Evidence map›Paper›PMID 25931179›Full record

ArticleThe Journal of head trauma rehabilitation

Posttraumatic Brain Injury Cognitive Performance Is Moderated by Variation Within ANKK1 and DRD2 Genes.

Michelle D Failla, John M Myrga, Joseph H Ricker, C Edward Dixon, Yvette P Conley, Amy K Wagner

Abstract read
In one paragraph

Article in The Journal of head trauma rehabilitation. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 4 pooled it
5.2field-weighted citation impact, top 4% of its field
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

28 citing papers in PubMed, 4 syntheses or guidelines pooled it, 49 citations in OpenAlex.

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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

6 authors at 1 institution in 1 country.

Michelle D FaillaCenter for Neuroscience (Drs Failla, Dixon, and Wagner), Department of Physical Medicine and Rehabilitation, School of Medicine (Drs Failla, Dixon, and Wagner and Mr Myrga), and Department of Neurological Surgery, School of Medicine (Dr Dixon), Department of Human Genetics, School of Public Health (Dr Conley), Department of Health Promotion & Development, School of Nursing (Dr Conley), and Safar Center for Resuscitation Research (Drs Wagner and Dixon), University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rehabilitation Medicine, New York University, School of Medicine, New York (Dr Ricker); and Pittsburgh VA Healthcare System, Pittsburgh, Pennsylvania (Dr Dixon).
John M Myrga
Joseph H Ricker
C Edward Dixon
Yvette P Conley
Amy K Wagner
Willmott Dixon (United Kingdom) · GB

Funding

University of Pittsburgh Clinical and Translational Science InstituteUL1TR000005 · NCATS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2012 to 2015
$50.8M
Dopamine Genetic Variants Modulating Recovery After TBIR01HD048162 · NICHD · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WAGNER, AMY K · 2004 to 2008
$1.8M
Genomic Variability and Symptomatology After Traumatic Brain InjuryR01NR013342 · NINR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CONLEY, YVETTE P · 2011 to 2013
$1.2M
NCATS NIH HHS UL1TR000005NICHD NIH HHS R01 HD048162NINR NIH HHS R01 NR013342NINR NIH HHS R01NR013342PHS HHS H133A120087
6 · The paper itself

Abstract

objectiveAs dopamine neurotransmission impacts cognition, we hypothesized that variants in the linked dopamine D2 receptor (DRD2) and ankyrin repeat and kinase domain (ANKK1) genes might account for some individual variability in cognitive recovery following traumatic brain injury (TBI).

participantsProspective cohort of 108 survivors of severe TBI, recruited consecutively from a level 1 trauma center.

designWe examined relationships between DRD2 genetic variation and functional recovery at 6 and 12 months post-TBI. MAIN MEASURES: Cognitive performance was evaluated using 8 neuropsychological tests targeting different cognitive domains. An overall cognitive composite was developed using normative data. We also assessed functional cognition, depression status, and global outcome. Subjects were genotyped for 6 DRD2 tagging single-nucleotide polymorphisms and Taq1A within ANKK1.

resultsANKK1 Taq1A heterozygotes performed better than homozygotes across several cognitive domains at both time points postinjury. When adjusting for age, Glasgow Coma Scale score, and education, the Taq1A (ANKK1) and rs6279 (DRD2) variants were associated with overall composite scores at 6 months post-TBI (P = .0453 and P = .0452, respectively). At 12 months, only Taq1A remained a significant genetic predictor of cognition (P = .0128). Following multiple-comparisons correction, there were no significant associations between examined genetic variants and functional cognition, depression status, and global outcome.

conclusionThese data suggest that genetic variation within DRD2 influences cognitive recovery post-TBI. Understanding genetic influences on dopaminergic systems post-TBI may impact current treatment paradigms.

Indexed as

Genetic VariationAdolescentAdultBrain InjuriesCognition DisordersCohort StudiesFemaleGene Expression RegulationGenotypeGlasgow Coma ScaleHumansMalePolymorphism, Single NucleotideProspective StudiesProtein Serine-Threonine KinasesReceptors, Dopamine D2ANKK1 protein, humanDRD2 protein, humanProtein Serine-Threonine KinasesReceptors, Dopamine D2

Identifiers

PMID25931179
PMCPMC4626432
OpenAlexW2057917485

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.