Potential Environmental Causes of Uveal Coloboma
Pilot Evaluation of Potential Environmental Causes of Uveal Coloboma
Background:
Uveal coloboma is a congenital eye malformation. It is thought to be a genetic condition. But it might have environmental causes as well. Researchers want to study the mothers of children with coloboma. They will use parts of the National Birth Defects Prevention Study (NBDPS) Mother Questionnaire. NBDPS was a large study of birth defects. It collected data from 1997 to 2011. Researchers will use NBDPS and NIH data as well as the new survey to produce data that can serve as a basis for further study.
Objective:
To explore maternal factors and exposures during the first trimester of pregnancy as potential causes of uveal coloboma and to correlate exposure data to clinical data from affected children.
Eligibility:
Mothers of probands with coloboma who have taken part in NIH study 06-EI-0230, 04-EI-0039, or 13-EI-0049.
Design:
This is a hybrid study. It will use existing data from NBDPS and NIH studies. It will also use NBDPS for a new survey of mothers of children with coloboma.
Participants will take the survey by phone. Their pregnancy records may be reviewed. They will be asked about:
Important dates
Health and medicines
Tobacco, alcohol, and substance use
Parents occupations
Family demographics.
The survey will take 1 hour or less to complete.
Some data were obtained in past NIH studies. These data are largely from children. Some family data may be used as well. For example, eye exam data, gene test results, and family history of coloboma may be used. If a participant did not consent to the future use of their data, then their data will not be used.
Data will be stored in a secure NIH database.
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Study Overview
Status
Conditions
Detailed Description
Study Description:
This evaluation of potential environmental causes of coloboma explores the experiences of a large cohort of mothers of children with uveal coloboma using portions of the National Birth Defects Prevention Study (NBDPS) Mother Questionnaire. It is postulated that maternal hypothyroidism and in utero alcohol exposure are found at higher rates in this cohort than in rates found in the general population. The goal is to produce descriptive statistic that could serve as a basis for further epidemiologic studies.
Objectives:
The primary objective is to explore maternal factors and exposures during the first trimester of pregnancy as potential causes of uveal coloboma and to correlate these exposures with the clinical presentation of the affected child/children.
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Locations
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Maryland
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Bethesda, Maryland, United States, 20892
- National Eye Institute (NEI)
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
- INCLUSION CRITERIA:
- mothers of probands with coloboma that have previously been consented to an NIH protocol studying coloboma.
Study Plan
How is the study designed?
Design Details
- Observational Models: Family-Based
- Time Perspectives: Other
Cohorts and Interventions
Group / Cohort |
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Mothers
Mothers of children with coloboma.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
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% of participants with x exposure compared to historical data
Time Frame: ongoing
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% of participants with x exposure compared to historical data from NBDPS study.
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ongoing
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Brian P Brooks, M.D., National Eye Institute (NEI)
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 10000366
- 000366-EI
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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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