
- serotonin 1A receptor;
- treatment response
Variability in antidepressant response is due to genetic and environmental factors. Among genetic factors, the ones controlling for availability of the drug at the target site are interesting candidates. Rs6295C/G SNP in the 5-HT1A gene (HTR1A) has been found to affect the expression and function of HTR1A. In fact rs6295C/G is in strong linkage disequilibrium with other polymorphisms of HTR1A suggesting that those functional effects could be associated with polymorphisms other than or together with the synonymous rs6295C/G. In the present study we examined the possible association of a panel of markers in strong linkage disequilibrium of the HTR1A with SSRI/SNRI response in 137 Japanese major depression subjects followed for 6 weeks. We observed a significant association of better response to antidepressant in rs10042486C/C (P < 0.0001), rs6295G/G (P < 0.0001) and rs1364043T/T (P = 0.018) genotype carriers (minor allele homozygotes), independently from clinical variables. Furthermore minor allele homozygous carriers in all these three SNPs were associated with treatment response by various assessment such as HAM-D score change over time (P = 0.001), week 2 (P < 0.0001), 4 (P = 0.007), and 6 (P = 0.048) as well as response rate (P = 0.0005) and remission rate (P = 0.004). We also pointed out the genotyping mis-definition of rs6295C/G in the previous four articles. In conclusion, this is the first study that reports a significant association of antidepressant response with rs10042486C/T and rs1364043T/G variants of HTR1A and also with rs10042486–rs6295–rs1364043 combination. This finding adds an important information for the pathway of detecting the genetics of antidepressant response even if results must be verified on larger samples. © 2008 Wiley-Liss, Inc.