Internuclear Ophthalmoplegia and Multiple Sclerosis: a Multicenter Retrospective Study (INO&MS)

May 4, 2026 updated by: University Hospital, Strasbourg, France

Internuclear ophthalmoplegia is a symptom frequently associated with multiple sclerosis (MS), although other etiologies are possible. Some patients do not meet the diagnostic criteria for MS at the time of the internuclear ophthalmoplegia episode but subsequently convert to MS. Studying this specific clinical situation may help enable earlier diagnosis of MS.

The objective is to analyze the proportion of patients with isolated internuclear ophthalmoplegia who convert to multiple sclerosis and to identify factors associated with this conversion.

The study hypothesis is that the presence of internuclear ophthalmoplegia is highly suggestive of multiple sclerosis, particularly when cerebrospinal fluid-specific oligoclonal bands are present.

Study Overview

Status

Not yet recruiting

Conditions

Study Type

Observational

Enrollment (Estimated)

200

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

The extraction of records will be performed through a search using PMSI coding within the medical files of patients hospitalized in a neurology department.

Description

Inclusion criteria:

  • Patients with internuclear ophthalmoplegia listed as a primary or associated diagnosis
  • Patients hospitalized in a neurology department

Exclusion criteria:

- Patients under 18 years of age

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Internuclear ophthalmoplegia
This is a retrospective cohort study involving patients who have experienced internuclear ophthalmoplegia. For each patient, it is determined whether a diagnosis of multiple sclerosis was established or not.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Analyze the proportion of patients with isolated internuclear ophthalmoplegia who convert to multiple sclerosis.
Time Frame: 1 year
Proportion of patients with isolated internuclear ophthalmoplegia who converted to multiple sclerosis during follow-up.
1 year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Strasbourg, France

Investigators

  • Principal Investigator: Kévin BIGAUT, Hopitaux universitaires de Strasbourg

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

May 1, 2026

Primary Completion (Estimated)

May 1, 2026

Study Completion (Estimated)

May 1, 2027

Study Registration Dates

First Submitted

April 24, 2026

First Submitted That Met QC Criteria

April 24, 2026

First Posted (Actual)

May 1, 2026

Study Record Updates

Last Update Posted (Actual)

May 8, 2026

Last Update Submitted That Met QC Criteria

May 4, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CE-2025-86

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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