Active clinical trials for "Geographic Atrophy"

An observational study to evaluate different biomarkers of subjects with geographic atrophy secondary to age-related macular degeneration

The purpose of this study is to evaluate the long-term safety and durability of GT005 in participants with Geographic Atrophy (GA) secondary to AMD who have been treated in an antecedent study.

Background: Age-related macular degeneration (AMD) affects the macula in the eye. This is the central part of the retina. It is needed for sharp, clear vision and activities like reading and driving. AMD is the leading cause of vision loss in Americans 60 years of age and older. An advanced form of AMD is called geographic atrophy or GA. It happens when light-sensitive cells in the macula die so much that central vision decreases. Objective: To learn more about geographic atrophy associated with age-related macular degeneration. Eligibility: Adults at least 55 years old with a certain kind of GA. They must be enrolled in study 08-EI-0102, 08-EI-0169, 08-EI-0043, 12-EI-0042, or 11-EI-0147 but no other studies. Design: Participants will be screened with medical history, physical exam, and an eye exam. Participants will have study visits every 3 months for 15 months, then every 6 months. They will be in the study almost 4 years. Visits will last about 8 hours. At each visit, participants may have: Medical and eye history. Participants will answer questions about their general health and eye health. They may answer written questions about how their eye problems affect their life. Eye exam and photographs. Eye pressure will be measured and eye movements will be checked. Pupils will be dilated with drops. The thickness of the retina will be measured and photos of the eye may be taken....

The investigators wish to better understand the role of the choriocapillaris (CC) in the formation and progression of non-exudative in age related macular degeneration (armd) by imaging the retinal pigment epithelium (rpe) and the choroidal microvasculature and by studying their inter-dependence to determine if the loss of the CC could prove useful as an anatomic clinical trial endpoint in future drug trials.

Age-related macular degeneration (AMD) is the leading cause of irreversible vision loss worldwide, and nearly two million Australians have some signs of AMD. This proposed project is a prospective, observational study that seeks to to understand the underlying aetiology of AMD, factors associated with differences between age-related macular degeneration (AMD) phenotypes or severities, or between AMD and healthy individuals. It also seeks to understand the natural history of AMD progression and the factors associated with the rate of progression. In this project, the disease phenotype, genotype and severity and rate of progression will be determined based on non-invasive clinical imaging or functional assessment of the retina, from obtaining biological samples from the participants, or from patient-reported outcomes.

The purpose of this study is to evaluate the long-term safety and tolerability of intravitreal (ITV) injections of galegenimab (FHTR2163) administered every 4 weeks (Q4W) or every 8 weeks (Q8W) in participants with geographic atrophy (GA) secondary to age-related macular degeneration (AMD) who completed the parent study (NCT03972709/GR40973).

This study will seek to enroll 50 persons who have central or non-central geographic atrophy (GA) associated with age-related macular degeneration (AMD). GA in treated eye must be between 0.75 disk areas (DA) and 8 DA. Eligible participants will be randomly chosen to receive one of the following treatments in the study eye: A 20 μL (440 μg) intravitreal (IVT) injection of sirolimus, or A sham treatment (subconjunctival injection of lidocaine) Participants with two (2) eligible eyes will have one eye randomly assigned to receive intravitreal sirolimus and no sham in the fellow eye. The first injection will begin at Day 0, which may occur on the date of screening/enrollment or up to two weeks following screening/enrollment visit, and every month thereafter. The visit schedule is as follows: A clinical evaluation, including safety measures, will occur monthly. Vision will be measured at the screening/enrollment visit and at 2, 3, 6, 9, 12, 18 and 24 months after the first injection has occurred. Fundus autofluorescence will occur at screening/enrollment and at 2, 6, 12, 18 and 24 months after the first injection has occurred. Fundus color photography and optical coherence tomography will occur at screening/enrollment and at 6, 12, 18 and 24 months after the first injection has occurred. The primary goal is to evaluate whether the persons receiving the sirolimus injections show a slower worsening of geographic atrophy compared to the persons receiving the sham injections. A secondary goal is to evaluate the impact of sirolimus on vision compared to the sham. NOTE: As of May 30, 2014, study injections were discontinued due to safety concerns. No further enrollments will occur and follow-up will continue on all active study participants on a quarterly basis. That is, on visits coinciding with 3 month intervals from date of enrollment.

The purpose of this study is to determine the efficacy, safety and tolerability of multiple doses of RN6G in subjects with Geographic Atrophy Secondary to Age-related Macular Degeneration.

The purpose of this study was to to demonstrate superiority of AL-78898A intravitreal (IVT) injections compared to sham injections by assessing mean geographic atrophy (GA) lesion size change from baseline at Month 12.

This is a Phase II/III vehicle controlled, double masked, single center study. A single eye of 60 individuals with mild to moderate nonexudative 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 12, 18 and 24 months.