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Post-COVID ME/CFSNCT05629988

Repeat Immunoadsorption Post Covid ME/CFS

An observational study of Post-COVID ME/CFS, run by Charite University, Berlin, Germany at 1 site in Germany.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The evidence for an autoimmune etiology in postinfectious myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is growing. The investigators observed in a not yet published study that in ME/CFS triggered by COVID, similar to ME/CFS after other infections, there is a close correlation of ß2 adrenergic receptor… Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Post-COVID ME/CFS
What is being tested?
IA with TheraSorb ® column
Type of treatment
Medical device
How many people
20 participants
Where
1 siteGermany
Study dates
28 Aug 2022to 31 Mar 2025
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Patients presenting at the investigators' outpatient clinic who meet the CCC for ME/CFS (PEM for at least 14h or longer) and who are found to have elevated ß2R autoantibodies will be offered an IA and participation in this observational study. Also, PCS patients who do not meet CCC criteria due to shorter PEM (< 14h) but meet Systemic Exertion Intolerance Disease criteria may receive IA and be enrolled in the study.

Who may be able to join

  • Consenting patients aged 18-65 years with a diagnosis of Post-COVID ME/CFS according to the Canadian Consensus Criteria (CCC) or fulfilling CCC with exertion intolerance with symptom worsening (post exertional malaise = PEM) duration of less than 14 hours (thus fulfilling Institute of Medicine criteria)
  • Evidence of COVID infection at disease onset (PCR) or N-IgG
  • Detection of autoantibodies (elevated ß2 receptor adrenergic autoantibodies)
  • Immunoadsorption with the TheraSorb® column for 5 days
  • Health insurance

Who cannot join

  • Lack of willingness to store pseudonymized disease data as part of the study
  • Pregnancy
  • Other illnesses that do not allow the diagnosis of PCS to be made with certainty (e.g., heart failure, lung disease, severe depression, cancer)
  • Acute infection (COVID, HIV, hepatitis)
  • Severe fatigue disease with bedriddenness

Trial locations and contacts

1 site in 1 country.

Germany1 site

  • Charité - Universitätsmedizin Berlin

    Berlin, State of Berlin, 10117

Other trials in Germany

About this study

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

The evidence for an autoimmune etiology in postinfectious myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is growing. The investigators observed in a not yet published study that in ME/CFS triggered by COVID, similar to ME/CFS after other infections, there is a close correlation of ß2 adrenergic receptor (ß2R) autoantibodies with symptom severity.

Immunoadsorption (IA) to remove autoantibodies has been used successfully in many autoantibody-mediated diseases. The investigators have already performed two proof of concept studies of IA in postinfectious ME/CFS with elevated ß2R antibodies, which resulted in improvement in most patients. This observational study aims to assess symptom outcome and functional ability in 20 patients with Post-COVID Syndrome (PCS) meeting ME/CFS diagnostic criteria with elevated ß2R antibodies undergoing antibody depletion by IA. The study will be conducted as a non-interventional observational study. IA with Miltenyi's TheraSorb® column in PCS will be performed in the approved use. Patients who have symptom improvement after the 1st IA will receive two additional IAs at 3 and 6 months, which will also be documented.

The results of this observational study will provide the basis for a randomized controlled clinical trial (RCT) combining IA with B-cell depletion therapy preferentially with Obinutuzumab.

Read the detailed description

Studies indicate an overlap between post-COVID syndrome (PCS) and ME/CFS (Kedor et al., 2022). Post-infectious ME/CFS (ICD-10 code G93.3) is a complex and severely disabling disease with no approved treatment and thus, a very high medical need. Following an acute infection, patients suffer from severe central and muscle fatigue, chronic pain, cognitive impairment, and immune and autonomic dysfunction. The key symptom of ME/CFS is exertion intolerance with minor exertion resulting in symptom aggravation, also called post-exertional malaise (PEM), lasting until the next day up to weeks.

