Clinical and Genetic Studies of X-Linked Juvenile Retinoschisis
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ClinicalTrials.gov Identifier: NCT00055029 |
Recruitment Status :
Recruiting
First Posted : February 17, 2003
Last Update Posted : May 28, 2024
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Tracking Information | |||||||||
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First Submitted Date | February 15, 2003 | ||||||||
First Posted Date | February 17, 2003 | ||||||||
Last Update Posted Date | May 28, 2024 | ||||||||
Actual Study Start Date | May 19, 2003 | ||||||||
Primary Completion Date | Not Provided | ||||||||
Current Primary Outcome Measures |
The primary outcome is the categorization of the proband's genotype and phenotype and determination of the relationship between the two. [ Time Frame: ongoing ] The primary outcome is the categorization of the proband's genotype and phenotype and determination of the relationship between the two.
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Original Primary Outcome Measures | Not Provided | ||||||||
Change History | |||||||||
Current Secondary Outcome Measures | Not Provided | ||||||||
Original Secondary Outcome Measures | Not Provided | ||||||||
Current Other Pre-specified Outcome Measures | Not Provided | ||||||||
Original Other Pre-specified Outcome Measures | Not Provided | ||||||||
Descriptive Information | |||||||||
Brief Title | Clinical and Genetic Studies of X-Linked Juvenile Retinoschisis | ||||||||
Official Title | X-Linked Juvenile Retinoschisis - Clinical and Molecular Studies | ||||||||
Brief Summary | 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:
Family members will provide a blood sample for genetic study. ... |
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Detailed Description | Objectives: The overall goal of this protocol is to better understand the etiology of XLRS disease to facilitate further research to identify a potential treatment for the disease. The specific primary objectives of this study are to:
With the opportunity to study the genotypes and phenotypes of many affected males and the genotype of family members, a secondary objective of this study will be to develop a detailed pedigree for affected families. This information may be used to develop preliminary risk estimates for potential carrier females. Study Population: Up to 500 participants may enroll in this study. A minimum of 150 of participants are expected to be males diagnosed with X-Linked Retinoschisis. Participants may be recruited from the NIH and also from participating off-site locations. The quality of the genetic observation is directly proportional to the number of affected individuals and genetically-different families enrolled. Design: This natural history, multi-center, registry study to enroll males diagnosed with X-Linked Retinoschisis and the family members of affected individuals. Onsite affected males will undergo clinical examination and have their blood drawn for genotyping. Onsite unaffected participants will undergo eye examinations. Blood may also be drawn from the onsite unaffected participants but this is not required. Sites outside of NIH are participating as referral centers to accumulate the cohort. Offsite affected male participants will forward a blood sample and records from previous eye examinations to the NEI for review and analysis. Offsite unaffected participants will forward records from previous eye examinations and may provide a blood sample although this is not required. Outcome Measures: The primary outcome is the categorization of the proband s genotype and phenotype and determination of the relationship between the two. |
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Study Type | Observational | ||||||||
Study Design | Observational Model: Cohort Time Perspective: Prospective |
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Target Follow-Up Duration | Not Provided | ||||||||
Biospecimen | Not Provided | ||||||||
Sampling Method | Non-Probability Sample | ||||||||
Study Population | Up to 500 participants may enroll in this study. A minimum of 150 of participants are expected to be males diagnosed with X-Linked Retinoschisis. Participants may be recruited from the NIH and also from participating off-site locations. | ||||||||
Condition | Retinoschisis | ||||||||
Intervention | Not Provided | ||||||||
Study Groups/Cohorts | Affected males and family members
Up to 500 participants, including a minimum of 150 males diagnosed with XLRS
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Publications * | Not Provided | ||||||||
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. |
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Recruitment Information | |||||||||
Recruitment Status | Recruiting | ||||||||
Estimated Enrollment |
500 | ||||||||
Original Enrollment | Same as current | ||||||||
Study Completion Date | Not Provided | ||||||||
Primary Completion Date | Not Provided | ||||||||
Eligibility Criteria |
Eligible participants must satisfy one of the criteria below:
The participant (or the participant s legal guardian) understands and signs this protocol s informed consent document and minor participants between the ages of 7 and 17 must provide assent. EXCLUSION CRITERIA: Affected males will be ineligible for participation if:
Both affected and unaffected individuals will be ineligible for participation if:
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Sex/Gender |
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Ages | 9 Months and older (Child, Adult, Older Adult) | ||||||||
Accepts Healthy Volunteers | No | ||||||||
Contacts |
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Listed Location Countries | United States | ||||||||
Removed Location Countries | |||||||||
Administrative Information | |||||||||
NCT Number | NCT00055029 | ||||||||
Other Study ID Numbers | 030033 03-EI-0033 |
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Has Data Monitoring Committee | Not Provided | ||||||||
U.S. FDA-regulated Product |
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IPD Sharing Statement | Not Provided | ||||||||
Current Responsible Party | National Institutes of Health Clinical Center (CC) ( National Eye Institute (NEI) ) | ||||||||
Original Responsible Party | Not Provided | ||||||||
Current Study Sponsor | National Eye Institute (NEI) | ||||||||
Original Study Sponsor | Same as current | ||||||||
Collaborators | Not Provided | ||||||||
Investigators |
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PRS Account | National Institutes of Health Clinical Center (CC) | ||||||||
Verification Date | May 13, 2024 |