Male specific association between the 5-HTR6 gene 267C/T SNP and suicide in the Portuguese population.
Serotonergic system dysfunction has been implicated in the etiology of suicide. A large number of genetic studies have focused on the potential involvement of genes coding for components of serotonergic system in suicidal behavior. However, other genes belonging to this system remain to be investigated or have been poorly studied, as is the case of the 5-HT6 receptor (5-HTR6) gene. In this study, we investigated the potential association between the 5-HTR6 gene 267C/T SNP and suicide in a Portuguese population. Blood samples were collected from 179 suicide victims and 189 controls. Genotypes for the 5-HTR6 gene 267C/T SNP were obtained with the restriction enzyme Rsa I. A tendency was found for genotype association between this polymorphism and suicide, but the differences were not statistically significant (chi(2)=5.374, df=2, p=0.068). However, a gender-specific association was detected when comparing the genotype distribution between male suicide victims and male controls (chi(2)=6.988, df=2, p=0.030), suggesting that this SNP might have a role in the etiology of suicide in male subjects in the Portuguese population.
Azenha
Diana
D
Clinical and Molecular Genetics Unit, National Institute of Legal Medicine, Coimbra, Portugal.
Alves
Mariana
M
Matos
Rita
R
Santa
Jerónimo Fonte
JF
Silva
Beatriz
B
Cordeiro
Cristina
C
Vieira
Duarte Nuno
DN
Ambrósio
Alda M
AM
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D011174:Portugal; D011985:Receptors, Serotonin / Q000235:genetics*; D012737:Sex Factors; D013405:Suicide; D055815:Young Adult
D011985:Receptors, Serotonin; C097216:serotonin 6 receptor