# A Genetic Analysis of Usher Syndrome in Ashkenazi Jews

> **NCT00016471** · — · COMPLETED · sponsor: **National Center for Research Resources (NCRR)**

## Conditions studied

- Usher Syndrome
- Retinitis Pigmentosa
- Congenital Hearing Impairment

## Interventions

- **PROCEDURE:** Audiogram
- **PROCEDURE:** Electroretinogram

## Key facts

- **NCT ID:** NCT00016471
- **Lead sponsor:** National Center for Research Resources (NCRR)
- **Sponsor class:** NIH
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2001-03
- **Primary completion:** —
- **Final completion:** 2002-02
- **Target enrollment:** — (—)
- **Last updated:** 2005-06-24


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00016471

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00016471, "A Genetic Analysis of Usher Syndrome in Ashkenazi Jews". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT00016471. Licensed CC0.

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