New study aims to unravel mysteries of rare susac syndrome
NCT ID NCT06881368
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is collecting detailed information from 180 people with Susac syndrome, a rare condition that affects the brain, hearing, and vision. Researchers want to learn more about the symptoms, possible causes, and how the disease progresses over time. The goal is to improve diagnosis and care for patients with this little-understood syndrome.
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 successful, this study could provide a clearer picture of Susac syndrome, helping doctors diagnose it earlier and manage symptoms more effectively.
- What could go wrong
- This is an observational study, not a treatment trial. It will not test any new drug or therapy, so it cannot directly lead to a cure or new treatment.
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 180 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2025
- Expected to finish
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Feb 2045
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
The population to be studied will be patients with defined Susac syndrome, presenting with at least two of the signs of the clinical triad, having compatible complementary examinations and after elimination of differential diagnoses (see inclusion and non-inclusion criteria below). Patients will be included prospectively. The existence of an associated pathology (autoimmune, tumour, metabolic, etc.) is not a criterion for exclusion.
- Ages
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18 years and older
- 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: * Patient over 18 years of age * Patient presenting with at least two of the signs of the clinical triad: encephalopathy, cochlear damage authenticated by an audiogram (uni- or bilateral, predominantly in the middle or low frequencies), retinal artery occlusion assessed by fundoscopy or fluorescein retinal angiography. Exclusion Criteria: * Patient having been individually informed and objecting to the use of his/her data * Patient under legal protection (guardianship or curatorship) * Differential diagnosis established: multiple sclerosis, mitochondriopathy, CADASIL, primary tumour of the central nervous system, Lyme disease.
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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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Hôpital Bichat
RECRUITINGParis, 75018, France
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