title: Replication of a ROBO2 polymorphism associated with conduct problems but not psychopathic tendencies in children.
abstract: The co-occurrence of conduct problems (CPs) and high callous-unemotional (CU) traits specifies risk for adult psychopathy and is under a high genetic influence. A previous genome-wide pooled DNA study of 7-year olds identified a set of candidate single-nucleotide polymorphisms (SNPs) that might differentiate high CP+CU children from healthy children. We attempted to replicate an identified subset of these SNP-psychopathy associations. In a case-control design, 210 clinically referred children were partitioned into Comparison, High CP+Low CU, and High CP+CU groups and genotyped. One SNP, rs13064369, differentiated the groups but was associated with high CP, regardless of the level of CU traits, that is, the rare and heterozygote variants CC and CT were significantly more frequent in both CP groups compared with Comparisons but did not differ from each other. We replicated the finding that a polymorphism associated with the ROBO2 gene, which is involved in neurodevelopment, confers risk for the common emotionally reactive, impulsive aspects of conduct disorder, independent of concurrent risk for psychopathy.
authors: aSchool of Psychology, University of New South Wales bSchool of Psychology, University of Sydney cChild and Adolescent Psychiatry, Sydney Children's Hospital, Sydney, New South Wales, Australia.
authors: Mark R
authors: MR
authors: Dadds
authors: Caroline
authors: C
authors: Moul
authors: Avril
authors: A
authors: Cauchi
authors: David J
authors: DJ
authors: Hawes
authors: John
authors: J
authors: Brennan
mesh_terms: D000293:Adolescent; D000328:Adult; D000987:Antisocial Personality Disorder / Q000235:genetics*; D002648:Child; D002675:Child, Preschool; D019955:Conduct Disorder / Q000235:genetics*; D003710:Demography; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D011971:Receptors, Immunologic / Q000235:genetics*; D015203:Reproducibility of Results; D000097905:Roundabout Proteins
chemical_list: D011971:Receptors, Immunologic; C498890:ROBO2 protein, human; D000097905:Roundabout Proteins