Evidence map›Paper›PMID 34641964›Full record

SynthesisMolecular autism2021

Regulatory T lymphocytes/Th17 lymphocytes imbalance in autism spectrum disorders: evidence from a meta-analysis.

Pierre Ellul, Michelle Rosenzwajg, Hugo Peyre, Gwladys Fourcade, Encarnita Mariotti-Ferrandiz, Vincent Trebossen, David Klatzmann, Richard Delorme

Open access · goldAbstract readMeta-Analysis
In one paragraph

Synthesis in Molecular autism, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

33 citing papers in PubMed, 50 citations in OpenAlex.

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  9. Neuroinflammation and autism: what have we learned so far?International journal of developmental disabilities · 2026
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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

8 authors at 3 institutions in 1 country.

Pierre EllulAP-HP (Assistance Publique-Hôpitaux de Paris), Robert Debré Hospital, Child and Adolescent Psychiatry Department, Paris University, 48 Boulevard Sérurier, 75019, Paris, France. pierre.ellul@aphp.fr.ORCID 0000-0003-1862-6952
Michelle RosenzwajgINSERM, Immunology-Immunopathology-Immunotherapy (i3), Sorbonne Université, Paris, France.
Hugo PeyreAP-HP (Assistance Publique-Hôpitaux de Paris), Robert Debré Hospital, Child and Adolescent Psychiatry Department, Paris University, 48 Boulevard Sérurier, 75019, Paris, France.
Gwladys FourcadeINSERM, Immunology-Immunopathology-Immunotherapy (i3), Sorbonne Université, Paris, France.
Encarnita Mariotti-FerrandizINSERM, Immunology-Immunopathology-Immunotherapy (i3), Sorbonne Université, Paris, France.
Vincent TrebossenAP-HP (Assistance Publique-Hôpitaux de Paris), Robert Debré Hospital, Child and Adolescent Psychiatry Department, Paris University, 48 Boulevard Sérurier, 75019, Paris, France.
David Klatzmann *INSERM, Immunology-Immunopathology-Immunotherapy (i3), Sorbonne Université, Paris, France.
Richard Delorme *AP-HP (Assistance Publique-Hôpitaux de Paris), Robert Debré Hospital, Child and Adolescent Psychiatry Department, Paris University, 48 Boulevard Sérurier, 75019, Paris, France.
Inserm · FRAssistance Publique – Hôpitaux de Paris · FRInstitut Pasteur · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundImmune system dysfunction has been proposed to play a critical role in the pathophysiology of autism spectrum disorders (ASD). Conflicting reports of lymphocyte subpopulation abnormalities have been described in numerous studies of patients with ASD. To better define lymphocytes abnormalities in ASD, we performed a meta-analysis of the lymphocyte profiles from subjects with ASD.

methodsWe used the PRISMA recommendations to query PubMed, Embase, PsychoINFO, BIOSIS, Science Direct, Cochrane CENTRAL, and Clinicaltrials.gov for terms related to clinical diagnosis of ASD and to lymphocytes' populations. We selected studies exploring lymphocyte subpopulations in children with ASD. The search protocol has been registered in the international Prospective Register of Systematic Reviews (CRD42019121473).

resultsWe selected 13 studies gathering 388 ASD patients and 326 healthy controls. A significant decrease in the CD4+ lymphocyte was found in ASD patients compared to controls [- 1.51 (95% CI - 2.99; - 0.04) p = 0.04] (I LIMITATIONS: Several factors inducing heterogeneity should be considered. First, differences in the staining method may be responsible for a part in the heterogeneity of results. Second, ASD population is also by itself heterogeneous, underlying the need of studying sub-groups that are more homogeneous.

conclusionOur meta-analysis indicates defects in CD4+ lymphocytes, specifically decrease oin Tregs and increase in Th17 in ASD patients and supports the development of targeted immunotherapies in the field of ASD.

Indexed as

Autism Spectrum DisorderT-Lymphocytes, RegulatoryChildHumansASDImmunologyPeripheral bloodRegulatory T lymphocyteTh17 lymphocytes

Identifiers

PMID34641964
PMCPMC8507168
OpenAlexW3207524049

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.