Various pathogens are known to induce post-infectious ME/CFS, including the Epstein-Barr virus and SARS-CoV-2 (Sotzny, 2018). The investigators' ongoing Charité PA-COVID study (Berlin prospective COVID-19 patient cohort) and other reports show that SARS-CoV-2 triggers ME/CFS in a subset of mostly younger patients without preexisting comorbidities (Kedor et al., 2022). Due to the rapid increase of COVID-19 incidence worldwide, the prevalence of post-COVID-19 ME/CFS will likely be a substantial problem for health care and society.

The evidence for an autoimmune etiology in post-infectious ME/CFS is growing (reviewed in Sotzny et al., 2018). Also, COVID-19 is a disease with a high risk for autoimmunity and developing ME/CFS due to the infection of many different cell types and the severity of immune activation. There is evidence from several studies from the investigators and other groups that natural regulatory autoantibodies targeting G protein-coupled receptors (GPCR) are involved in the pathogenesis of various autoimmune diseases. The investigators and others described enhanced levels and dysfunction of ß2R autoantibodies in ME/CFS and their correlation with the severity of key clinical symptoms (Freitag et al., 2021). The investigators' working hypothesis is that GPCR-specific autoantibodies with altered binding affinity or epitope specificity lead to immune dysregulation and autonomous dysfunction, and play a significant role in the pathomechanism of ME/CFS (Wirth et al., 2020). The investigators observed -- in a not yet published study -- a close correlation of ß2R antibodies with symptom severity in ME/CFS after COVID, similar to ME/CFS after other infections (Freitag et al., 2021). Two small proof-of-concept studies with immunoadsorption (IA) in patients with ME/CFS after other infections have shown improvements in symptoms in most patients (Scheibenbogen et al., 2018; Toelle et al., 2020).

In this observational non-controlled trial, PCS ME/CFS patients who receive IA will be evaluated for clinical efficacy, a decrease in autoantibodies, and a change of biomarkers. IA with Miltenyi's TheraSorb® column will be performed in the approved use. Patients who have symptom improvement after the 1st IA will receive two additional IAs at 3 and 6 months, which will also be documented. Symptom severity will be assessed by online questionnaires and at repeated time points.

Patients will be recruited for IA from the investigators' ongoing observational study with a follow-up of at least six months without disease improvement (Kedor et al., 2022). Patients have received a comprehensive diagnostic assessment to exclude other diseases, central nervous system, or organ comorbidity. ß2R autoantibodies in serum are determined by ELISA (Celltrend). Within four weeks prior to IA, patients will be assessed for eligibility for study participation by clinical investigation, laboratory analysis, and symptom questionnaires. The first ten patients will be treated end of August - mid of October and analyzed for efficacy until the beginning of December 2022 with a grant from the Weidenhammer-Zoebele foundation. The subsequent ten patients will be treated and analyzed with funding from the Federal Ministry of Education and Research(BMBF). These ten patients will also receive vessel diagnostics before (within four weeks) and four weeks after the first IA. In all 20 patients, blood will be collected the week before and four weeks after the first IA. All visits and treatments will take place in outpatient clinics.

Antibody depletion in PCS using IA has yet to be investigated in a clinical trial. The results of this observational study will provide the basis for a RCT using IA and, in responders, consecutive B-cell depleting therapy with an anti-CD20 monoclonal antibody versus placebo.

Being tested
IA with TheraSorb ® column
Keywords
Post-COVID Syndrome, Long COVID, Chronic Fatigue Syndrome
Medical subject headings
Post-Acute COVID-19 Syndrome, Fatigue Syndrome, Chronic

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • IA with TheraSorb ® columnDevice

    IA cycle is 5 days, repeat cycles will be given to responders at months 3 and 6

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Improvement in Physical Function (PF) as measured by the Short Form 36 Health Survey Questionnaire (SF-36)

    The Short Form 36 Health Survey (SF-36) is an established and widely used health-related quality of life measure. The Physical Function (PF) domain asks patients to report limitations on ten mobility activities, such as walking specified distances, carrying groceries, and bathing or dressing. Scores are weighted and transformed into a scale ranging from 0 (greatest possible health restrictions, i.e., severe disability) to 100 (no health restrictions). An intra-patient change of 10 points in SF-36-PF from baseline to week four is considered clinically meaningful.

