Ignite Creation Date:
2024-05-05 @ 4:56 PM
Last Modification Date:
2024-10-26 @ 9:26 AM
Study NCT ID:
NCT00357435
Status:
COMPLETED
Last Update Posted:
2019-12-12
First Post:
2006-07-26
Brief Title:
Studies in Families With Corneal Dystrophy or Other Inherited Corneal Diseases
Sponsor:
National Eye Institute NEI
Organization:
National Institutes of Health Clinical Center CC
Study Overview
Official Title:
Clinical and Molecular Studies in Families With Corneal Dystrophy or Other Inherited Corneal Diseases
Status:
COMPLETED
Status Verified Date:
2016-07-21
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
This study will explore the clinical and hereditary genetic features of corneal dystrophy and other inherited corneal disease Corneal dystrophy is clouding of the cornea - the transparent part of the eye covering the iris and pupil that passes light to the back of the eye When the cornea becomes cloudy interfering with the passage of light vision may be impaired or lost Corneal problems may occur with vision problems alone or with other problems such as changes in facial appearance or bone or joint problems A better understanding of these genetic conditions may help in the development of better diagnostic tests and methods of disease management
Patients with corneal dystrophies and related corneal disease and their family members may be eligible for this study Participants will be drawn from patients enrolled in other studies of corneal dystrophy at the NEI and collaborating clinics
Participants will undergo the following tests and procedures
Medical and surgical history
Verification of diagnosis
Construction of a family tree regarding familial vision problems
Complete eye examination including dilation of the pupils and photography of the cornea tests of color vision field of vision and the ability to see in the dark and photographs of the eye
Blood sample collection to identify the genes responsible for corneal disease and ascertain how they cause disease
Patients with corneal dystrophies and related corneal disease and their family members may be eligible for this study Participants will be drawn from patients enrolled in other studies of corneal dystrophy at the NEI and collaborating clinics
Participants will undergo the following tests and procedures
Medical and surgical history
Verification of diagnosis
Construction of a family tree regarding familial vision problems
Complete eye examination including dilation of the pupils and photography of the cornea tests of color vision field of vision and the ability to see in the dark and photographs of the eye
Blood sample collection to identify the genes responsible for corneal disease and ascertain how they cause disease
Detailed Description:
Objective This project Clinical and Molecular Studies in Families With Corneal Dystrophy or Other Inherited Corneal Diseases will study the inheritance of corneal dystrophy and other inherited corneal diseases both Mendelian and complex in order to identify the genes that when mutated cause corneal disease and the pathophysiology through which they act
Study Population Families of many nationalities and ethnic backgrounds We will study a maximum or 2000 patients and family members
Design The study consists of ascertaining individuals and especially families with multiple individuals affected by corneal dystrophy and other inherited corneal diseases These patients and their families will undergo detailed ophthalmological examinations to characterize their corneal disease and determine their affectation status A blood sample will be collected from each individual for isolation of DNA and in some individuals for lymphoblastoid transformation to establish a renewable source of DNA Linkage analysis physical mapping and mutational screening will be carried out to identify the specific the gene and the mutations in it that are associated with corneal disease in this family If necessary the gene product will be characterized biochemically All associate investigators will carry out patient ascertainment diagnosis and sample referral and in some cases molecular genetic analyses The study will enroll subjects at NEI and collaborating institutions
Outcome Measures Linkage will be determined using the lod score method and mutations in specific genes will be assessed using a combination of residue conservation blosum score and molecular modeling Biochemical metabolic and physiological effects will be individualized to the specific assay
Study Population Families of many nationalities and ethnic backgrounds We will study a maximum or 2000 patients and family members
Design The study consists of ascertaining individuals and especially families with multiple individuals affected by corneal dystrophy and other inherited corneal diseases These patients and their families will undergo detailed ophthalmological examinations to characterize their corneal disease and determine their affectation status A blood sample will be collected from each individual for isolation of DNA and in some individuals for lymphoblastoid transformation to establish a renewable source of DNA Linkage analysis physical mapping and mutational screening will be carried out to identify the specific the gene and the mutations in it that are associated with corneal disease in this family If necessary the gene product will be characterized biochemically All associate investigators will carry out patient ascertainment diagnosis and sample referral and in some cases molecular genetic analyses The study will enroll subjects at NEI and collaborating institutions
Outcome Measures Linkage will be determined using the lod score method and mutations in specific genes will be assessed using a combination of residue conservation blosum score and molecular modeling Biochemical metabolic and physiological effects will be individualized to the specific assay
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None
Secondary IDs
| Secondary ID | Type | Domain | Link |
|---|---|---|---|
| 04-EI-0008 | None | None | None |