View clinical trials related to Usher Syndromes.
Filter by:The objective of the study is to collect adaptive optics (AO) retinal images from human subjects with outer retinal diseases (diseases of the outer retina including photoreceptor, retinal pigment epithelium (RPE), basement membrane or choroidal pathologies) to develop new diagnostic methods, biomarkers, and clinical endpoints.
Usher syndrome (USH) causes extensive degeneration in the cochlear nerve (CN), especially in CN fibers innervating the base of the cochlea. As the first step toward developing evidence-based practice for managing implant patients with USH, this study evaluates local neural health, as well as the neural encoding of temporal and spectral cues at the CN in implanted patients with USH. Aim 1 will determine local CN health in patients with USH by assessing the sensitivity of the electrically evoked compound action potential to changes in interphase gap and pulse polarity. Aim 2 will determine group differences in neural encoding of temporal and spectral cues at the CN between patients with USH and patients with idiopathic hearing loss. Aim 3 will use supervised machine learning techniques to develop an objective tool for assessing the electrode-neuron interface at individual electrode locations.
Clinical centres in the LIGHT4DEAF consortium have developed and will continue to improve a reliable, early molecular diagnosis and protocols for full clinical characterisation of Usher syndrome, which will be valuable for the foreseen USH clinical trials. The clinical arm of the project aims at performing a deep-phenotyping of retinal degeneration, hearing loss, vestibular dysfunction, neurocognitive ability of subects with a molecular diagnosis of any Usher syndrome. Functional and structural parameters for retinal, auditory, and vestibular impairments are followed overtime to document the natural history of the disease and establish relevant clinical endpoint for disease progression that may be useful for future clinical trials.
Patients with retina dystrophies (retinitis pigmentosa, cone>rods dystrophies, Usher and syndromic) will be correlated with genotype and validate inheritance mode by segregation analysis.
The objective of the study is to evaluate the natural progression of disease over time in USHIB patients
The My Retina Tracker® Registry is sponsored by the Foundation Fighting Blindness and is for people affected by one of the rare inherited retinal degenerative diseases studied by the Foundation. It is a patient-initiated registry accessible via a secure on-line portal at www.MyRetinaTracker.org. Affected individuals who register are guided to create a profile that captures their perspective on their retinal disease and its progress; family history; genetic testing results; preventive measures; general health and interest in participation in research studies. The participants may also choose to ask their clinician to add clinical measurements and results at each clinical visit. Participants are urged to update the information regularly to create longitudinal records of their disease, from their own perspective, and their clinical progress. The overall goals of the Registry are: to better understand the diversity within the inherited retinal degenerative diseases; to understand the prevalence of the different diseases and gene variants; to assist in the establishment of genotype-phenotype relationships; to help understand the natural history of the diseases; to help accelerate research and development of clinical trials for treatments; and to provide a tool to investigators that can assist with recruitment for research studies and clinical trials.
This study aims to characterize Usher patients in order to correlate this data with genetic information. Tasks: - Standardization and improvement of Usher syndrome diagnosis: refine and elaborate special tests of visual and otological function in association with genotype that enable to determine the most significant markers for Usher disease progression and therapeutic effect. - Perform genotype and phenotype correlations in Usher syndrome patients - Develop and maintain database for phenotypically and genotypically well-characterized patient cohorts, suitable for future therapeutic trials