OcuTerra Therapeutics reaches full enrollment in Phase 2 DR:EAM of OTT166 eye drops for diabetic retinopathy

The DR:EAM trial will evaluate topically delivered OTT166 eye drops in adult patients with moderately severe to severe non-proliferative diabetic retinopathy (NPDR) or mild proliferative diabetic retinopathy (PDR) with minimal vision loss. (Image Credit: ©Satjawat - Adobe.Stock.com)

OcuTerra Therapeutics, Inc has reached full enrollment in the company’s Phase 2 DR:EAM (Diabetic Retinopathy: Early Active Management) clinical trial. The news release¹ stated that the trial will evaluate topically delivered OTT166 eye drops in adult patients with moderately severe to severe non-proliferative diabetic retinopathy (NPDR) or mild proliferative diabetic retinopathy (PDR) with minimal vision loss.

Kerrie Brady, President and CEO of OcuTerra Therapeutics, noted the milestone in the company’s press release, saying “The full enrollment of the DR:EAM clinical trial marks a crucial step in the development of OTT166 as a topical therapeutic that could benefit millions of patients with DR and transform the standard of care for this potentially devastating condition. With limited therapeutic options for the treatment of DR on the market, we recognize an immense need for a non-invasive, earlier intervention. I want to thank the OcuTerra team, the investigators across our 65 trial sites and of course, the patients who have played an essential role in our work.”¹

According to the company, the DR:EAM study is a multicenter, randomized, double-masked clinical trial designed to assess the safety and efficacy of a high and low dose of daily topical administration of OTT166 versus vehicle. The trial enrolled 225 adult patients who were randomly assigned one of two doses of OTT166 or to one of two control groups receiving vehicle. OTT166 is a small molecule RGD integrin inhibitor delivered topically in the form of an eye drop and is purpose-engineered to distribute to the retina in therapeutic concentrations.

The primary efficacy endpoints for the trial are the proportion of patients with treatment-emergent adverse events (TEAEs), and the proportion of participants who have improved by ≥ 2 steps from baseline in Diabetic Retinopathy Severity Scale (DRSS), both at 24 weeks. More information about the DR:EAM clinical trial can be found at ClinicalTrials.gov.

“Now that we’ve reached full enrollment for the Phase 2 DR:EAM study, the clinical team looks forward to fully evaluating the data on OTT166’s safety, efficacy and activity early next year,” said David Tanzer, MD, board-certified ophthalmologist and Chief Medical Officer of OcuTerra Therapeutics. “Through purpose engineering of the molecule and a patient-focused approach, we believe that OTT166 could bring a major shift in how and when DR is treated.”¹

Carl Regillo, MD, Director, Retina Service, Wills Eye Hospital; Professor of Ophthalmology, Thomas Jefferson University; and Principal Investigator for the DR:EAM clinical trial shared the outlook of this compound in the release, saying, “OTT166 has demonstrated robust biological activity and the potential to modulate multiple key drivers of DR. This is an essential milestone for the development of a treatment that could benefit millions of patients with DR.”¹

About the DR:EAM Clinical Trial

DR:EAM is a multicenter, randomized, double-masked clinical trial designed to assess the safety and efficacy of a high and low dose of daily topical administration of OTT166 versus placebo for 24 weeks in 225 adult patients with moderately severe to severe NPDR or mild proliferative diabetic retinopathy with minimal vision loss. The primary efficacy endpoint of the clinical trial is the percentage of patients that have a 2-step improvement in the Diabetic Retinopathy Severity Scale (DRSS). Additional endpoints of the clinical trial include measuring the prevention of progression to vision-threatening complications, amount of delayed time to intravitreal injection and/or laser treatment, and exploratory imaging endpoints. More information about this trial is available at ClinicalTrials.gov.

About Diabetic Retinopathy

Diabetic retinopathy is the most common diabetic eye disease and the leading cause of vision loss and blindness in American working age adults, which affects nearly 10 million people in the US1. The current standard of care for diabetic retinopathy is active surveillance or “watch-and-wait”2 until a sight threatening complication arises. When vision deteriorates further due to complications, the patient must undergo injections of medication directly into the back of their eye (intravitreal injection) or undergo destructive laser procedures to help stop the growth of new blood vessels and decrease fluid buildup.

About OTT166

OTT166 is an investigational, novel, patented, potent and selective small molecule RGD integrin inhibitor designed with purpose engineering to have an optimum balance of physiochemical properties to allow it to distribute to the retina in high concentrations after topical (eye drop) administration to the eye. In preclinical studies, OTT166 selectively inhibited key RGD integrin subtypes, including αvβ3, to regulate cellular responses to VEGF and other growth factors known to contribute to development and progression of diabetic retinopathy and other ocular diseases. In early clinical trials in patients with diabetic retinal disease, OTT166 eye drops have demonstrated preliminary evidence of tolerability and biological activity.

Reference:

1. OcuTerra Completes Enrollment in Phase 2 DR:EAM Clinical Trial of Topically Delivered OTT166 in Adults with Diabetic Retinopathy. OcuTerra Therapeutics, Inc. July 18, 2023. Accessed July 20, 2023. https://www.businesswire.com/news/home/20230718647783/en/OcuTerra-Completes-Enrollment-in-Phase-2-DREAM-Clinical-Trial-of-Topically-Delivered-OTT166-in-Adults-with-Diabetic-Retinopathy