    Measured: 4 weeks after first IA

Secondary outcomes (12)

  1. Efficacy of repeat immunoadsorptions (IA) on Physical Function (PF) as measured by the Short Form 36 Health Survey Questionnaire (SF-36)

    Patients who have meaningful improvements in PF after the first IA, will receive two additional IAs at 3 and 6 months. Enhanced efficacy of repeat IAs on PF as measured by the SF-36 will be documented and assessed.

    Measured: 3 - 6 months after first IA

  2. Response duration of repeat immunoadsorptions (IA) on Physical Function (PF) as measured by the Short Form 36 Health Survey Questionnaire (SF-36)

    Additive effect of repeat IA to increase response duration after each IA cycle. Response duration assessed by SF-36 PF (> 10 points).

    Measured: 3 - 6 months after first IA

  3. Improvement in ability to work in daily hours

    Number of patients with an intra-patient change in his/her/their ability to work in daily hours from 6 months before first IA to 12 months after last IA.

    Measured: 12 months after last IA

  4. Improvement in physical and mental fatigue as measured by the Chalder Fatigue Scale

    The Chalder Fatigue Scale measures the extent and severity of tiredness and has been used in multiple randomized trials of behavioral interventions in patients with ME/CFS. Each of the 11 items is answered on a 4-point scale with an overall score ranging from 0 (asymptomatic) to 33 (maximum symptomology). Intra-patient change in physical and mental fatigue from baseline to follow-up points will be documented as indexed by the Chalder Fatigue Scale.

    Measured: 4 weeks after first IA; 6 and 12 months after last IA

  5. Improvement in fatigue as measured by the Fatigue Severity Score (FSS)

    The Fatigue Severity Scale (FSS) is a 9-item scale that measures the severity of fatigue and its effect on a person's activities and lifestyle. Answers are scored on a seven-point scale (1 = strongly disagree; 7 = strongly agree). Thus, the minimum score is 9 (no fatigue), and the highest is 63 (heavy fatigue). Intra-patient change in fatigue severity from baseline to follow-up points will be documented as indexed by the FSS.

    Measured: 4 weeks after first IA; 6 and 12 months after last IA

  6. Improvement in symptoms of myalgic encephalomyelitis (ME)/ chronic fatigue syndrome (CFS) as measured by Canadian Consensus Criteria (CCC) Symptom Score

    The Canadian Consensus Criteria (CCC) Symptom Score quantifies ME/CFS symptoms. Its score ranges from 1 (no symptoms) to 10 (extreme symptoms). Intra-patient change in ME/CFS symptoms from baseline to follow-up points will be documented as indexed by the CCC Symptom Score.

    Measured: 4 weeks after first IA; 6 and 12 months after last IA

  7. Improvement in symptoms of autonomic dysfunction as measured by the Composite Autonomic Symptom Score (COMPASS-31)

    The Composite Autonomic Symptom Score (COMPASS-31) is a refined, internally consistent, and markedly abbreviated quantitative measure of autonomic symptoms. It is based on the original Autonomic Symptom Profile (ASP) and COMPASS, applies a much-simplified scoring algorithm, and is suitable for widespread use in autonomic research and practice. It evaluates six domains of autonomic function: orthostatic intolerance, vasomotor, secretomotor, gastrointestinal, bladder, and pupillomotor domains. The score ranges from 0 (no symptoms) to 100 (strong autonomic dysfunction). Intra-patient change in autonomic dysfunction from baseline to follow-up points will be documented as indexed by the COMPASS-31.

    Measured: 4 weeks after first IA; 6 and 12 months after last IA

  8. Improvement in hand grip strength

    Intra-patient change in hand grip strength from baseline to follow-up points assessed using the Handgrip-Muscle-Fatigue Test

    Measured: 4 weeks after first IA; 6 and 12 months after last IA

  9. Improvement of vascular regulation as indexed by the reactive hyperemia index (RHI) assessed using Endopat.

    Intra-patient change in endothelial cell function from baseline to follow-up points assessed using Endopat

    Measured: 6 and 12 months after last IA

  10. Improvement in symptoms of orthostatic intolerance assessed using the Passive Standing Test

    Intra-patient change in orthostatic intolerance from baseline to follow-up points assessed using the Passive Standing Test.

