OBJECTIVETo study the association between rs1079595 polymorphisms in the DRD2 gene and the distractibility in school-age children.

METHODSThe genotyping at rs1079595 was performed and the distractibility was measured based on the temperament questionnaire in 120 8-12 years old school-age children in order to analyze the effects of the rs1079595 polymorphism and its interaction with the gender, age and delivery mode on the distractibility.

RESULTSThere was an association between the distractibility and rs1079595 polymorphisms. The distractibility score in children with GG/GT genotypes was significantly higher than in children with the TT genotype (4.3 ± 0.6 vs 4.0 ± 0.7; P<0.05). The interaction between rs1079595 polymorphisms and the delivery mode produced an effect on the distractibility. The normal delivery children with T alleles were associated with a low distractibility (OR=0.037, P<0.01).

CONCLUSIONSThe distractibility based the temperament might be influenced by the rs1079595 polymorphism and its interaction with the delivery mode in school-age children.

Child ; Delivery, Obstetric ; Female ; Genotype ; Humans ; Logistic Models ; Male ; Polymorphism, Genetic ; Receptors, Dopamine D2 ; genetics ; Temperament