Omidenepag Isopropyl in Latanoprost Low/Nonresponders With Primary Open Angle Glaucoma or Ocular Hypertension: A Phase 3, Nonrandomized, Two-Phase, Open-Label Study

PRÉCIS: This study demonstrates the efficacy and safety of once-daily 0.002% omidenepag isopropyl (OMDI) in patients with primary open angle glaucoma (POAG) or ocular hypertension (OHT) who do not respond or respond poorly to latanoprost. PURPOSE: The purpose of this study was to evaluate the intraocular pressure (IOP)-lowering efficacy and safety of OMDI in latanoprost low/nonresponders with POAG or OHT. MATERIALS AND METHODS: Phase 3, nonrandomized, 2-phase, open-label, multicenter study (NCT03697811) in the United States. Key inclusion criteria included individuals aged 18 years or above, POAG or OHT diagnosis in both eyes, IOP ≥22 mm Hg in ≥1 eye, and ≤34 mm Hg in both eyes at all time points. Overall, 107 patients were enrolled; 104 completed treatment. Included a screening period (≤35-day washout period and 8-week latanoprost run-in period) and a 3-month treatment period comprising one drop of OMDI 0.002% once daily in both eyes. The primary study endpoint was changed from baseline in the mean diurnal (MD) IOP at month 3. Safety endpoints included incidence of adverse events, serious adverse events, and adverse drug reactions. RESULTS: At baseline (visit 4), 75 (70.1%) patients had POAG, 32 (29.9%) had OHT, and 68 (63.6%) had prior use of prostaglandin/prostaglandin analogs (37.4% of whom used latanoprost). The mean (SD) baseline MD IOP was 23.34 mm Hg (2.12). The mean (SD) 3-month (visit 7) MD IOP change from baseline (following latanoprost run-in period and OMDI treatment period) was an additional decrease of 2.96 mm Hg (2.83) (P<0.0001). No significant safety issues were reported during OMDI treatment. CONCLUSIONS: These data demonstrate OMDI efficacy and safety in latanoprost low/nonresponders with POAG or OHT, suggesting OMDI is a treatment option in the patient population in this study.