Fatigue in MS might be caused by low antibodies – new study investigates
NCT ID NCT05357781
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether low levels of immunoglobulin G (IgG), a type of antibody, are linked to fatigue in people with multiple sclerosis (MS). Researchers will compare fatigue scores and infection rates between MS patients with low IgG and those with normal IgG. The goal is to see if low IgG is a treatable cause of fatigue, which could lead to new ways to help patients feel better.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If this study confirms the link, it could point toward treating fatigue in MS patients with IgG replacement therapy.
- What could go wrong
- This is an observational study, not a treatment trial. It only looks for a connection, so it may not lead to any new therapy.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 106 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2022
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Multiple Sclerosis Patients
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Diagnosis of Multiple Sclerosis following McDonald 2017-Criteria * Age 18-65 years * Stable MS disease at inclusion (definition: no clinical relapse, no MRI activity, stable disability within the last 12 months) * Unchanged immunotherapy within the last 12 months * Expanded Disability Status Scale (EDSS) level \<4 points indicating fully ambulatory patients. * Capability of written informed consent Exclusion Criteria: * Severe depression (definition: Beck Depression Index-II (BDI-II) ≥29 points) or other established psychiatric diagnosis * Immunodeficiency other than hypogammaglobulinemia * Immunglobulin replacement therapy or indication for immunoglobulin replacement therapy * Severe Sleepiness (definition: Epworth-Sleepiness-Scale (ESS) \>16 points) * Fatigue aggravating factors such: liver/renal/thyroid dysfunction, substance abuse, medication (tranquilizers /antiepileptics/psychopharmaceuticals), chronic infectious disease (like hepatitis/HIV). * Other neurodegenerative/autoimmune disease. * Patients not able to give written consent * Vulnerable patients such as children, pregnant women and prisoners
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University Hospital of Bern Inselspital
RECRUITINGBern, Canton of Bern, 3010, Switzerland
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Other studies related to the condition(s) this trial covers.
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- One-Time CAR-T infusion tested against progressive MS
- Can PET scans reveal hidden brain inflammation in MS?
- Can a pill rebuild the Brain's insulation? MS trial puts remyelination to the test
- Migraines and tension headaches may be hidden companions to multiple sclerosis