- DIAMOND trial in Diabetic Macular Edema (DME) with topical OCS-01 met its stage 1 objective of validating the loading and maintenance dosing regimen designed to optimize OCS-01 efficacy potential with robust statistical significance
- Primary efficacy endpoint of mean change in Best Corrected Visual Acuity (BCVA) versus baseline at Week 6 showed statistically significant increase in visual acuity in the OCS-01 arm compared to vehicle arm
- Statistically significant secondary endpoints showed higher percentage of patients achieving ≥15-letter improvement in BCVA and better improvement in retinal thickness in the OCS-01 arm versus vehicle arm
- OCS-01 was well-tolerated with no unexpected adverse events observed
- If approved, OCS-01 has the potential to become the first topical and non-invasive treatment for DME
- An investor and analyst call will be held today at 8:00am US Eastern Time, details below
ZUG, Switzerland and BOSTON, May 22, 2023 (GLOBE NEWSWIRE) -- Oculis Holding AG (Nasdaq: OCS) (“Oculis”), a global biopharmaceutical company purposefully driven to save sight and improve eye care, today announced positive top line results from Stage 1 of its Phase 3 DIAMOND trial of OCS-01 eye drops in Diabetic Macular Edema (DME). DME is the leading cause of visual loss and legal blindness in patients with diabetes, affecting around 37 million people worldwide, with a significant number of patients left untreated due to a lack of convenient treatment options.
OCS-01 Positive Phase 3 Stage 1 Top Line Results Could Signify a Paradigm Shift in DME
DIAMOND (DIAbetic Macular edema patients ON a Drop) is a Phase 3, two-stage, double-masked, randomized, multi-center trial to assess the efficacy and safety of OCS-01 eye drops in DME patients. The primary objective of Stage 1 was to select the optimal dosing regimen. Stage 1 was conducted in 39 sites across the USA and Europe with 148 patients randomized 2:1 to receive OCS-01 (n=100) or vehicle (n=48) six times daily for a six-week loading phase and then three times daily for a subsequent six-week maintenance phase.
Stage 1 met the primary efficacy endpoint with a statistically significant improvement in mean BCVA “Early Treatment Diabetic Retinopathy Study” chart (BCVA ETDRS) score from baseline to Week 6 versus (vs) vehicle (OCS-01: 7.2 letters vs vehicle: 3.1 letters, p=0.007) demonstrating strong visual gain in the treatment arm. The effect was sustained to Week 12 with statistical significance (OCS-01: 7.6 letters vs vehicle 3.7 letters, p= 0.016). Furthermore, there was a higher percentage of patients in the OCS-01 group who achieved ≥15-letter improvement in BCVA from baseline vs vehicle at Week 6 (OCS-01: 25.3% vs vehicle: 9.8%, p=0.015), which was sustained to Week 12 (OCS-01: 27.4% vs vehicle 7.5%, p=0.009).
OCS-01, in this 3-month trial, has met both clinical efficacy endpoints (main BCVA change, proportion of patients with 3 lines gain) that are required for regulatory approval, if met at 12 months treatment duration.
An effect on retinal thickness was also observed with a statistically significant decrease in Central Subfield Thickness (CST) at Week 6 versus baseline in the OCS-01 treatment arm (OCS-01: -63.6 µm vs vehicle: +5.5 µm, p