Evidence map›Paper›PMID 18562342›Full record

ArticleSchizophrenia bulletin2010

Catechol-O-methyltransferase Val 158 Met polymorphism and antisaccade eye movements in schizophrenia.

Haraldur Magnus Haraldsson, Ulrich Ettinger, Brynja B Magnusdottir, Thordur Sigmundsson, Engilbert Sigurdsson, Andres Ingason, Hannes Petursson

Abstract read
In one paragraph

Article in Schizophrenia bulletin, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
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  11. Neuregulin-1 genotypes and eye movements in schizophrenia.European archives of psychiatry and clinical neuroscience · 2010
    Article
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  13. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Haraldur Magnus HaraldssonDivision of Psychiatry, Landspitali University Hospital, Hringbraut, 101 Reykjavik, Iceland. hmagnus@landspitali.is
Ulrich Ettinger
Brynja B Magnusdottir
Thordur Sigmundsson
Engilbert Sigurdsson
Andres Ingason
Hannes Petursson

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The catechol-O-methyltransferase (COMT) enzyme catabolizes dopamine. The val(158)met single nucleotide polymorphism (rs4680) in the COMT gene has received considerable attention as a candidate gene for schizophrenia as well as for frontally mediated cognitive functions. Antisaccade performance is a good measure of frontal lobe integrity. Deficits on the task are considered a trait marker for schizophrenia. The aim of this study was to investigate the association of COMT val(158)met polymorphism with antisaccade eye movements in schizophrenia patients and healthy controls. Schizophrenia patients (N = 105) and healthy controls (N = 95) underwent infrared oculographic assessment of antisaccades. Subjects were genotyped for COMT val(158)met and divided into 3 groups according to genotype (val/val, val/met, and met/met). Patients displayed significantly more reflexive errors, longer and more variable latency, and lower amplitude gain than controls (all P < 0.02). A greater number of val(158) alleles was associated with shorter (P = 0.045) and less variable (P = 0.028) antisaccade latency and, nonsignificantly, with lower reflexive error rate (P = 0.056). None of these variables showed a group-by-genotype interaction (P > 0.1). There were no significant associations of genotype with measures of amplitude gain or spatial error (P > 0.2). The results suggest that COMT val(158) carrier status is associated with better performance on the antisaccade task. Possible explanations of this finding are discussed.

Indexed as

AllelesGenotypeAdolescentAdultAmino Acid SubstitutionCatechol O-MethyltransferaseDopamineFemaleFrontal LobeGene DosageGenetic Association StudiesGenetic Predisposition to DiseaseHumansIsoenzymesMaleMethionineCatechol O-MethyltransferaseDopamineIsoenzymesMethionineValine

Identifiers

PMID18562342
PMCPMC2800134

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.