Safety and Efficacy Study of Iontophoretic Dexamethasone Phosphate Ophthalmic Solution to Treat Non-Infectious Anterior Segment Uveitis

Anterior uveitis is a disorder of the eye associated with intraocular inflammation of the anterior portion of the uvea, particularly the iris and/or ciliary body. It is distinct from other iterations of uveitis such as posterior, diffuse and intermediate uveitis although it is the most common form of uveitis and accounts for approximately 75% of cases. In a Phase 1/2 study (EGP-437-001), the delivery of EGP-437 (40 mg/mL dexamethasone phosphate solution) at four different iontophoresis dose levels was studied in 40 subjects with non-infectious anterior segment uveitis. The study demonstrated that a single EGP-437 treatment: lowered anterior chamber cell (ACC) scores in the majority of patients without requiring additional treatment; produced low short-term systemic exposure to dexamethasone and dexamethasone phosphate; and produced the most beneficial effects in the 1.6 and 4.8 mA-min dose groups; and caused mainly minor AEs and no non-ocular systemic corticosteroid mediated effects were observed. The Phase 3 study is intended to confirm and extend the results from the Phase 2 study. The study is designed to assess the safety and efficacy Ocular Iontophoresis with EGP-437 4.0 mA-min at 1.5 mA and accompanying placebo eyedrops in comparison to Ocular Iontophoresis with sodium citrate buffer solution 4.0 mA-min at 1.5 mA and accompanying prednisolone acetate (1%) eyedrops for the treatment of non-infectious anterior segment uveitis.