ClinicalTrials.gg
RecruitingNCT05487989VIP-MODELUpdated Aug 20, 2025

VIsual Pathways Model in Neuro-inflammatory Disorders

An observational study in Optic Neuritis, sponsored by University Hospital, Lille. Recruiting at 1 site in France. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2025-08-20.

Sponsored by University Hospital, Lille · Observational

From the registry’s dates

  • Started Oct 2022; still recruiting 4 years 1 month later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
100
Ages
18 Years to 65 Years
Sex
All
01

Study summary

In neuroinflammatory diseases of the central nervous system (CNS) such as multiple sclerosis (MS), neuromyelitis optica spectrum disorders (NMOSD) and anti-MOG antibody-associated disorders (MOGAD), neuronal degeneration is the consequence of inflammatory and demyelinating lesions in the brain, optic nerve and spinal cord. Both white and grey matter are systematically affected. Lesions of the perivascular spaces containing cerebrospinal fluid (CSF) and meningeal inflammation seem to play an important role in the pathophysiology of these neuroinflammatory diseases. Currently, the interrelation of all these aspects is not clearly established in the pathophysiology of these diseases. In order to better understand the mechanisms that lead to and underlie the clinical disability of patients with these diseases, we need in vivo study models that allow the in-depth study of the neurodegenerative process and the identification of its causes. In this perspective, we make the hypothesis that the visual pathways model is very relevant to measure neuro-axonal loss and to explore the different mechanisms involved in neurodegeneration during MS and other CNS demyelinating diseases. Researchers have at their disposal many tools that allow them to analyse and quantify the neurodegenerative process in a reproducible and very precise manner from a structural and functional point of view, while taking into account possible vascular involvement (MRI, optical coherence tomography - angiography, etc…).

02

Conditions studied

  • Optic Neuritis

Keywords

  • Optic neuritis
  • Optical coherence tomography, MRI, demyelination, neuro-axonal loss.
  • MRI
  • demyelination
  • neuro-axonal loss
03

In context

Optic Neuritis

88 studies on the registry are indexed under Optic Neuritis; 16 are open to participants now.

This study's planned enrollment of 100 is below the median of 150 across 25 observational studies indexed under Optic Neuritis.

Browse Optic Neuritis studies →

Lead sponsor

University Hospital, Lille is the lead sponsor of 631 studies on the registry; 142 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 to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients presenting an episode of acute optic neuritis with the objective of better understanding the pathophysiology of CNS inflammatory diseases and identifying prognostic biomarkers in imaging

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • - Male or female
  • Aged between 18 and 65 years
  • Presenting a clinical picture of optic neuritis for less than 4 weeks, confirmed by neuro-ophthalmological assessment
  • Patient having given written consent to participate in the study
  • Patient with social insurance
  • Patient willing to comply with all study procedures and duration

Exclusion criteria

Exclusion Criteria:

  • - history of optic neuritis on the same side as the recent episode for which the patient is being treated
  • history of retinal pathology (retinal detachment, glaucoma, retinopathies, retinal surgery)
  • diabetes
  • chronic alcohol intoxication
  • to MRI
  • pregnant women
  • persons under protective supervision (ex : guardianship)
  • minors
  • persons deprived of their liberty
  • administrative reasons: inability to receive informed information, inability to participate in the entire study, lack of social security coverage, refusal to sign consent

A history of pre-existing CNS inflammatory demyelinating disease is not a criterion for non-inclusion.

Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
100 participants (estimated)
Patient registry
No

Groups and cohorts

  • optic neuritis patients

    Patients suffering from an acute episode of optic neuritis will be included. There will be only one group of patients prospectively followed-up.

    Other: Clinical examen

Interventions

  • OtherClinical examen

    MRI sequences for research, pupillometry, OCT-angiography, evaluation of visual cognition

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What researchers measure

Primary outcomes

  1. Presence of enhancement of the optic nerve sheath on the axial T1 dixon MRI sequence post gadolinium at the acute phase of optic neuritis.

    Time frame: at inclusion

  2. Low contrast monocular visual acuity (2.5%, LogMAR unit) at distance from acute optic neuritis

    Time frame: at 12 months

Secondary outcomes

  1. Presence of enhancement of the optic nerve sheath on the axial T1 dixon MRI sequence post gadolinium. Macular GCIPL atrophy will be assessed by the variation of mGCIPL volume between inclusion and the maximal follow-up.

    Time frame: at inclusion and at 12 months follow-up

  2. Optic nerve lesion length on 3D-DIR sequence. Alteration of retinal microvascularisation between inclusion and the maximal follow-up.

    Time frame: at inclusion and at 12 months follow-up

  3. Acute alteration of retinal microvascularisation is assessed by the difference of retinal vascular density between inclusion (V0) and one month later (V1).

    Time frame: at inclusion and at 1 months follow-up

  4. Low contrast monocular visual acuity (2.5%, LogMAR unit) measured at 12 months (V5)

    Time frame: at inclusion and at 12 months follow-up

  5. Amplitude of the melanopsin-mediated sustained constriction phase in the blue light-induced pupillary response is assessed at 12 months (V5).

    Time frame: at inclusion and at 12 months follow-up

  6. Optic nerve lesion length assessed at inclusion (V0)

    Time frame: at inclusion

  7. mGCIPL atrophy/retinal vascular alteration are assessed by mGCIPL volume/retinal vessel density difference between inclusion (V0) and at 12 months (V5).

    Time frame: at inclusion and at 12 months follow-up

  8. Presence of leptomeningeal cerebral enhancement

    Time frame: at inclusion, at 6 months and at 12 months follow-up

  9. T2 lesions brain and spinal cord volumes

    Time frame: at inclusion, at 6 months and at 12 months follow-up

  10. Brain grey matter volumes and brain perfusion (3D-ASL)

    Time frame: at inclusion, at 6 months and at 12 months follow-up

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Study locations

1 of 1 sites recruiting
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Oct 2022 (actual). Primary completion is estimated for Apr 2027, 54 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 11, 2022
First posted
Aug 4, 2022
StartActual
Oct 7, 2022
Primary completionEst.
Apr 7, 2027
CompletionEst.
Apr 7, 2028
Last update
Aug 20, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 20, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05487989
Responsible party
Sponsor
First posted
Aug 4, 2022
Start date
Oct 7, 2022
Primary completion
Apr 7, 2027 (estimated)
Completion
Apr 7, 2028 (estimated)
Last update
Aug 20, 2025

Study contacts

Olivier OUTTERYCK, MD
Contact
olivier.outteryck@chu-lille.fr
0320445962 ext. +33
Olivier OUTTERYCK, MD
principal investigator · University Hospital, Lille

Oversight

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

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