Oxurion Announces Publication of Positive Phase 1 Clinical Data Evaluating THR-687 for Treatment of DME
Oxurion announced that the positive phase 1 study of THR-687, a novel, highly potent integrin agonist for the treatment of DME has just been published in Ophthalmology Science.
The multicenter, dose escalation study was designed to evaluate the safety and preliminary efficacy of three dose levels of THR-687 (0.4, 1.0 or 2.5mg) in subjects with center-involved DME following a single intravitreal injection.
As reported from the topline data in 2020, a single injection of THR-687 was safe and well tolerated, showing an encouraging efficacy signal as measured by a rapid gain in BCVA with three months durability and a decrease in CST up to one month following the injection.
A clear dose response was seen with the greatest positive effect on BCVA and Central Subfield Thickness (CST) with the highest dose of THR-687. For this highest dose, a mean BCVA Improvement of 11 letters was noted at Day 14, with a peak improvement of 12.5 letters at Month 3. Similarly, a peak mean CST decrease of 106 µm was observed at Day 14 with the highest dose of THR-687.
THR-687 will next be investigated in the INTEGRAL phase 2 study, a randomized, multicenter trial in DME. This is the first trial in which multiple intravitreal injections of THR-687 will be administered in humans. The two-part study will assess different dose levels of multiple THR-687 injections (Part A) and then go on to evaluate the efficacy and safety of the selected dose of THR-687 versus aflibercept (the current standard of care) for the treatment of DME (Part B).
The dose selection decision, following Part A, is anticipated in the first half of 2022 and topline data from Part B is expected in the second half of 2023.
“I am pleased that the significance of the phase 1 THR-687 data has been recognized by its publication in the prestigious American Academy of Ophthalmology journal. The highly promising results from just a single dose of THR-687 have warranted the planning of the phase 2 study which just opened enrollment of patients,” Tom Graney, CFA, CEO of Oxurion, said in a company news release. “There remains a significant unmet medical need in DME and THR-687 has the potential to be a transformative first line therapy for the many patients suffering from this serious condition. We would like to thank the patients for their participation in the Phase 1 study as well as the world-class investigators that worked on the trial and the publication.”
Beyond DME, THR-687 has the potential to be developed for additional vascular retinal disorders including for wet age-related macular degeneration (AMD) and retinal vein occlusion (RVO). These additional indications, alongside DME, mean that THR-687, is targeting a total market opportunity estimated to be worth $12+ billion annually.