2 month sustained release drug may improve therapy over topical drop administration.
Following encouraging results from Ocular Therapeutix’s travoprost punctum plug feasibility study, the company is now entering pilot Phase II clinical trials to examine a 2 month sustained release plug (OTX-TP2) for the treatment of ocular hypertension and glaucoma. Ocular Therapeutix’s travoprost punctum plugs are inserted into the proximal nasolacrimal canal, and release drug to the ocular surface over the two month treatment period.
The initial travoprost punctum plug feasibility study, conducted at the Singapore National Eye Center and the National University Hospital in Singapore, examined efficacy of the technology over a 1 month duration. “Having demonstrated proof of concept in our feasibility study, we have extended the length of drug delivery to 2 months for the pilot Phase II trial” stated Amar Sawhney, Ph.D., President and CEO of Ocular Therapeutix, Inc. “Extending treatment duration for the disease is a key milestone for our company’s path to commercialization.”
The pilot Phase II study will enroll twenty patients (up to 40 eyes) at the Umhlanga Hospital Medical Centre and Netcare Alberlito Hospital in South Africa. Patients with documented ocular hypertension or open-angle glaucoma, the most common form of the disease, will be evaluated for reduction of intraocular pressure from baseline and retention of the plug through 2 months. Elevated intraocular pressure is the most important risk factor for glaucoma.
Glaucoma is a chronic disease which must be monitored and treated for life, impacting more than 2 million Americans, and represents a $5 billion market worldwide. The current mode of treatment for the disease is topical prescription drops which must be taken daily and at regular intervals to prevent progression of the disease. However, topical prescriptions are plagued with issues of non-compliance, which can lead to costly and invasive surgeries, vision impairment, and even blindness. It has been reported that up to 60% of patients do not administer ophthalmic drops as directed, even though patients’ perception is that they are compliant with 97% of their dosing.1
“Travoprost Punctum Plugs may help to overcome issues of daily self-administration of medication leading to potential patient non-compliance” stated Pierre Wassermann, Principal Investigator at the Umhlanga Hospital Medical Centre in South Africa. “Additionally, maintaining continuous drug presence via sustained delivery may be an improvement over fluctuating drug levels resulting from daily topical therapy.”
About Ocular Therapeutix’s Travoprost Punctum Plugs:
Ocular Therapeutix’s travoprost punctum plugs use the company’s proprietary polyethylene glycol hydrogel technology to release travoprost in a sustained fashion over a specified period of time. At the end of the treatment period, the plug begins to absorb, and exit the nasolacrimal system without need for removal by the physician. The plugs contains a visualization agent for retention monitoring throughout the treatment period.
About Ocular Therapeutix, Inc.:
Founded in November 2006, Ocular Therapeutix, Inc. is a privately held company based in Bedford, MA, focused on the development and commercialization of ophthalmic therapeutic products using its proprietary hydrogel technology. Ocular Therapeutix is using its hydrogel technology for development of a variety of ophthalmic applications including hydrogel sealants for ocular surface protection, drug-eluting punctal plugs for treatment of various anterior segment diseases, and with therapeutic agents for back-of-the-eye diseases.
1Goldberg I. Compliance with Medical Management in Glaucoma. Asian J of Ophthalmol 2000;2(4):3-6.
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