Gender differences in the association between HTR2C gene variants and suicidal behavior in a Mexican population: a case-control study

• Published in: Neuropsychiatric disease and treatment Vol. 13; pp. 559 - 566
• Main Authors: Molina-Guzman, Gabriel, González-Castro, Thelma Beatriz, Hernández Díaz, Yazmín, Tovilla-Zárate, Carlos Alfonso, Juárez-Rojop, Isela E, Guzmán-Priego, Crystell Guadalupe, Genis, Alma, Pool García, Sherezada, López-Narvaez, María Lilia, Rodriguez-Perez, José Manuel
• Format: Journal Article
• Language: English
• Published: New Zealand Dove Medical Press Limited 01.01.2017; Taylor & Francis Ltd; Dove Medical Press
• Subjects: Analysis; Bioinformatics; Equilibrium; Gender; Gender differences; Genes; Genetic aspects; Genotype & phenotype; Haplotypes; HTR2C gene; Medical research; Mental disorders; Mexican population; Original Research; Polymorphism; Population; Psychiatry; Self destructive behavior; Serotonin; serotonin receptor; Sex differences (Biology); Studies; Suicidal behavior; suicide; Suicides & suicide attempts; Mexico; United States > US; serotonin receptor; HTR2C gene; Mexican population; polymorphism; suicide
• ISSN: 1176-6328; 1178-2021; 1178-2021
• DOI: 10.2147/NDT.S122024

The aim of this case-control study was to explore the association by gender between the gene variants and suicidal behavior in a Mexican population. A total of 183 suicide attempters and 208 healthy volunteers were included in this study. We genotyped five polymorphisms of HTR2C (rs547536, rs2192372, rs4272555, rs6318, and rs2428707), then measured the association by genotype, allele, and haplotype. In the female group, we found an association between two polymorphisms of the HTR2C (rs4272555 and rs2428707) and suicide attempts. The C allele of the single-nucleotide polymorphism (SNP) rs4272555 was associated with a decreased risk of suicide attempt ( =0.01, odds ratio =0.26, 95% confidence interval: 0.09-0.79), whereas the G allele of the SNP rs2428707 was associated with an increased risk of suicide attempt ( =0.01, odds ratio =3.68, 95% confidence interval: 1.24-10.90). No significant association was observed between the other polymorphisms studied (rs547536, rs2192372, rs6318) or haplotypes with suicide attempts. These findings suggest a possible risk factor of the gene in the pathology of suicidal behavior in Mexican population. More studies are necessary to confirm this association.