Variant Gene Risk Allele Score vda Association Type Original DB Sentence supporting the association PMID PMID Year
dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE Val158Met has been found to predict performance on dopamine-mediated prefrontal tasks in healthy adults and patients with schizophrenia. 17924258

2008

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A common functional polymorphism (rs4680, Val158Met) has been extensively tested for an association with schizophrenia, but with conflicting results. 17482701

2007

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A common Val->Met polymorphism (rs4680) in the COMT gene, associated with increased prefrontal dopamine catabolism, impairs prefrontal cognition and might increase risk for schizophrenia. 21999147

2011

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A different genomic region composed of three SNPs (rs737865, rs4680, rs165599) within the COMT gene has been reported to be significantly associated with schizophrenia in Ashkenazi Jews. 19369177

2009

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A functional interaction between Catechol-O-Methyltransferase (COMT) Val158Met and methylenetetrahydrofolate reductase (MTHFR) C677T has been shown to differentially affect cognition in patients with schizophrenia and healthy controls; the effect of COMT Val158Met × MTHFR interaction on resilience to stress in patients and controls remains to be examined. 22128864

2012

dbSNP: rs749437638
rs749437638
0.050 GeneticVariation BEFREE A functional interaction between Catechol-O-Methyltransferase (COMT) Val158Met and methylenetetrahydrofolate reductase (MTHFR) C677T has been shown to differentially affect cognition in patients with schizophrenia and healthy controls; the effect of COMT Val158Met × MTHFR interaction on resilience to stress in patients and controls remains to be examined. 22128864

2012

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A functional polymorphism (Val-158-Met) at the Catechol-O-methyltransferase (COMT) locus has been identified as a potential etiological factor in schizophrenia. 16921496

2006

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A functional polymorphism of the catechol-O-methyltransferase (COMT) gene (Val158Met) partially appears to influence cognitive performance in schizophrenia subjects and healthy controls by modulating prefrontal dopaminergic activity. 26255563

2015

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A meta-analysis of the Val158Met COMT polymorphism and violent behavior in schizophrenia. 22905266

2012

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A preliminary study suggested that the COMTVal108/158Met genotype (rs4680) is related to cognitive function in schizophrenia. 30326466

2019

dbSNP: rs165599
rs165599
0.100 GeneticVariation BEFREE A recent study found, in a large sample of Ashkenazi Jews, a highly significant association between schizophrenia and a particular haplotype of three polymorphic sites in the catechol-O-methyl transferase, COMT, gene: an IVS 1 SNP (dbSNP rs737865), the exon 4 functional SNP (Val158Met, dbSNP rs165688), and a downstream SNP (dbSNP rs165599). 15098000

2004

dbSNP: rs165688
rs165688
0.010 GeneticVariation BEFREE A recent study found, in a large sample of Ashkenazi Jews, a highly significant association between schizophrenia and a particular haplotype of three polymorphic sites in the catechol-O-methyl transferase, COMT, gene: an IVS 1 SNP (dbSNP rs737865), the exon 4 functional SNP (Val158Met, dbSNP rs165688), and a downstream SNP (dbSNP rs165599). 15098000

2004

dbSNP: rs749437638
rs749437638
0.050 GeneticVariation BEFREE A second polymorphism, methylenetetrahydrofolate reductase (MTHFR) 677C --> T (rs1801133), has been associated with overall schizophrenia risk and executive function impairment in patients, and may influence dopamine signaling through mechanisms upstream of COMT effects. 18988738

2008

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A significant association was observed between schizophrenia, but not other related disorders, and genotypes GG (Val/Val) for rs4680 and TT for rs4633. 17363961

2007

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A single-nucleotide polymorphism of the gene coding for catechol-O-methyltransferase (COMT Val(158)Met) is associated with prefrontal-dependent task performance in schizophrenia. 16691129

2006

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE A valine/methionine polymorphism of the catechol O-methyltransferase gene at amino acid 158 (COMT Val158Met polymorphism) has been identified as a risk factor for cognitive impairment in schizophrenia. 16542182

2006

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE Accumulating evidence indicates that genetic polymorphisms of D-amino acid oxidase activator (DAOA) (M24; rs1421292; T-allele) and catechol-O-methyltransferase (COMT) (Val¹⁵⁸Met; rs4680) likely enhance susceptibility to schizophrenia. 21215384

2011

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE Aggression behavior in patients with schizophrenia can be indicated by positive BOLD-fMRI values in the lower CNS and negative values in the high-level CNS and by a recessive gene model in <i>COMT</i> polymorphism rs4680. 28223811

2017

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE Aggression is associated with the 'low' activity allele (Met) of the functional Val158Met polymorphism among people with schizophrenia spectrum disorders relative to the 'high' activity (Val) allele. 18075475

2007

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE Although the etiology of aggression is multifactorial, many studies have associated the Val158Met polymorphism of the COMT with aggression in schizophrenia. 21402125

2011

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE As impaired serotonergic and dopaminergic neurotransmission is implicated in the pathogenesis of depression and schizophrenia this study sought to investigate the putative association between several functional gene polymorphisms (SERT 5-HTTLPR, MAO-A VNTR, COMT Val158Met and DAT VNTR) and schizophrenia. 28416295

2017

dbSNP: rs6267
rs6267
0.040 GeneticVariation BEFREE Association of Ala72Ser polymorphism with COMT enzyme activity and the risk of schizophrenia in Koreans. 15645182

2005

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE Association study of COMT gene Val158Met polymorphism with auditory P300 and performance on neurocognitive tests in patients with schizophrenia and their relatives. 17071544

2006

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE Associations between COMT Val(158)Met genotype and RTV do not appear to reflect transmission of schizophrenia liability in families. 16815691

2006

dbSNP: rs4680
rs4680
0.100 GeneticVariation BEFREE Assuming that the published associations found between the exon 4 Val158Met SNP and schizophrenia are due to linkage disequilibrium, these new haplotype data support the hypothesis of a relevant cis variant linked to the rs737865 site, possibly just upstream in the P2 promoter driving transcription of the predominant form of COMT in the brain. 15098000

2004