Evidence map›Paper›PMID 29653835›Full record

SynthesisBiological psychiatry2018

Positron Emission Tomography Studies of the Glial Cell Marker Translocator Protein in Patients With Psychosis: A Meta-analysis Using Individual Participant Data.

Pontus Plavén-Sigray, Granville J Matheson, Karin Collste, Abhishekh H Ashok, Jennifer M Coughlin, Oliver D Howes, Romina Mizrahi, Martin G Pomper, Pablo Rusjan, Mattia Veronese and 2 more

Open access · bronzeAbstract readMeta-Analysis
In one paragraph

Synthesis in Biological psychiatry, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 4 pooled it
5.9field-weighted citation impact, top 2% 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

76 citing papers in PubMed, 4 syntheses or guidelines pooled it, 123 citations in OpenAlex.

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  5. Does a monoclonal antibody targeting immune cells affect glutamatergic level in schizophrenia? A multimodal PET/MRS brain imaging study.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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16 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 4 countries.

Pontus Plavén-SigrayCentre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet and Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden. Electronic address: pontus.plaven-sigray@ki.se.
Granville J MathesonCentre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet and Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden.
Karin CollsteCentre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet and Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden.
Abhishekh H AshokInstitute of Psychiatry, Psychology, & Neuroscience, King's College London, London, United Kingdom; Medical Research Council London Institute of Medical Sciences, Hammersmith Hospital, London, United Kingdom; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom.
Jennifer M CoughlinDepartment of Psychiatry and Behavioral Sciences, Johns Hopkins Medical Institutions, Baltimore, Maryland; Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland.
Oliver D HowesInstitute of Psychiatry, Psychology, & Neuroscience, King's College London, London, United Kingdom; Medical Research Council London Institute of Medical Sciences, Hammersmith Hospital, London, United Kingdom; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom.
Romina MizrahiDepartment of Psychiatry, University of Toronto, Toronto, Ontario, Canada.
Martin G PomperDepartment of Psychiatry and Behavioral Sciences, Johns Hopkins Medical Institutions, Baltimore, Maryland; Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland.
Pablo RusjanDepartment of Psychiatry, University of Toronto, Toronto, Ontario, Canada.
Mattia VeroneseDepartment of Neuroimaging, Institute of Psychiatry, Psychology, & Neuroscience, King's College London, London, United Kingdom.
Yuchuan WangRussell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, Maryland.
Simon CervenkaCentre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet and Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden.
Stockholm County Council · SEJohns Hopkins University · USKing's College London · GBUniversity of Toronto · CA

Funding

Imaging Neuroinflammation in Clinical high risk and SchizophreniaR01MH100043 · NIMH · CENTRE FOR ADDICTION AND MENTAL HEALTH · PI MIZRAHI, ROMINA · 2014 to 2018
$1.6M
Medical Research Council MC_U120097115NIMH NIH HHS R01 MH100043Wellcome TrustWellcome Trust 094849/Z/10/Z
6 · The paper itself

Abstract

backgroundAccumulating evidence suggests that the immune system may be an important target for new treatment approaches in schizophrenia. Positron emission tomography and radioligands binding to the translocator protein (TSPO), which is expressed in glial cells in the brain including immune cells, represents a potential method for patient stratification and treatment monitoring. This study examined whether patients with first-episode psychosis and schizophrenia had altered TSPO levels compared with healthy control subjects.

methodsPubMed was searched for studies comparing patients with psychosis with healthy control subjects using second-generation TSPO radioligands. The outcome measure was total distribution volume (V

resultsFive studies, with 75 participants with first-episode psychosis or schizophrenia and 77 healthy control subjects, were included. BFs showed strong support for lower V

conclusionsThe lower levels of TSPO observed in patients may correspond to altered function or lower density of brain immune cells. Future studies should focus on investigating the underlying biological mechanisms and their relevance for treatment.

Indexed as

Bayes TheoremBiomarkersBrainCase-Control StudiesFemaleHumansMaleMicrogliaNeurogliaPositron-Emission TomographyPsychotic DisordersPyridinesRadiopharmaceuticalsReceptors, GABASchizophreniaBiomarkersPyridinesRadiopharmaceuticalsReceptors, GABATSPO protein, humanImmune activationMeta-analysisMicrogliaPositron emission tomographyPsychosisSchizophreniaTranslocator protein

Identifiers

PMID29653835
PMCPMC7893597
OpenAlexW2952123642

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.