Clinical and Genetic Studies of X-Linked Juvenile Retinoschisis
Public ClinicalTrials.gov record NCT00055029. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
X-Linked Juvenile Retinoschisis - Clinical and Molecular Studies
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This study will explore the causes and eye problems of X-linked juvenile retinoschisis (XLRS), an inherited disease that causes vision loss primarily in young males. The vision loss, which worsens over time, is a result of schisis, or splitting, of the layers of the retina (tissue that lines the back of the eye). A better understanding of why and how XLRS develops might lead to improved treatments. Patients 9 months of age and older with XLRS and females who are suspected carriers of the gene responsible for the disease (such as the mother of the patient) may be eligible for this study. Other family members of patients also may be enrolled. Patients will undergo the following tests and procedures: * Personal and family medical history to review past and current medical conditions and treatments, particularly regarding eye disease, and to construct a family tree. * Eye examination to assess visual acuity (eye chart test) and examine pupils, lens, retina, and eye movements. The pupils will be dilated with drops for this examination. * Photography of the retina to help evaluate the status of the retina. * Specialized eye tests to evaluate color vision, field of vision, and ability to see in the dark. * Electroretinogram (ERG) to examine what happens to the eyes after a flash of bright light. For this test, the patient sits in a dark room for 30 minutes with his or her eyes patched. Then, a small silver disk electrode is taped to the forehead, the eye patches are removed, the surface of the eye is numbed with eye drops and contact lenses are placed on the eyes. The patient looks inside a large empty bowl and then a light flashes, first in the dark and then with a light turned on inside the bowl. The contact lenses sense small electrical signals generated by the retina when the light flashes. * Blood test to examine DNA for genetic study of XLRS. Family members will provide a blood sample for genetic study. ...
Study identification
- NCT ID
- NCT00055029
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 351 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 9 Months to 100 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 18, 2003
- Primary completion
- Not listed
- Completion
- Not listed
- Last update posted
- Aug 31, 2026
Started 2003
United States locations
- U.S. sites
- 2
- U.S. states
- 2
- U.S. cities
- 2
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institutes of Health Clinical Center | Bethesda | Maryland | 20892 | — |
| William Beaumont Hospital | Rochester | Michigan | 48309 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00055029, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Aug 31, 2026 · Synced Sep 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00055029 live on ClinicalTrials.gov.