Age-Related Macular Degeneration Clinical Trial
Official title:
A Phase II Study of OT-551 Antioxidant Eye Drop in Participants With Bilateral Geographic Atrophy Associated With Age-Related Macular Degeneration
Othera Pharmaceuticals' Othera (OT)-551 antioxidant eye drop has the potential for chronic treatment of the dry form of age-related macular degeneration. This pilot study of up to 10 eye drop tolerant participants with bilateral geographic atrophy is designed to characterize the effect of 0.45% concentration of OT-551 eye drops given 3 times a day on the progression of geographic atrophy area over a two-year period. Participants will have one eye randomized to receive the eye drop and the fellow eye will be observed only.
Age-related macular Degeneration (AMD), the leading cause of blindness in people over age 55
in the U.S., is a heterogeneous clinical entity in which retinal degeneration occurs
predominantly in the macula in the context of aging and leads to impairment primarily of
central visual acuity. AMD occurs in two general forms, one of which involves subchoroidal
neovascularization with subsequent formation of a disciform scar. A second form, and the
subject of this study, is termed "dry" or atrophic macular degeneration and involves a
constellation of clinical features that can include drusen, pigment clumping and/or retinal
pigment epithelium (RPE) dropout, and geographic atrophy. Geographic atrophy can begin as a
thinning of the RPE with involvement of the underlying choriocapillaris and lead subsequently
to an atrophic change in the macula. The only therapy for persons with atrophic AMD is an
oral supplement containing high doses of antioxidants and zinc, which was tested by the
National Eye Institute (NEI) in a large, multicenter, double-masked, placebo-controlled
clinical trial with average participant follow-up of about 6 years. This antioxidant therapy
was shown to modestly retard the progression of dry AMD from an intermediate stage to the
advanced stages and demonstrated the benefit of antioxidant therapy in this disease.
In this study, we will evaluate Othera Pharmaceuticals' OT-551 antioxidant eye drop for
chronic treatment of the dry form of AMD. This single-center, open-label, study of up to 10
participants with bilateral geographic atrophy is designed to characterize the safety of 0.45
percent concentration of OT-551 eye drops, given 3 times a day, on participants with
geographic atrophy area for up to three years. Participants will have one eye randomized to
receive the eye drop and the fellow eye will be observed.
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