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Not yet recruitingNCT07526298Updated Apr 13, 2026

Anticipating Irreversible Disability in Neuromyelitis Optica Spectrum Disorder: a Study to Assess Disease Activity in Apparently Stable Patients

An observational study in Neuromyelitis Optica Spectrum Disorders, sponsored by IRCCS San Raffaele. Not yet recruiting at 1 site in Italy. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-04-13.

Sponsored by IRCCS San Raffaele · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
50
Ages
18 Years and older
Sex
All
01

Study summary

The present research is an observational clinical study. The project aims to investigate astrocytic damage, assessed through biological findings such as an increase in GFAP level and/or MRI water index, in patients with NMOSD and its potential role in predicting demyelinating relapses or affecting disability outcomes. It will also explore predictors of astrocytic relapses, focusing on demographic, clinical, and immunological biomarkers like T cell responses, B cell repopulation, and cytokine levels. The goal is to identify unrecognized disease activity, providing insights for future research and clinical trials.

The study will involve 8 sites in Italy: 6 NMOSD clinical centers for patient enrolment and 2 centers for bioengineering and biological analysis. Centralized analysis of the MRI images of all patients enrolled in the clinical centers will be performed by the Neuroimaging Research Unit Fase 1 of San Raffaele Hospital. A total of 50 patients will be included and they will be followed for 12 months.

Comprehensive evaluation of patients, including clinical assessment, bioengineering evaluation, MRI, and blood samples, will be conducted at baseline, month 6, and month 12. To assess silent astrocytic relapses, a specialized evaluation will take place at months 3 and 9, including clinical analysis, blood samples to assess biomarkers like GFAP, a reduced MRI protocol to assess MRI water index, and bioengineering evaluation. In the case of a classical relapse, a dedicated visit will occur within 5 days of symptom onset, using the same evaluation protocol as at months 3 and 9 (MRI and biomarkers will be evaluated if not done in the month before).

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Conditions studied

  • Neuromyelitis Optica Spectrum Disorders

Keywords

  • Relapse
  • Astrocytic damage
  • MRI
  • GFAP
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In context

Neuromyelitis Optica

162 studies on the registry are indexed under Neuromyelitis Optica; 72 are open to participants now.

This study's planned enrollment of 50 is below the median of 200 across 57 observational studies indexed under Neuromyelitis Optica.

Browse Neuromyelitis Optica studies →

Lead sponsor

IRCCS San Raffaele is the lead sponsor of 443 studies on the registry; 234 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

The study will include adult patients with NMOSD.

Inclusion criteria

  • Adult patients (age ≥18 years);
  • NMOSD diagnosis with AQP4 IgG positive status assessed with a cell-based assay;
  • Under rituximab treatment (standard of care) from at least 1 year and for not more than 5 years;
  • Ability to provide written informed consent.

Exclusion criteria

Exclusion Criteria:

  • History of a clinical relapse or new/enlarging T2 lesion during the 6 months preceding the enrollment;
  • Steroids treatment during 30 days before the enrollment;
  • Any contraindication to MRI;
  • Patients currently participating in a different clinical trial;
  • Patients currently pregnant.
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
50 participants (estimated)
Target follow-up
12 Months
Patient registry
Yes

Groups and cohorts

  • Adult patients with NMOSD

    Diagnostic Test: MRI · Diagnostic Test: Immunological Factors

Interventions

  • Diagnostic testMRI

    MRI will be performed every 3 months from baseline to 1 year.

  • Diagnostic testImmunological Factors

    Immunological factors will be performed every 3 months from baseline to 1 year.

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What researchers measure

Primary outcomes

  1. Identifying predictors of clinical relapse

    The primary outcomes measures are: percentage of patients with relapse, defined by the occurrence of a novel/worsening NMOSD symptom (detected by patient reported outcomes or clinical judgment or bioengineering indexes) PLUS biological findings of astrocyte damage (increase of GFAP level and/or MRI water index).

    Time frame: From enrollment to 12 months

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Study locations

1 site
  • San Raffaele Hospital
    Milan, Milan 20132, Italy
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References and documents

Publications

  • Masuda H, Mori M, Hirano S, Uzawa A, Uchida T, Muto M, Ohtani R, Aoki R, Kuwabara S. Silent progression of brain atrophy in aquaporin-4 antibody-positive neuromyelitis optica spectrum disorder. J Neurol Neurosurg Psychiatry. 2022 Jan;93(1):32-40. doi: 10.1136/jnnp-2021-326386. Epub 2021 Aug 6. PubMed 34362853 ↗
  • Margoni M, Gueye M, Meani A, Pagani E, Valsasina P, Storelli L, Preziosa P, Moiola L, Rocca MA, Filippi M. Substrates of 8.5-year clinical outcomes in aquaporin-4 IgG-positive neuromyelitis optica spectrum disorders. J Neurol. 2026 Feb 2;273(2):112. doi: 10.1007/s00415-026-13647-x. PubMed 41627519 ↗
  • Lorefice L, Carotenuto A, Fenu G. Silent burden: recognising and managing invisible symptoms in neuromyelitis optica. J Neurol Neurosurg Psychiatry. 2025 Jul 16;96(8):744-752. doi: 10.1136/jnnp-2025-336041. PubMed 40506118 ↗
  • Cacciaguerra L, Pagani E, Radaelli M, Mesaros S, Martinelli V, Ivanovic J, Drulovic J, Filippi M, Rocca MA. MR T2-relaxation time as an indirect measure of brain water content and disease activity in NMOSD. J Neurol Neurosurg Psychiatry. 2022 Apr 28:jnnp-2022-328956. doi: 10.1136/jnnp-2022-328956. Online ahead of print. PubMed 35483915 ↗

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 13, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07526298
Lead sponsor
IRCCS San Raffaele
Collaborators
Amgen
Responsible party
Prof. Massimo Filippi (Prof., IRCCS San Raffaele) — Principal investigator
First posted
Apr 13, 2026
Start date
Apr 1, 2026 (estimated)
Primary completion
Apr 1, 2027 (estimated)
Completion
Apr 1, 2027 (estimated)
Last update
Apr 13, 2026

Study contacts

Massimo Filippi, Prof.
Contact
filippi.massimo@hsr.it
+39-02-26433032
Mara Rocca, Prof
Contact
rocca.mara@hsr.it
+39-02-26433054

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Feb 2026. You cannot join it, but the record below documents what was studied.

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