rs553668
This is a 3 prime utr variant variant in the ADRA2A gene.
▶ClinVar annotation
▶Research that mentions this SNP (5)
▶Converging Evidence for the Association of Functional Genetic Variation in the Serotonin Receptor 2a Gene With Prefrontal Function and Olanzapine TreatmentAssociationN=887Giuseppe Blasi et al.(2013)· JAMA Psychiatry
Association study of 55 SNPs in 887 Hungarian adults examining genetic predisposition to aggression measured by the Buss-Perry Aggression Questionnaire. The HTR2A rs7322347 intronic variant showed significant association with aggression after Bonferroni correction (p = 0.0007), with carriers of the minor A allele showing lower aggression levels. The DRD4 rs916455 variant also showed nominal significance (p = 0.0275) but did not survive multiple testing correction.
▶Variants of ADRA2A are associated with fasting glucose, blood pressure, body mass index and type 2 diabetes risk: meta-analysis of four prospective studiesMeta-analysisN=17,000Talmud PJ et al.(2011)· Diabetologia
Meta-analysis of four prospective UK cohort studies (>17,000 individuals) examining ADRA2A genetic variants and metabolic traits. rs553668 G>A was associated with increased type 2 diabetes risk (OR 1.17, 95% CI 1.04-1.31, p=0.01) and higher fasting glucose (0.03 mmol/l per allele, p=0.016). Secondary ADRA2A SNPs showed associations with blood pressure, BMI, and glucose-related phenotypes. Haplotype analysis identified a rare rs553668A/rs10885122T haplotype strongly associated with elevated fasting glucose.
▶Influence of neurexin 1 (NRXN1) polymorphisms in clozapine responseReviewRenan P. Souza et al.(2010)· Human Psychopharmacology: Clinical and Experimental
This systematic review of 98 studies examined biological predictors of clozapine response in treatment-resistant schizophrenia patients. Of 379 different gene variants investigated across 70 genetic studies, only three variants (DRD3 Ser9Gly rs6280, HTR2A His452Tyr, and GNB3 C825T) achieved independent replication. Non-genetic predictors included higher prefrontal cortical volumes and lower HVA:5-HIAA ratio in cerebrospinal fluid.
▶Lack of association of GPX1 and MnSOD genes with symptom severity and response to clozapine treatment in schizophrenia subjectsReviewRenan P. Souza et al.(2009)· Human Psychopharmacology: Clinical and Experimental
A systematic review of 98 studies investigating biological predictors of clozapine response in treatment-resistant schizophrenia. Of 70 genetic studies examining 379 variants, only three genetic variants have independently replicated findings: DRD3 Ser9Gly (rs6280), HTR2A His452Tyr, and GNB3 C825T (rs5442/rs5443). Non-genetic predictors include higher prefrontal cortical structural integrity and activity, and lower HVA:5-HIAA ratio in cerebrospinal fluid.
▶Candidate gene studies of ADHD: a meta-analytic reviewMeta-analysisIan R. Gizer et al.(2009)· Human Genetics
Meta-analytic review of candidate gene studies for childhood ADHD examining 19 genes. Significant associations identified for DAT1 (3' UTR VNTR: OR=1.12, p=0.028; rs27072: OR=1.20, p=0.006), DRD4 (exon 3 VNTR: OR=1.33, p=0.00007; rs1800955: OR=1.21, p=0.007), DRD5, 5HTT, HTR1B (rs6296: OR=1.11, p=0.010), and SNAP25 (rs3746544: OR=1.15, p=0.030).
About ADRA2A
Alpha-2-adrenergic receptors are members of the G protein-coupled receptor superfamily. The alpha-2-adrenergic receptors are a type of adrenergic receptors (for adrenaline or epinephrine), which inhibit adenylate cyclase. These receptors include 3 highly homologous subtypes: alpha2A, alpha2B, and alpha2C. They are involved in regulating the release of neurotransmitter molecules from sympathetic nerves and from adrenergic neurons in the central nervous system. The sympathetic nervous system regulates cardiovascular function by activating adrenergic receptors in the heart, blood vessels and kidney. Studies in mouse revealed that both the alpha2A and alpha2C receptor subtypes were required for presynaptic transmitter release from the sympathetic nervous system in the heart and from central noradrenergic neurons. The alpha-2-adrenergic receptors are also involved in catecholamine signaling by extracellular regulated protein kinase 1 and 2 (ERK1/2) pathways. A clear association between the alpha-2-adrenergic receptor and disease has not been yet established. [provided by RefSeq, Sep 2019]
View all ADRA2A variants →Gene information from NCBI Gene. Variant classifications from ClinVar.
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