View clinical trials related to Macular Degeneration.
Filter by:The purpose of this study is to determine the effectiveness and safety of triamcinolone acetonide in patients with serous pigment detachment associated with age-related macular degeneration
Age-related macular degeneration is a chronic degenerative retinal disease, which can lead to a progressive loss of visual acuity without affecting peripheral vision. It is a public health problem as it remains the leading cause of visual impairment in people over 50 years of age in industrialized countries. Age-related macular degeneration has two clinical forms: - Atrophic or dry form: progressive disappearance of photoreceptors, alteration of the pigmentary epithelium leading to a thinning of the macula. - Exudative or humid form: development of immature choroidal neo-vessels, leading to the formation of edema or intra or sub-retinal hemorrhage at the origin of the symptoms. There are still many questions about the pathogenesis of age-related macular degeneration, and there is currently no etiological treatment. The disorder is thought to have a multifactorial, genetic and environmental origin. Among the environmental risk factors, dietary intake of omega-3 polyunsaturated acids and its effect on the retina are factors that influence both the incidence and progression of the disease. However, intervention studies have not been able to demonstrate the preventive value of omega-3 polyunsaturated fatty acids. It is likely that the precise identification of patients who could benefit from this supplementation is necessary. Currently, the estimation of dietary intake of omega-3 polyunsaturated fatty acids is based on dietary surveys, which implies a number of limits. A blood biomarker of omega-3 polyunsaturated fatty acid content in the retina has been previously identified, which if lowered may be a risk factor for age-related macular degeneration. A low level could also help to identify patients who would best respond to supplementation. A publication has been submitted and a patent has been filed for this biomarker. The objective of this project is to confirm the relationship between this biomarker and the presence of age-related macular degeneration. The analysis will be refined by correlating the discriminating character of the biomarker with factors that may influence the intestinal metabolism of dietary lipids and their bioavailability in the blood. For this purpose, the status of the subjects with regard to their intestinal flora (microbiota) will be evaluated. The relationship between lipid metabolism, microbiota and age-related macular degeneration should also provide a better understanding of the pathophysiological mechanisms that link diet, lipid metabolism and age-related macular degeneration.
The purpose of this study is to compare the efficacy and safety of ABP 938 versus Aflibercept (Eylea®) in the treatment of neovascular age-related macular degeneration. Subjects will be randomized in a masked 1:1 ratio to receive 2 mg (0.05 mL) of either ABP 938 (Treatment Group A) or aflibercept (Treatment Group B) administered by intravitreal (IVT) injection.
This is a non-randomized, open-label, multicenter, 48-week study to investigate the efficacy, safety and pharmacokinetics of RC28-E injection in the treatment of patients with wet age-related macular degeneration by multiple administration.
Neovascular age-related macular degeneration is characterized by the presence of choroidal neovascularization (CNV), which consists of abnormal blood vessels originating from the choroid that can lead to hemorrhage, fluid exudation, and fibrosis, resulting in photoreceptor damage and vision loss. The safety and efficacy of brolucizumab were assessed in 2 randomized, multicenter, double-masked, active treatment-controlled Phase 3 studies in nAMD patients (the HAWK study (RTH258-C001 [NCT02307682]) and the HARRIER study (RTH258-C002 [NCT02434328]). Accordingly, a new Phase 3b study (TALON, CRTH258A2303) is being conducted to evaluate the efficacy and safety of brolucizumab in a Treat-to-Control (TtC) regimen for the treatment of naïve patients with nAMD. In this TtC regimen, patients receive 3 consecutive injections every 4 weeks and then the injection interval is extended by 4 weeks up to a maximum of a 16-week interval. The decision to extend or reduce the injection interval is taken by the Investigator at each visit based on his/her judgment of disease activity, according to the patient visual and/or anatomic outcomes. If there is no disease activity, the injection interval can be extended by 4 weeks ; if disease activity occurs or recurs, the injection interval should be shortened accordingly by 4 weeks at a time or to a minimal interval of 8 weeks. The injection interval can also be maintained if the Investigator deems that the patient do not benefit from injection interval adjustment. Since all these studies were conducted in a naïve nAMD patient population, no data are available on the efficacy and safety of brolucizumab in pretreated nAMD patients who still present active exudation.
The study is designed to identify the maximum tolerated dose (MTD) for intravitreal (IVT) administration of GEM103 in subjects with geographic atrophy (GA) secondary to dry AMD. Safety and tolerability of a single dose of GEM103 will be assessed based on the occurrence of dose-limiting toxicities (DLTs). Each subject will be followed for safety, pharmacokinetic (PK), clinical, and biomarker evaluations. Three escalating dose cohorts are planned.
The global aim of this project is to expand the knowledge on the multifactorial pathogenesis of AMD. In addition to age, the multifactorial pathogenesis of AMD includes environmental and genetic risk factors. However, how these interact to promote progression remains largely unknown. AMD is a progressive retinal disease characterized by mostly asymptomatic early phases and progression to potentially blinding late forms (choroidal neovascularization or geographic atrophy). Individuals vary in their rate of progression, with some remaining stable for years. The reasons behind this variability, as well as the triggers and mechanisms of AMD progression, are not well understood. Currently, the standard of care for assessment of the risk of progression is solely based on fundus appearance, and is limited in its prediction ability. Our previous work showed that metabolomics enables the identification of specific plasma metabolomic profiles in AMD, which vary with the severity stages. The investigators hypothesize that the plasma and urinary metabolomic profile of subjects who progress over a five-year period (progressors) is distinct from those who remain at the same AMD severity stage (non-progressors). In this proposal, the investigators will follow our existing cohort over five years, comparing the metabolomic profiles of progressors to non-progressors.
Neovascular age-related macular degeneration (nAMD) is characterized by the presence of choroidal neovascularization (CNV). Choroidal neovascularization consists of abnormal blood vessels originating from the choroid and can lead to hemorrhage, fluid exudation, and fibrosis, resulting in photoreceptor damage and vision loss. The safety and efficacy of brolucizumab has been demonstrated in 2 randomized, multicenter, double-masked, active controlled Phase 3 studies in nAMD patients (RTH258-C001 and RTH258-C002). Anatomical changes were evaluated in these studies using spectral domain optical coherence tomography (SD-OCT), which relied on indirect parameters for the diagnosis of active CNV. The OCT-angiography (OCT A) that directly visualize retinal circulation and image CNV and vascular diseases of the retina was not included in previous brolucizumab studies. This single-arm, open-label, multicenter study was performed to evaluate the efficacy and safety of brolucizumab 6 mg in patients with nAMD. OCT-A was used in this study to assess the morphological response of patients to brolucizumab in terms of percentage change in CNV lesion area in the short term (i.e. at Week 12) and in the long term (i.e. at Week 48), as well as changes in other OCT-A features up to Week 48.
This is a multicenter, active-controlled, double masked study assessing the safety, efficacy and durability of four monthly intravitreal (IVT) injections of RBM-007 monotherapy, and four monthly RBM-007 injections in combination with Eylea® dosed at every other month, compared to Eylea® monotherapy dosed at every other month in approximately eighty-one subjects with exudative age-related macular degeneration (AMD).
By using the ultrasound power delivered by fragmatome, the hard, organized blood clot could be removed easily.