Evidence map›Paper›PMID 18408230›Full record

ReviewSchizophrenia bulletin2008

Structural cerebral variations as useful endophenotypes in schizophrenia: do they help construct "extended endophenotypes"?

Konasale M Prasad, Matcheri S Keshavan

Open access · bronzeAbstract readReview
In one paragraph

Review in Schizophrenia bulletin, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 2 pooled it
4.9field-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

38 citing papers in PubMed, 2 syntheses or guidelines pooled it, 85 citations in OpenAlex.

  1. Pooled it
  2. Reduced hippocampal volumes in healthy carriers of brain-derived neurotrophic factor Val66Met polymorphism: meta-analysis.The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry · 2012
    Pooled it
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Aberrant transcriptomes and DNA methylomes define pathways that drive pathogenesis and loss of brain laterality/asymmetry in schizophrenia and bipolar disorder.American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics · 2019
    Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Neuroimaging Biomarkers for Psychosis.Current behavioral neuroscience reports · 2015
    Article
  17. Article
  18. Article
  19. Boundaries of the psychosis phenotype.Schizophrenia bulletin · 2012
    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

2 authors at 1 institution in 1 country.

Konasale M PrasadWestern Psychiatric Institute and Clinic, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
Matcheri S Keshavan
University of Pittsburgh · US

Funding

University of Pittsburgh Clinical and Translational Science InstituteUL1TR000005 · NCATS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2012 to 2015
$50.8M
THE ROLE OF PREFRONTAL CORTEX IN THE COGNITIVE DYSFUNCTIONS OF SCHIZOPHRENIAP50MH045156 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BARRIONUEVO, GERMAN · 1990 to 2007
$17.9M
Brain Maturation and Vulnerability to SchizophreniaR01MH064023 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KESHAVAN, MATCHERI S. · 2003 to 2008
$3.0M
RGS4 Polymorphisms and Neurobiology of SchizophreniaK23MH072995 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI PRASAD, KONASALE M · 2005 to 2009
$877k
CORTICAL PRUNING AND SCHIZOPHRENIAK02MH001180 · NIMH · WAYNE STATE UNIVERSITY · PI KESHAVAN, MATCHERI S. · 1995 to 2005
$648k
NCATS NIH HHS UL1 TR000005NIMH NIH HHS K23 MH072995NIMH NIH HHS MH01180NIMH NIH HHS MH45156NIMH NIH HHS MH64023NIMH NIH HHS MH72995
6 · The paper itself

Abstract

Endophenotypes represent intermediate phenotypes on the putative causal pathway from the genotype to the phenotype. They offer a potentially valuable strategy to examine the molecular etiopathology of complex behavioral phenotypes such as schizophrenia. Neurocognitive and neurophysiological impairments that suggest functional impairments associated with schizophrenia have been proposed as endophenotypes. However, few studies have examined the structural variations in the brain that might underlie the functional impairments as useful endophenotypes for schizophrenia. Over the past three decades, there has been an impressive body of literature supporting brain structural alterations in schizophrenia. We critically reviewed the extant literature on the neuroanatomical variations in schizophrenia in this paper to evaluate their candidacy as endophenotypes and how useful they are in furthering the understanding of etiology and pathophysiology of schizophrenia. Brain morphometric measures meet many of the criteria set by different investigators, such as being robustly associated with schizophrenia, heritable, quantifiable, and present in unaffected family members more frequently than in the general population. We conclude that the brain morphometric alterations appear largely to meet the criteria for endophenotypes in psychotic disorders. Some caveats for the utility of endophenotypes are discussed. A proposal to combine more than one endophenotype ("extended endophenotype") is suggested. Further work is needed to examine how specific genes and their interactions with the environment may produce alterations in brain structure and function that accompany psychotic disorders.

Indexed as

PhenotypeBiomarkersBipolar DisorderBrainCognition DisordersDiseases in TwinsEvent-Related Potentials, P300Evoked Potentials, AuditoryFamilyGenetic Predisposition to DiseaseGenetic VariationGenotypeHumansMagnetic Resonance ImagingReflex, StartleSchizophreniaBiomarkers

Identifiers

PMID18408230
PMCPMC2632444
OpenAlexW2049095386

What OpenQuestion holds

Textmetadata
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.