Genetic Study for Eye Conditions like Microphthalmia
Pathogenesis and Genetics of Microphthalmia, Anophthalmia and Uveal Coloboma (MAC)
Recruiting
Observational Study
ColobomaAnophthalmiaMicrophthalmia
No Placebo Group
Every participant receives an active treatment — no one gets a placebo.
No Study Drug
Researchers observe your health over time — no experimental treatment is given.
Ready to participate?
Review the details below, then apply to join this clinical trial.
At a Glance
Age
1 – 100
Sex
Any
Study type
Observational
Participants needed
600 (estimated)
Sponsor
National Eye Institute (NEI) · NIH
Who this trial is looking for
This trial is looking for individuals age 1 and older who have microphthalmia, anophthalmia, or uveal coloboma, or their unaffected family members. Participants will undergo eye exams and provide genetic samples for testing.
Are You a Good Fit for This Trial?
You may be able to join if
I am at least 1 year old
I can have an eye examination
I can provide a blood or saliva sample
I can understand and sign the informed consent
I have microphthalmia, anophthalmia, or uveal coloboma, or
I am a relative of someone with one of these conditions
You may not be able to join if
I am pregnant
I am an employee or subordinate of the study's investigator
Summarized in plain language from this trial's official eligibility criteria.
The full criteria are further down this page — only the research team can
confirm whether you qualify.
Think this trial could be right for you?
Answer a few quick questions to see if you may meet the eligibility requirements.
Background:
\- Uveal coloboma is a condition where the eye does not form normally. It occurs early in the fetus s development during pregnancy. It can lead to different kinds of eye problems, including blindness. Uveal coloboma is part of a spectrum of developmental eye conditions that include anophthalmia and microphthalmia, typically referred to as "MAC". Several genes have been linked to MAC, …
Background:
\- Uveal coloboma is a condition where the eye does not form normally. It occurs early in the fetus s development during pregnancy. It can lead to different kinds of eye problems, including blindness. Uveal coloboma is part of a spectrum of developmental eye conditions that include anophthalmia and microphthalmia, typically referred to as "MAC". Several genes have been linked to MAC, but the cause of most causes are hard to find. Researchers want to study the genes of people who have MAC and genes from their close, unaffected relatives (such as parents and siblings).
Objectives:
\- To study the genes associated with MAC.
Eligibility:
\- Individuals at least 1 years of age who either have MAC or are an unaffected relative (such as a parent or sibling).
Design:
* Participants will have a physical exam and medical history. They will also have a full eye exam.
* Participants with MAC may have other exams, such as imaging studies and hearing assessments.
* All participants will also provide blood, cheek swab or saliva or DNA samples for genetic testing.
Trial Locations
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Eligibility Criteria
* INCLUSION CRITERIA:
* The participant must be one year of age or older.
* The participant must be able to cooperate with an age-appropriate eye examination or be able to provide a copy of a complete eye examination report.
* The participant must be able to provide a blood, buccal/saliva, or DNA sa…
* INCLUSION CRITERIA:
* The participant must be one year of age or older.
* The participant must be able to cooperate with an age-appropriate eye examination or be able to provide a copy of a complete eye examination report.
* The participant must be able to provide a blood, buccal/saliva, or DNA sample.
* The participant must be able to understand and sign this protocol s informed consent form OR have a legally authorized representative (LAR) with the ability to do the same.
* The participant must either:
* a. be affected by MAC(i) OR
* b. be an asymptomatic relative of an affected individual.
(i) Participants will be considered to be affected if they have a clear ocular phenotype related to MAC or if they are deemed affected by other clinical evaluations (e.g., the presence of a unique, systemic manifestation co-segregating with MAC, or a rare or unique kidney finding).
EXCLUSION CRITERIA:
* Female participants who are pregnant are not eligible for enrollment. After giving birth, the female participant and/or a LAR may reach out regarding participation in the study.
* Participants who are NEI employees or subordinates or co-workers of an investigator will be excluded from this study; however, non-NEI NIH employees may enroll in the study.
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