Okogen Receives CDSCO Authorization to Advance the EMERALD Phase 1/2 Study of Treyegen™ (OKG-0303) for Acute Infectious Conjunctivitis

Clinical Program Represents an Important Step in Validating Okogen's Host-Directed Antiviral Platform

Key Takeaways

  • CDSCO has authorized the EMERALD Phase 1/2 study of Treyegen™ (OKG-0303) in India, advancing the program into clinical evaluation for acute infectious conjunctivitis.
  • The EMERALD study will enroll more than 300 patients and evaluate safety, pharmacokinetics, virologic and microbiologic activity, and clinical efficacy, with data expected later this year.
  • Treyegen™ (OKG-0303) is designed as a single investigational therapy addressing both viral and bacterial forms of acute infectious conjunctivitis, while also evaluating the broader potential of Okogen’s host-directed antiviral platform.

Okogen, Inc., a clinical-stage biotechnology company focused on developing innovative therapies for infectious diseases, today announced that the Central Drugs Standard Control Organisation (CDSCO), India's national drug regulatory authority, has authorized the EMERALD study, the Company's Phase 1/2 clinical trial evaluating Treyegen™ (OKG-0303) for the treatment of acute infectious conjunctivitis.

The authorization is a significant milestone in the development of Treyegen™ (OKG-0303) and transitions the program into clinical evaluation. The approved EMERALD study follows years of formulation development, manufacturing, nonclinical research and regulatory engagement, establishing the pathway to generate the clinical data required to support future regulatory and commercial development.

"Every successful development program is defined by a series of execution milestones that increase the probability of success and build greater value," said Joshua Moriarty, Chief Executive Officer of Okogen. "Receiving CDSCO authorization is among the most significant milestones achieved by Treyegen™ (OKG-0303) since the program was conceived and reflects years of disciplined execution across our scientific, manufacturing, clinical and regulatory organizations.”

Treyegen™ (OKG-0303) is being developed as a novel ophthalmic therapy designed specifically for both the viral and bacterial forms of acute infectious conjunctivitis. Unlike conventional approaches directed toward presumed viral disease, presumed bacterial disease or symptomatic management alone, Treyegen™ (OKG-0303) combines antiviral, antibacterial and symptom-relieving activities in a single investigational therapy addressing the disease's broad clinical presentation.  The EMERALD Phase 1/2 study is expected to generate one of the most comprehensive clinical datasets assembled for an investigational therapy in acute infectious conjunctivitis, including evaluations of safety, systemic pharmacokinetics, virologic and microbiologic activity, and clinical efficacy. The program will enroll more than 300 patients, with data expected later this year.

"Our objective has never been simply to develop another ophthalmic anti-infective," Moriarty added. "We set out to develop a therapy designed for the way acute infectious conjunctivitis is actually encountered in clinical practice, where physicians often need to make treatment decisions before the underlying cause has been definitively established. We believe that complexity makes it one of the most challenging infectious diseases in ophthalmology, but it also makes it an ideal proving ground for our host-directed antiviral platform. If we can demonstrate meaningful clinical benefit across this diverse disease state, we believe it has important implications well beyond ophthalmology."

India represents an ideal environment for the clinical evaluation of acute infectious conjunctivitis given its high disease burden, internationally recognized ophthalmic investigators and extensive clinical research infrastructure. The EMERALD study will be conducted at leading ophthalmic centers across the country including the Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences (AIIMS), New Delhi.

"Acute infectious conjunctivitis is uniquely challenging because it encompasses a broad range of viral and bacterial pathogens that often cannot be distinguished at initial presentation. That complexity makes it an ideal disease in which to evaluate a therapy designed to address the broad clinical presentation of infection rather than a single organism. Success in this setting would provide important validation of both Treyegen™ (OKG-0303) and the broader therapeutic potential of the ranpirnase platform," said David A. Hollander, MD, MBA, Chief Medical Officer of Okogen. "The breadth of data generated through the EMERALD study will help guide future development decisions while further defining the clinical profile of Treyegen™ (OKG-0303). We appreciate the rigorous scientific review conducted by CDSCO and look forward to advancing this program."

Okogen expects to begin enrolling subjects in the EMERALD study in the coming weeks and intends to provide additional updates as the clinical program reaches key development milestones.

Okogen also recently launched its new corporate website at www.okogen.com. The website reflects the Company's focus on its host-directed antiviral platform and provides updated information on Treyegen™ (OKG-0303) and the Company's development programs.


About Treyegen™ (OKG-0303)
Treyegen™ (OKG-0303) is an investigational ophthalmic therapy being developed for the treatment of acute infectious conjunctivitis. The proprietary formulation combines ranpirnase, a host-directed antiviral, tobramycin, a broad-spectrum antibacterial agent, and oxymetazoline, which reduces ocular redness, into a single investigational therapy designed to address the broad clinical presentation of acute infectious conjunctivitis. Okogen believes this differentiated approach has the potential to simplify treatment decisions while providing physicians with a comprehensive therapeutic option for patients presenting with acute infectious conjunctivitis.

