- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00016471
A Genetic Analysis of Usher Syndrome in Ashkenazi Jews
Hearing loss and loss of vision can be very harmful to the well-being and life of people who suffer from them. Usher syndrome is the name of a disease where people have both hearing loss and visual loss. In fact more than half of people who are deaf and blind have Usher syndrome. In this study we are trying to find the causes of all types of Usher syndrome and to learn more about how the eyes and ears work. Usher syndrome is caused by changes in our genes that lead to mistakes in the functioning of our eyes and ears.
We may conduct hearing tests called audiograms to test hearing and a vision test called an electroretinogram (ERG) to test how well the retina (the part of your eye that senses light) is working on participants in the study. From these tests we can tell what kind of Usher syndrome a participant may have.
We will then get DNA from participants by drawing blood. The DNA will be studied, along with DNA from members of the participant's family and other families, to try to find the gene that is causing Usher syndrome in the participant.
Once the gene is found we will be able to study it to learn more about how the eyes and ears work.
If a subject has already been diagnosed we may just need copies of their medical records and blood can be drawn locally.
In order to increase the power of the study and the likelihood of detecting relevant genes participants will be taken from the Ashkenazi Jewish population group only. This will make it much easier to find the genes.
Study Overview
Status
Intervention / Treatment
Study Type
Contacts and Locations
Study Locations
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New York
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New York, New York, United States, 10029
- Mount Sinai School of Medicine
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion criteria:
Any Ashkenazi Jewish individual with combined hearing and visual loss that is or may be any type of Usher syndrome, or a family member of said individual.
Exclusion criteria:
Any individual who is not an Ashkenazi Jew or does not have combined hearing and visual loss or whose disease has been previously determined not to be Usher syndrome.
Study Plan
How is the study designed?
Design Details
- Observational Models: Defined Population
Collaborators and Investigators
Publications and helpful links
General Publications
- Ness SL, Ben-Yosef T, Bar-Lev A, Madeo AC, Brewer CC, Avraham KB, Kornreich R, Desnick RJ, Willner JP, Friedman TB, Griffith AJ. Genetic homogeneity and phenotypic variability among Ashkenazi Jews with Usher syndrome type III. J Med Genet. 2003 Oct;40(10):767-72. doi: 10.1136/jmg.40.10.767. No abstract available.
- Ben-Yosef T, Ness SL, Madeo AC, Bar-Lev A, Wolfman JH, Ahmed ZM, Desnick RJ, Willner JP, Avraham KB, Ostrer H, Oddoux C, Griffith AJ, Friedman TB. A mutation of PCDH15 among Ashkenazi Jews with the type 1 Usher syndrome. N Engl J Med. 2003 Apr 24;348(17):1664-70. doi: 10.1056/NEJMoa021502. No abstract available.
Study record dates
Study Major Dates
Study Start
Primary Completion
Study Completion
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Pathologic Processes
- Nervous System Diseases
- Eye Diseases
- Neurologic Manifestations
- Disease
- Congenital Abnormalities
- Retinal Degeneration
- Retinal Diseases
- Genetic Diseases, Inborn
- Otorhinolaryngologic Diseases
- Ear Diseases
- Eye Diseases, Hereditary
- Retinal Dystrophies
- Sensation Disorders
- Abnormalities, Multiple
- Hearing Disorders
- Vision Disorders
- Deaf-Blind Disorders
- Hearing Loss, Sensorineural
- Blindness
- Syndrome
- Retinitis
- Retinitis Pigmentosa
- Hearing Loss
- Deafness
- Usher Syndromes
Other Study ID Numbers
- NCRR-M01RR00071-0374
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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