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RecruitingNCT04665726Light4DeafUpdated Dec 14, 2020

Natural History Study of Usher Syndrome ( Light4Deaf )

An observational study in Usher Syndromes, sponsored by Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts. Recruiting at 4 sites in France. Per ClinicalTrials.gov, last updated 2020-12-14.

Sponsored by Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts · Observational

From the registry’s dates

  • Primary completion was expected by Jun 2022, 4 years 4 months ago, but the record still lists the study as recruiting.
  • Started Jun 2017; still recruiting 9 years 4 months later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
400
Sex
All
01

Study summary

Clinical centres in the LIGHT4DEAF consortium have developed and will continue to improve a reliable, early molecular diagnosis and protocols for full clinical characterisation of Usher syndrome, which will be valuable for the foreseen USH clinical trials. The clinical arm of the project aims at performing a deep-phenotyping of retinal degeneration, hearing loss, vestibular dysfunction, neurocognitive ability of subects with a molecular diagnosis of any Usher syndrome. Functional and structural parameters for retinal, auditory, and vestibular impairments are followed overtime to document the natural history of the disease and establish relevant clinical endpoint for disease progression that may be useful for future clinical trials.

Read the detailed description

Our cohort study aims at precisely documenting ophthalmic, auditory, vestibular, cogninitive alterations over time with phenotype/genotype correlation Ophthalmological assessment; Best corrected visual acuity, kynetic perimetry, microperimetry, colour contrast sensitivity, retinal multimodal imaging (fundus photograph, fundus autofluorescence, SD-OCT, OCTA, adaptive optics)

ENT assessment:

Tone and voice audiometry, Distortion product otoacoustic emissions Language assessment for children

Vestibular assessment:

Complete assessment of vestibular, canal and otolithic function Neuro-cognitive and visio spatial assessment Genetic: deep-genotyping using next generation sequencing

02

Conditions studied

  • Usher Syndromes

Keywords

  • Usher syndrome,
  • Natural history study for retinal degenetation,
  • Deep-phenotyping,
  • Hearing loss,
  • Vestibular dysfunction
03

In context

Usher Syndromes

34 studies on the registry are indexed under Usher Syndromes; 13 are open to participants now.

This study's planned enrollment of 400 is above the median of 100 across 15 observational studies indexed under Usher Syndromes.

Browse Usher Syndromes studies →

Lead sponsor

Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts is the lead sponsor of 28 studies on the registry; 16 are open to participants now.

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

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Any patient affected with Usher syndrome that has been molecularly confirmed

Inclusion criteria

  • Patient with a molecular diagnosis of Usher syndrome type I, II or III or a clinical diagnosis of Usher syndrome type I, II or III which will then be confirmed by a molecular diagnosis
  • Health insurance beneficiary
  • Informed consent signed by the patient or their legal representatives

Exclusion criteria

Exclusion Criteria:

  • Patient or his/her legal representatives unable to understand the study and for whom informed consent cannot be obtained
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
400 participants (estimated)
Target follow-up
5 Years
Patient registry
Yes
Biospecimen retention
Samples with dna
06

What researchers measure

Primary outcomes

  1. 5-year natural history of Usher syndrome

    Phenotype/genotype correlation, structure function correlation and progression of structural and functional parameters

    Time frame: From date of inclusion until the date of last documented progression , assessed up to 5 years

07

Study locations

4 of 4 sites recruiting
  • Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts
    Paris, 75012, France
    • Isabelle AUDO, PU-PH · Contact · Isabelle Audo <isabelle.audo@inserm.fr> · 01 40 02 14 30
    • Isabelle Audo · Principal investigator
    • José Alain Sahel · Sub investigator
    • Saddek Mohand-Said · Sub investigator
    • Michel Paques · Sub investigator
    • Sarah Mrejen · Sub investigator
    • Raphaël Atia · Sub investigator
    Recruiting
  • CHU Pitié Salpêtrière
    Paris, 75013, France
    • Bahram Bodaghi · Contact · Bahram.bodaghi@aphp.fr
    • Stéphanie Lahouij · Contact · stephanie.lahouij@aphp.fr · 0184827459
    • Bahram Bodaghi · Principal investigator
    • Georges Challe · Sub investigator
    • Isabelle Mosnier · Principal investigator
    • Pascale Diehl Pradat · Principal investigator
    Recruiting
  • CHU Necker
    Paris, 75015, France
    • Natalie Loundon · Contact · natalie.loundon@aphp.fr
    • Sandrine Marlin · Contact · sandrine.marlin@aphp.fr
    • Natalie Loundon · Principal investigator
    • Isabelle Rouillon · Sub investigator
    • Marine Parodi · Sub investigator
    • Marion Blanchard · Sub investigator
    • Sandrine Marlin · Principal investigator
    Recruiting
  • CHU Robert Debré
    Paris, 75019, France
    Recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 14, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04665726
Lead sponsor
Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts
Collaborators
Assistance Publique - Hôpitaux de Paris
Responsible party
Sponsor
First posted
Dec 14, 2020
Start date
Jun 8, 2017
Primary completion
Jun 8, 2022 (estimated)
Completion
Jun 8, 2027 (estimated)
Last update
Dec 14, 2020

Study contacts

Isabelle AUDO, Pr
Contact
isabelle.audo@inserm.fr
0140021430
Thilissa DIB
Contact
tdib@15-20.fr
0140021455
Isabelle AUDO, Pr
principal investigator · Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts

Oversight

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

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