Potential Environmental Causes of Uveal Coloboma
Public ClinicalTrials.gov record NCT04833361. 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
Pilot Evaluation of Potential Environmental Causes of Uveal Coloboma
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
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. ...
Study identification
- NCT ID
- NCT04833361
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 87 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years to 100 Years
- Sex
- Female
- 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
- Jun 19, 2023
- Primary completion
- Mar 16, 2025
- Completion
- Mar 16, 2025
- Last update posted
- Sep 9, 2026
2023 – 2025
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Eye Institute (NEI) | Bethesda | Maryland | 20892 | — |
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 NCT04833361, 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 Sep 9, 2026 · Synced Sep 11, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04833361 live on ClinicalTrials.gov.