View clinical trials related to Geographic Atrophy.
Filter by:The purpose of this study is to characterize emixustat hydrochloride pharmacokinetic and pharmacodynamic parameters in subjects with geographic atrophy associated with dry age-related macular degeneration.
The purpose of this study was to compare the development of new geographic atrophy in patients with wet Age-related Macular Degeneration (AMD) when treated with either ranibizumab or aflibercept over 24 months. Geographic atrophy is an advanced form of AMD that can result in the progressive and irreversible loss of visual function over time.
This is a Phase II/III,vehicle controlled, double masked, single center study. A single eye of 60 individuals with mild to moderate non-exudative Age-Related Macular Degeneration (AMD) will be randomly assigned to receive either topical 1% MC-1101 or a vehicle control over 2 years. The study design will assess the efficacy, safety, and tolerability of MC-1101 for these patients. An analysis of the primary and secondary endpoints will be conducted when all subjects have completed Baseline, 1, 3, 6, 12,18 and 24 months.
This study will assess the safety and efficacy of the brimonidine intravitreal implant in participants with geographic atrophy due to age-related macular degeneration.
Age-related macular degeneration (AMD) is the leading cause of irreversible blindness in industrial countries. In the late stages of the disease, neovascular changes or the development of geographic atrophy (GA) may induce severe visual loss. GA is characterized by the development of areas of outer retinal atrophy with continuous spread over time that is corresponded to an visual field defect for the patient. The pathogenesis is still incompletely understood. Despite the break-through in the treatment of neovascular AMD by intravitreally administrated vascular endothelial growths factor (VEGF) inhibitors, there is yet no treatment available to slow down or halt the disease process in GA. We and others have demonstrated that the total GA area progression shows large differences between patients. Potential factors influencing differential progression have been intensely studied: While neither systemic nor genetic factors have been shown to influence GA progression, ocular characteristics such as GA baseline size or phenotypic features of fundus autofluorescence (FAF) abnormalities have been identified as risk characteristics for increased GA progression. While these previous studies have mainly focused on the characterization of total GA area progression, topographic directional spread has not been analyzed and relevant predictive markers are yet unknown. There may be large differences in the local GA progression. The primary objective of this study is to identify specific characteristics, for the local GA progression. The knowledge of such risk factors may help to better understand the pathogenesis of GA. The identification of predictive markers will allow for better prognostic assessment of the individual disease process. The DSGA study is the extension trial of the FAM (Fundus Autofluorescence in Age-related Macular Degeneration) study (NCT00393692).
This study is intended to enable a possible transition to intramuscular (IM) or subcutaneous (SQ) administration for subsequent studies with GSK933776 by characterizing the safety, tolerability, PK and pharmacodynamic profiles, and immunogenicity of GSK933776 following IM and SQ administration in healthy volunteers. Such alternate routes of administration may provide more options in the selection of an efficacious dose for subsequent development in patients with geographic atrophy. There will be four treatment arms in the study and participants will be assigned to 1 of 4 possible treatment arms in a 1:1:1:1 ratio. The planned number of evaluable participants for this study is 24 with 6 participants completing all critical assessments in each of the four treatment arms. The total duration of participation from screening to follow-up for Treatment Arms A, B and D (single dose of GSK933776), will be approximately 113 days and total duration for Treatment Arm C (repeat dose of GSK933776) will be approximately 134 days.
This will be an open-label, non-randomized multi-center study of adipose stem cell (ASC) implantation. ASCs will be derived from the patient's adipose or fat. Liposuction using local anesthesia and syringe collection will be performed to collect the adipose tissue specimen for subsequent processing to isolate the stem cells. The cells will be delivered via needle injection into the eye.
Study to evaluate the safety and tolerability of MC-1101, a potential topical treatment for non-edxudative age Related Macular Degeneration (AMD) in medically stable individuals.
The objective of this study is to determine the repeatability and reproducibility of the Cirrus HD-OCT measurement of illumination areas under the retinal pigment epithelium (RPE).
Studying the morphology and function of the normal and diseased retina in vivo is needed for advancing the detection, diagnosis, and treatment of retinal disease. This protocol uses an adaptive optics scanning laser ophthalmoscope (AOSLO) to image the normal and diseased retina with individual cellular resolution non-invasively. The primary objective of this study is to obtain and analyze high-resolution images of the retina, in particular by imaging the cone photoreceptor mosaic, the retinal vasculature and other retinal layers. The study design will involve case-control studies, where cases are followed over time. Subjects age 7 and older may be invited to participate. The main research procedure involves retinal imaging with the AOSLO. The primary endpoint is the observation of differences in retinal images between subjects with and without retinal diseases. These changes will be quantified by examining the cell density, size, spacing and regularity of the cone photoreceptor mosaic, as well as examining the differences between other retinal layers.