Evidence map›Paper›PMID 34441971›Full record

ArticleJournal of clinical medicine2021

Autoantibodies to Vasoregulative G-Protein-Coupled Receptors Correlate with Symptom Severity, Autonomic Dysfunction and Disability in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.

Helma Freitag, Marvin Szklarski, Sebastian Lorenz, Franziska Sotzny, Sandra Bauer, Aurélie Philippe, Claudia Kedor, Patricia Grabowski, Tanja Lange, Gabriela Riemekasten and 2 more

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Journal of clinical medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05629988 (Observational Study of Repeat Immunoadsorption), which is not on this map. Cited by 42 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 1 pooled it
8.5field-weighted citation impact, top 1% 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.

NCT05629988 completednot on this mapstarted 2022, after this paper: background citation

Observational Study of Repeat Immunoadsorption (RIA) in Post Covid ME/CFS Patients With Elevated ß2 Adrenergic Receptor Autoantibodies

TypeobservationalSponsorCharite University, Berlin, GermanyRan2022 to 2025Enrolled20ConditionsPost-COVID ME/CFSArmsIA with TheraSorb ® column
3 · Its place in the literature

Who cites it

42 citing papers in PubMed, 1 synthesis or guideline pooled it, 72 citations in OpenAlex.

  1. Recent research in myalgic encephalomyelitis/chronic fatigue syndrome: an evidence map.Health technology assessment (Winchester, England) · 2025
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. An Overview of Severe Myalgic Encephalomyelitis.Journal of clinical medicine · 2026
    Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
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  15. Article
  16. Review
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  20. 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

12 authors at 4 institutions in 1 country.

Helma FreitagInstitute of Medical Immunology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.ORCID 0000-0001-5950-0489
Marvin SzklarskiInstitute of Medical Immunology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.ORCID 0000-0002-8129-9192
Sebastian LorenzInstitute of Medical Immunology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.
Franziska SotznyInstitute of Medical Immunology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.
Sandra BauerInstitute of Medical Immunology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.
Aurélie PhilippeDepartment of Nephrology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.
Claudia KedorInstitute of Medical Immunology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.
Patricia GrabowskiInstitute of Medical Immunology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.
Tanja LangeDepartment of Rheumatology and Clinical Immunology, University of Lübeck, 23538 Lübeck, Germany.ORCID 0000-0001-8309-2112
Gabriela RiemekastenDepartment of Rheumatology and Clinical Immunology, University of Lübeck, 23538 Lübeck, Germany.
Harald HeideckeCellTrend GmbH, 14943 Luckenwalde, Germany.
Carmen ScheibenbogenInstitute of Medical Immunology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany.ORCID 0000-0002-8554-9638
Charité - Universitätsmedizin Berlin · DEUniversity of Lübeck · DEBerlin Institute of Health at Charité - Universitätsmedizin Berlin · DEInstitute of Pathology Celle · DE

Funding

Lost Voices Foundation scholarship w/o numberWeidenhammer-Zöbele Foundation n.a.
6 · The paper itself

Abstract

backgroundMyalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is an acquired complex disease with patients suffering from the cardinal symptoms of fatigue, post-exertional malaise (PEM), cognitive impairment, pain and autonomous dysfunction. ME/CFS is triggered by an infection in the majority of patients. Initial evidence for a potential role of natural regulatory autoantibodies (AAB) to beta-adrenergic (AdR) and muscarinic acetylcholine receptors (M-AChR) in ME/CFS patients comes from a few studies.

methodsHere, we analyzed the correlations of symptom severity with levels of AAB to vasoregulative AdR, AChR and Endothelin-1 type A and B (ETA/B) and Angiotensin II type 1 (AT1) receptor in a Berlin cohort of ME/CFS patients (

resultsWe found levels of most AABs significantly correlated with key symptoms of fatigue and muscle pain in patients with infection-triggered onset. The severity of cognitive impairment correlated with AT1-R- and ETA-R-AAB and severity of gastrointestinal symptoms with alpha1/2-AdR-AAB. In contrast, the patients with non-infection-triggered ME/CFS showed fewer and other correlations.

conclusionCorrelations of specific AAB against G-protein-coupled receptors (GPCR) with symptoms provide evidence for a role of these AAB or respective receptor pathways in disease pathomechanism.

Indexed as

adrenergic receptorsautoantibodiesautoimmunitychronic fatigue syndromeG-protein-coupled receptormyalgic encephalomyelitisvasoregulation

Identifiers

PMID34441971
PMCPMC8397061
OpenAlexW3195641092

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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.