Evidence map›Paper›PMID 30521018›Full record

ArticleArchives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists2019

APOE-ε4 Genotype is Associated with Elevated Post-Concussion Symptoms in Military Veterans with a Remote History of Mild Traumatic Brain Injury.

Victoria C Merritt, Kristina M Lapira, Alexandra L Clark, Scott F Sorg, Madeleine L Werhane, Amy J Jak, Mark W Bondi, Dawn M Schiehser, Lisa Delano-Wood

Abstract read
In one paragraph

Article in Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. The physiological effects of APOE genotype in healthy young/middle-aged individuals.Biological reviews of the Cambridge Philosophical Society · 2026
    Article
  3. Article
  4. Article
  5. APOE in the normal brain.Neurobiology of disease · 2020
    Review
  6. Article
  7. 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

9 authors.

Victoria C MerrittVA San Diego Healthcare System (VASDHS); San Diego, CA, USA.
Kristina M LapiraUniversity of California San Diego (UCSD); La Jolla, CA, USA.
Alexandra L ClarkVA San Diego Healthcare System (VASDHS); San Diego, CA, USA.
Scott F SorgVA San Diego Healthcare System (VASDHS); San Diego, CA, USA.
Madeleine L WerhaneVA San Diego Healthcare System (VASDHS); San Diego, CA, USA.
Amy J JakVA San Diego Healthcare System (VASDHS); San Diego, CA, USA.
Mark W BondiVA San Diego Healthcare System (VASDHS); San Diego, CA, USA.
Dawn M SchiehserVA San Diego Healthcare System (VASDHS); San Diego, CA, USA.
Lisa Delano-WoodVA San Diego Healthcare System (VASDHS); San Diego, CA, USA.

Funding

Neuroimaging and Risk Factor Correlates in Aging and MCIK24AG026431 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI BONDI, MARK W · 2007 to 2016
$1.7M
CSRD VA IK2 CX001508NIA NIH HHS K24 AG026431
6 · The paper itself

Abstract

objectiveWe evaluated the influence of the APOE-ε4 allele on post-concussive symptoms in military Veterans with a remote history of mild traumatic brain injury (mTBI).

methodParticipants (N = 77) were administered neuropsychiatric measures, on average, approximately 5 years following their most recent mTBI and provided a DNA sample for APOE genotyping. Veterans were divided into two groups based on their ε4 status (n = 14 ε4+, n = 63 ε4-). The Neurobehavioral Symptom Inventory (NSI) was the primary outcome measure, from which a total score was derived, as well as three symptom clusters (somatic, cognitive, and affective).

resultsANCOVAs showed a significant main effect of ε4 genotype on the NSI total score and somatic symptom cluster after adjusting for posttraumatic stress symptoms and mTBI history (p = .019-.028, ηp2 = .064-.073), such that ε4+ Veterans endorsed significantly greater symptoms than ε4- Veterans.

conclusionsOur findings suggest that genetic risk may help to explain the poorer long-term outcomes often observed in this population.

Indexed as

AdultApolipoproteins EBrain ConcussionFemaleGenotypeHumansMaleMilitary PersonnelNeuropsychological TestsPost-Concussion SyndromeSeverity of Illness IndexStress Disorders, Post-TraumaticVeteransYoung AdultApolipoproteins EAPOE geneGeneticsHead injuryMilitary VeteransmTBINeurobehavioral Symptom InventoryPost-concussion symptoms

Identifiers

PMID30521018
PMCPMC6659168

What OpenQuestion holds

Textmetadata
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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.