Evidence map›Paper›PMID 19766540›Full record

ArticleEpilepsy & behavior : E&B2009

Haptoglobin phenotype and apolipoprotein E polymorphism: relationship to posttraumatic seizures and neuropsychological functioning after traumatic brain injury.

Gail D Anderson, Nancy R Temkin, Sureyya S Dikmen, Ramon Diaz-Arrastia, Joan E Machamer, Carol Farhrenbruch, John W Miller, S M Hossein Sadrzadeh

Abstract read
In one paragraph

Article in Epilepsy & behavior : E&B, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

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

  1. Pooled it
  2. Trial
  3. The physiological effects of APOE genotype in healthy young/middle-aged individuals.Biological reviews of the Cambridge Philosophical Society · 2026
    Article
  4. Article
  5. Review
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  7. Article
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  9. Review
  10. Brain and behavior · 2017
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Epilepsy related to traumatic brain injury.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2014
    Review
  17. Article
  18. Review
  19. Article
  20. Article
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

8 authors.

Gail D AndersonDepartment of Pharmacy, University of Washington, Box 357630, Seattle, WA 98195, USA. gaila@u.washington.edu
Nancy R Temkin
Sureyya S Dikmen
Ramon Diaz-Arrastia
Joan E Machamer
Carol Farhrenbruch
John W Miller
S M Hossein Sadrzadeh

Funding

VALPROATE FOR PROPHYLAXIS OF POSTTRAUMATIC SEIZURESR01NS019643 · NINDS · UNIVERSITY OF WASHINGTON · PI TEMKIN, NANCY R · 1985 to 2004
$4.1M
NINDS NIH HHS R01 NS019643NINDS NIH HHS R01NS19643
6 · The paper itself

Abstract

The relationship of genetic predisposition to reduced iron capacity and apolipoprotein E (APOE) to posttraumatic seizures (PTSs) and neuropsychological outcomes was investigated in patients with traumatic brain injuries from a prior valproate clinical study. Haptoglobin concentration/phenotype and APOE genotype were determined in 25 patients with PTSs and 26 control (no PTSs) subjects approximately 10 years after traumatic brain injury. Haptoglobin phenotype was also determined in previously collected frozen samples for 25 additional patients with PTSs and 32 no-PTS subjects. There was no relationship between haptoglobin phenotype or APOE genotype and occurrence of PTSs. APOE genotype was not related to neuropsychological outcome; however, when adjustments were made for differences in educational levels, APOE epsilon4 subjects did worse, especially on tests of verbal intellectual and verbal memory skills. In contrast to our hypothesis, those with haptoglobin 1-1 (high-affinity binder of hemoglobin) scored somewhat worse on Verbal IQ and Tapping D at 1 and 12 months after injury.

Indexed as

Brain InjuriesCognition DisordersSeizuresAdultApolipoproteins EChi-Square DistributionFemaleHaptoglobinsHumansMaleMiddle AgedNeuropsychological TestsPhenotypePolymorphism, GeneticRetrospective StudiesStatistics, NonparametricApolipoproteins EHaptoglobins

Identifiers

PMID19766540
PMCPMC2783358

What OpenQuestion holds

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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.