title: Contribution of 5-HT2A receptor gene -1438A>G polymorphism to outcome of attention-deficit/hyperactivity disorder in adolescents.
abstract: Attention-deficit/hyperactivity disorder (ADHD) typically emerges before 7 years of age and may persist into adolescence or adulthood. The adolescent outcome can be classified into four types, including non-remission, syndromatic remission, symptomatic remission, and functional remission. Genetic factors are believed to contribute to symptom stability and change across development, so adolescent outcome may be a sub-phenotype for molecular genetic studies of ADHD. Serotonin system genes are prime candidates for this sub-phenotype, since the development of this neurotransmitter system parallels the course of ADHD. The current study examined the association between adolescent outcome in ADHD and serotonin system genes, including the -1438A>G polymorphism of the serotonin 2A receptor gene (HTR2A) and the -759C>T polymorphism of the serotonin 2C receptor gene (HTR2C). The -1438A>G polymorphism was found to be related to remission in ADHD, especially functional remission (P = 0.029). Due to potential phenotypic and etiologic heterogeneity in ADHD, the results of this study must be replicated in additional samples before they can be generalized to other populations.
authors.affiliation: Institute of Mental Health, Peking University (Peking University sixth hospital), Beijing, People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Chuanyuan
authors.initials: C
authors.lastname: Kang
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Wang
authors.forename: Rulun
authors.initials: R
authors.lastname: Zhou
authors.forename: Bing
authors.initials: B
authors.lastname: Wang
authors.forename: Lili
authors.initials: L
authors.lastname: Guan
authors.forename: Li
authors.initials: L
authors.lastname: Yang
authors.forename: Stephen V
authors.initials: SV
authors.lastname: Faraone
mesh_terms: D000293:Adolescent; D000483:Alleles; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis / Q000235:genetics*; D016009:Chi-Square Distribution; D002648:Child; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D010641:Phenotype; D020641:Polymorphism, Single Nucleotide; D011379:Prognosis; D044402:Receptor, Serotonin, 5-HT2A / Q000235:genetics*; D044405:Receptor, Serotonin, 5-HT2C / Q000235:genetics
chemical_list: D044402:Receptor, Serotonin, 5-HT2A; D044405:Receptor, Serotonin, 5-HT2C