Molecular genetic case-control women investigation from the first Brazilian high-risk study on functional psychosis.
OBJECTIVE
Data from epidemiological studies have demonstrated that genetics is an important risk factor for psychosis. The present study is part of a larger project, pioneer in Brazil, which has been conducted by other researchers who intend to follow a high-risk population (children) for the development of schizophrenia and bipolar disorder. In this first phase of the project, the objective was to investigate the distribution of four candidate genetic polymorphisms for functional psychosis (Ser9Gly DRD3, 5HTTLPR, the VNTR 3'-UTR SLC6A3 and Val66Met BDNF) in a case-control sample.


METHODS
A total of 105 women (58 with schizophrenia and 47 with bipolar disorder) and 62 gender-matched controls were investigated.


RESULTS
Allele and genotype distributions of all identified functional polymorphisms did not differ statistically between cases and controls.


CONCLUSIONS
These results suggest that the investigated polymorphisms were not related to susceptibility to functional psychoses in our Brazilian sample. These findings need to be validated in larger and independent studies.
Krelling
Renata
R
Genetics and Pharmacogenetics Programme, Institute and Department of Psychiatry, Medical School, Universidade de São Paulo, São Paulo, SP, Brazil. krelling@usp.br
Cordeiro
Quirino
Q
Miracca
Elisabete
E
Gutt
Elisa Kijner
EK
Petresco
Sandra
S
Moreno
Ricardo Alberto
RA
Vallada
Homero
H
D000328:Adult; D001714:Bipolar Disorder / Q000235:genetics*; D001938:Brazil; D016022:Case-Control Studies; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D011110:Polymorphism, Genetic / Q000235:genetics*; D012559:Schizophrenia / Q000235:genetics*