About Okogen
Okogen, Inc. is a clinical-stage biotechnology company developing a broad-spectrum, host-directed antiviral platform built around ranpirnase. The Company is advancing ranpirnase-based therapies across four therapeutic pillars: ophthalmology, medical countermeasures, systemic antivirals and dermatology. Its development strategy positions ophthalmology as the lead clinical proving ground for the platform, with the goal of applying clinical insights, formulation expertise and manufacturing capabilities across a broader portfolio of antiviral therapies. For more information, visit www.okogen.com.

Forward-Looking Statements
This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding the development, clinical evaluation, regulatory progress, potential benefits and commercialization of Treyegen™ (OKG-0303). These statements are based on current expectations and are subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such forward-looking statements. Okogen undertakes no obligation to update any forward-looking statements except as required by applicable law.

SOURCE: Okogen

Key Takeaways

  • CDSCO has authorized the EMERALD Phase 1/2 study of Treyegen™ (OKG-0303) in India, advancing the program into clinical evaluation for acute infectious conjunctivitis.
  • The EMERALD study will enroll more than 300 patients and evaluate safety, pharmacokinetics, virologic and microbiologic activity, and clinical efficacy, with data expected later this year.
  • Treyegen™ (OKG-0303) is designed as a single investigational therapy addressing both viral and bacterial forms of acute infectious conjunctivitis, while also evaluating the broader potential of Okogen’s host-directed antiviral platform.

Media Gallery

Quotes

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Receiving CDSCO authorization is among the most significant milestones achieved by Treyegen™ (OKG-0303) since the program was conceived and reflect...
Joshua Moriarty — Chief Executive Officer
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The breadth of data generated through the EMERALD study will help guide future development decisions while further defining the clinical profile of...
David A Hollander, MD, MBA — CMO, Okogen Inc.

Related Bios

Joshua Moriarty
Chief Executive Officer
Joshua Moriarty is the CEO and Director of Okogen, where he has led the company since 2022, overseeing a strategic restructuring and the acquisition of a clinically validated antiviral asset. Under his leadership, Okogen has sharpened its focus on patient-centric therapies for acute infectious conjunctivitis while expanding its broader antiviral pipeline.

Mr. Moriarty brings over 20 years of experience in pharmaceutical and medical device development. He previously served as Executive Director at Ora, Inc., where he worked closely with emerging ophthalmic companies to evaluate and advance clinical-stage programs from early development through regulatory approval and commercialization. His experience includes strategic planning, fundraising, IND-enabling activities, and clinical and regulatory execution.
View Full Bio>>
David A Hollander, MD, MBA
CMO, Okogen Inc.
David A Hollander, MD, MBA is the Chief Medical Officer of Okogen, Inc. Dr. Hollander most recently also served as Chief Medical Officer and Global Therapeutics Commercial Lead at Revance Therapeutics, Inc, until its acquisition by Crown Laboratories in February 2025. Prior to Revance, Dr Hollander was the Chief Research and Development Officer of Aerie Pharmaceuticals, Inc. Dr. Hollander began his career in industry in 2006 at Allergan, Inc as a Medical Director of Ophthalmology where he also held a number of leadership roles including Vice President of Eye Care for U.S. Medical Affairs, Vice President and Head of Eye Care for Global Medical Affairs, as well as Therapeutic Area Head in Clinical Development for Anterior Segment and Consumer Eye Care. Dr. Hollander also serves as a Director for Kiora Pharmaceuticals (NASDAQ: KPRX).

During this time, Dr. Hollander continued to see patients and instruct residents and fellows in cataract surgery and corneal transplantation. Dr. Hollander currently is President & CSO of Andover Eye Institute and previously also served as Chief Medical Officer of Ora, Inc, where he oversaw medical operations across pharmaceutical and device clinical development, preclinical studies, as well as research and development into new regulatory endpoints, most notably the development of novel mobility courses for evaluating treatments for inherited retinal diseases.

Dr. Hollander received his B.S. in chemistry with honors and distinction from Stanford University and earned his medical degree at the University of Pennsylvania School of Medicine. Dr. Hollander also obtained an M.B.A. in Health Care Management from the Wharton School at the University of Pennsylvania. Dr. Hollander completed his residency in ophthalmology at the University of California, San Francisco, and a Heed Fellowship in Cornea, External Disease and Refractive Surgery at the Jules Stein Eye Institute/University of California, Los Angeles.
View Full Bio>>

Contacts

Joshua Moriarty
jmoriarty@okogen.com
CEO, Okogen