NCT07184840Active, not recruitingPhase 2
Eculizumab For the Acute Attack of Neuromyelitis Optica Spectrum Disorder
Eculizumab For Acute Attack of Neuromyelitis Optica Spectrum Disorder (NMOSD): a Multi-Center, Phase 2 Trial (EASE-NMO)
Source: ClinicalTrials.gov · Last updated 3 Jun 2026
Brief summary (registry, in English)
Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing, inflammatory autoimmune disorder of the central nervous system characterized by the pathogenic anti-aquaporin 4 antibody (AQP4-IgG). The objectives of this study are to assess the efficacy and safety of eculizumab for treatment of patients with neuromyelitis optica spectrum disorders during acute phase who are anti-aquaporin-4 (AQP4) antibody-positive. Eculizumab, a humanized monoclonal antibody, inhibits the terminal complement protein C5 and prevents its cleavage into C5a and the formation of C5b-9 (MAC), has approved for preventive treatment of NMOSD. Given the high efficacy of C5 inhibition, eculizumab is proposed to potentially provide rapid relief from astrocyte destruction by reducing MAC formation, which could contribute to the fast alleviation of neurological deficit during NMO acute attack. The potential of eculizumab warrants further investigation as a treatment for acute neuromyelitis optica spectrum disorders attacks.
- Status (registry)
- Active, not recruiting
- Phase (registry)
- Phase 2
- Study type
- Interventional
- Enrollment
- 110 (actual)
- First submitted
- 8 Sept 2025
- Start date
- 9 Sept 2025
- Primary completion date
- 28 Apr 2026
- Lead sponsor
- Tianjin Medical University General Hospital
- Diseases
- Neuromyelitis optica (NMOSD)
- NCT number
- NCT07184840
What you commit to
- Study type: Interventional · Phase 2
- Participants enrolled: 110
- From 9 Sept 2025 to the primary completion date, 28 Apr 2026
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Use of IVIg within 3 weeks prior to screening
- Any systemic bacterial or other infection which is clinically significant in the opinion of the Investigator and has not been treated with appropriate antibiotics
- Participation in any other investigational drug study or was exposed to an investigational drug or device within 30 days of screening.
- Has previously received treatment with eculizumab
Other illness
- Unresolved meningococcal infection
- Hypersensitivity to murine proteins or to one of the excipients of eculizumab
- Any medical condition that, in the opinion of the Investigator, might interfere with thepatient's participation in the trial, poses any added risk for the patient, or confounds the assessment of the patients
Who the study is looking for
- Anti-AQP4 antibody seropositive.
- Male or female patients ≥18 years old
- Body weight ≥ 35 kg
- Acute optic neuritis and/or transverse myelitis enrolled within 28 days from the attack, with a change in neurological exam that meet an increase of OSIS at least 2 points of baseline compared to that of prior attack.
- A female subject is eligible to enter the trial if she is:
- Not pregnant or breastfeeding, not intending to conceive during the course of the trial
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Tianjin Medical University General Hospital Coordinator of this site? Confirm its status | Tianjin | China | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.