Can a JAK inhibitor tame the immune attack in NMOSD?
NCT ID NCT05792462
First seen Aug 03, 2026 · Last updated Aug 12, 2026 · Updated 3 times
Summary
This early-phase trial tests whether baricitinib, an oral drug that blocks certain immune signals, can reduce relapses in people with neuromyelitis optica spectrum disorder (NMOSD). NMOSD is a rare autoimmune condition where the immune system attacks the optic nerves and spinal cord, causing vision loss and weakness. The study will give participants 4 mg of baricitinib daily for up to 96 weeks, tracking relapse frequency and changes in disability. The goal is to see if this approach is safe and may help control the disease.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- baricitinib
- What this could lead to
- If effective, baricitinib could offer a new oral treatment option to reduce relapses and slow disability in people with NMOSD.
- What could go wrong
- This is an early-phase trial with only 11 participants, so results may not apply broadly. Baricitinib may also have side effects, and its benefit in NMOSD is not yet proven.
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.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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11 people
The number who actually took part.
- Started
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Apr 2023
- Expected to finish
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Mar 2027
An estimate. End dates often move.
- Lead sponsor
-
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.
- 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: 1. Male or female patients ≥ 18 years old; 2. Diagnosis of NMO or NMO spectrum disorder according to the 2015 International Panel for Neuromyelitis Optica Diagnosis criteria; 3. Clinical evidence of either at least one relapse requiring rescue therapy (intravenous corticosteroids, intravenous immunoglobulin, plasma exchange or a combination of these therapies) in the year before screening or at least two relapses requiring rescue therapy in the 2 years before screening; 4. Expanded disability status scale (EDSS) score ≤ 6.0; 5. Patients were seropositive for AQP4-IgG; 6. Able and willing to give written informed consent and comply with the requirements of the study protocol. Exclusion Criteria: 1. Current evidence or known history of clinically significant infection (Herpes simplex virus, varicella-zoster virus, cytomegalovirus, Epstein-Barr virus, human immunodeficiency virus, Hepatitis viruses, Syphilis, etc); 2. Participation in another interventional study within the last 3 months; 3. Tumor disease currently or within the last 5 years; 4. Pregnancy, breastfeeding, or child-bearing potential during the course of the study; 5. Patients with clinically relevant heart, liver, kidney or bone marrow dysfunction; 6. History of venous thromboembolism (VTE), or are considered at high risk for VTE by the investigator.
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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.
Contacts and locations
Locations
-
Tianjin Medical University General Hospital
Tianjin, Tianjin Municipality, 300052, China
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