    Measured: 4 weeks after first IA; 6 and 12 months after last IA

  11. Decrease in ß2R autoantibodies and soluble biomarkers of disease

    Intra-patient change in ß2R autoantibodies and soluble biomarkers of disease from baseline to follow-up points assessed

    Measured: 4 weeks after first IA; 6 and 12 months after last IA

  12. Verification of tolerability

    Number of patients tolerating the IA treatment.

    Measured: 4 weeks after last IA

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted29 Nov 2022
  2. Study start28 Aug 2022
  3. Primary completion11 Feb 2025
  4. Study completion31 Mar 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
20 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05629988
Sponsor's protocol ID
IAINPCS
Other IDs
01EP2201
Status last verified
May 2025
First submitted
14 Nov 2022
Last updated
31 May 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Kedor C, Freitag H, Meyer-Arndt L, Wittke K, Hanitsch LG, Zoller T, Steinbeis F, Haffke M, Rudolf G, Heidecker B, Bobbert T, Spranger J, Volk HD, Skurk C, Konietschke F, Paul F, Behrends U, Bellmann-Strobl J, Scheibenbogen C. A prospective observational study of post-COVID-19 chronic fatigue syndrome following the first pandemic wave in Germany and biomarkers associated with symptom severity. Nat Commun. 2022 Aug 30;13(1):5104. doi: 10.1038/s41467-022-32507-6.

    PubMed 36042189

  • Sotzny F, Blanco J, Capelli E, Castro-Marrero J, Steiner S, Murovska M, Scheibenbogen C; European Network on ME/CFS (EUROMENE). Myalgic Encephalomyelitis/Chronic Fatigue Syndrome - Evidence for an autoimmune disease. Autoimmun Rev. 2018 Jun;17(6):601-609. doi: 10.1016/j.autrev.2018.01.009. Epub 2018 Apr 7.

    PubMed 29635081

  • Freitag H, Szklarski M, Lorenz S, Sotzny F, Bauer S, Philippe A, Kedor C, Grabowski P, Lange T, Riemekasten G, Heidecke H, Scheibenbogen C. Autoantibodies to Vasoregulative G-Protein-Coupled Receptors Correlate with Symptom Severity, Autonomic Dysfunction and Disability in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome. J Clin Med. 2021 Aug 19;10(16):3675. doi: 10.3390/jcm10163675.

    PubMed 34441971

  • Scheibenbogen C, Loebel M, Freitag H, Krueger A, Bauer S, Antelmann M, Doehner W, Scherbakov N, Heidecke H, Reinke P, Volk HD, Grabowski P. Immunoadsorption to remove ss2 adrenergic receptor antibodies in Chronic Fatigue Syndrome CFS/ME. PLoS One. 2018 Mar 15;13(3):e0193672. doi: 10.1371/journal.pone.0193672. eCollection 2018.

    PubMed 29543914

  • Tolle M, Freitag H, Antelmann M, Hartwig J, Schuchardt M, van der Giet M, Eckardt KU, Grabowski P, Scheibenbogen C. Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: Efficacy of Repeat Immunoadsorption. J Clin Med. 2020 Jul 30;9(8):2443. doi: 10.3390/jcm9082443.

    PubMed 32751659

  • Stein E, Heindrich C, Wittke K, Kedor C, Kim L, Freitag H, Kruger A, Tolle M, Scheibenbogen C. Observational Study of Repeat Immunoadsorption (RIA) in Post-COVID ME/CFS Patients with Elevated ss2-Adrenergic Receptor Autoantibodies-An Interim Report. J Clin Med. 2023 Oct 9;12(19):6428. doi: 10.3390/jcm12196428.

    PubMed 37835071

Questions about this trial

What is this clinical trial studying?

An observational study of Post-COVID ME/CFS, run by Charite University, Berlin, Germany at 1 site in Germany.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 31 May 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Germany. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Improvement in Physical Function (PF) as measured by the Short Form 36 Health Survey Questionnaire (SF-36) (time frame: 4 weeks after first IA). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05629988, which also lists 6 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 31 May 2025.

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