AMD Phenotype and Genotype Study

April 4, 2018 updated by: National Eye Institute (NEI)

AMD Phenotype and Genotype Study (APGS)

Background:

- Age-related macular degeneration (AMD) is a disease that blurs the sharp vision needed for activities such as reading, sewing, and driving. It affects the macula, the center of the retina at the back of the eye, which allows a person to see fine detail. Researchers want to collect medical histories, eye exam data, and genetic information that may be associated with AMD. They want to compare this information with information collected from people without AMD.

Objectives:

- To collect medical information and gene samples for researchers studying AMD.

Eligibility:

  • Individuals between and 60 and 90 years of age who have AMD in at least one eye.
  • Individuals between and 60 and 90 years of age who have no AMD in either eye.

Design:

  • This study will involve one study visit. This study visit will last 6 to 8 hours.
  • Participants will have the following tests and exams as part of their study visit:
  • Full physical exam and medical history
  • Full eye examination
  • Laser scan of the eye
  • Retina function test
  • Vision sensitivity test
  • Optional blood sample (for genetic study)
  • No treatment will be provided as part of this study.

Study Overview

Status

Completed

Conditions

Detailed Description

Objective: Late age-related macular degeneration (AMD) is the leading cause of blindness among elderly in the United States. At present the current classification systems do not take into consideration advances in imaging technology and genotyping and phenotyping.

Clinical centers in the US and around the world will conduct a pilot cohort study that will bring together resources and commitment to test the feasibility of developing a new classification scheme for AMD using imaging and visual function biomarkers, with the potential of correlating genetic information obtained in the future. These data could eventually help develop an understanding of the mechanisms involved in the development and progression of AMD. A database of men and women with and without AMD will be established and maintained. The project will recruit participants who have various stages of AMD and controls. The pilot study will identify the feasibility of obtaining imaging and visual function data and help identify which of these modalities should be included in a full scale longitudinal study, as well as how frequently and at which sites they should be obtained. All data, images and any potential biospecimens from the full scale longitudinal study will be available to researchers worldwide to help in the development of biomarker identification and classification development. The initiative should provide an unparalleled state-of-the-art standardized phenotype/genotype including AMD status with information on imaging, visual function, and biospecimen biomarkers. This study is the first phase of this initiative to test the feasibility and logistics of defining a standard database including enhanced phenotype and genotype data.

Study Population: This cohort study will recruit a minimum of 200 total participants with various stages of AMD, including controls and obtain the appropriate images and measures of visual function needed for the investigation and validation of an AMD phenotype.

Design: This cohort study is a multi-national, multi-center, observational study focused on AMD. The study is a pilot to test the ability to create an archive of data, biological samples (collected at other study sites), measures of visual function and ophthalmic images collected over time from a very well clinically characterized population of participants with a diagnosis of AMD. The database will also include a control group consisting of participants without a diagnosis of AMD.

Outcome Measures: The design of this cohort study and the data being collected will allow users to assess phenotypes of AMD, develop and evaluate potential markers and risk factors, develop and evaluate an AMD classification scheme(s), and assess the progression of the disease and investigate factors that shape it. It is not practical to anticipate all of the potential uses of the data, or all the types of analyses that will be performed to address user-defined questions.

Study Type

Observational

Enrollment (Actual)

344

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Germany
      • Bonn, Germany
        • University of Bonn
  • United States
    • Maryland
      • Bethesda, Maryland, United States, 20892
        • National Institutes of Health Clinical Center, 9000 Rockville Pike

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

60 years to 90 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

  • INCLUSION CRITERIA:

To be eligible, the following inclusion criteria must be met, where applicable.

-Male or female participants must fall into any of the following categories:

  • No drusen or any AMD-associated pigment abnormalities (no apparent aging changes)
  • Small drusen (less than or equal to 63 micro millimeters in diameter) and the absence of AMD-associated pigment abnormalities in either eye (normal aging changes)
  • Medium (>63 (Micro)m and less than or equal to 125 micro millimeters in diameter) drusen in either eye (Early AMD)
  • Large (>125 (Micro)m in diameter) drusen with or without pigmentary abnormalities in either eye (Intermediate AMD)
  • Neovascular AMD in only one eye or the presence of geographic atrophy in either eye but with vision >20/60 in the better-seeing eye (Late AMD)
  • Presence of reticular Drusen in either eye

AMD classification will be based on clinical evaluation.

  • 60 years of age or older
  • Ability to provide written informed consent and comply with study assessments for the full duration of the study
  • Retinal photographs of sufficient quality to allow assessment of the macular area for AMD lesions including drusen

EXCLUSION CRITERIA:

A participant is not eligible if any of the following exclusion criteria are present:

  • Presence of lens or vitreous opacity in eye(s) with AMD to preclude adequate ophthalmic imaging
  • Presence of ocular conditions that may now or in the future complicate the evaluation of AMD [e.g., vascular occlusion, diabetic retinopathy (>4 microaneurysms), etc.] in the eye(s) with AMD
  • High myopia -6 Diopters or more severe
  • Diagnosis of nystagmus
  • Glaucoma with definite visual field defects. Participants with a history of the diagnosis of glaucoma, past or present use of medications to control intraocular pressure, or disc/nerve fiber layer defects suggestive of glaucoma can be eligible for the study if they have a documented normal Goldmann, Humphrey, or Octopus perimetry test within 6 months prior to qualification.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Allow users to assess phenotypes of AMD
Time Frame: 5 years
5 years
Develop and evaluate potential markers and risk
Time Frame: 5 years
5 years
Develop and evaluate an AMD classification scheme(s)
Time Frame: 5 years
5 years
Assess the progression of the disease and investigate that shape it.
Time Frame: 5 years
5 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Eye Institute (NEI)

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 5, 2012

Primary Completion (Actual)

September 29, 2015

Study Completion (Actual)

September 29, 2015

Study Registration Dates

First Submitted

January 26, 2013

First Submitted That Met QC Criteria

January 26, 2013

First Posted (Estimate)

January 29, 2013

Study Record Updates

Last Update Posted (Actual)

April 5, 2018

Last Update Submitted That Met QC Criteria

April 4, 2018

Last Verified

September 29, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 130027
  • 13-EI-0027

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.

Clinical Trials on Age-Related Macular Degeneration

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Uganda

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe