Opthea Confirms Final Patient Enrolment in Phase 2b Wet AMD Clinical Trial


Opthea Limited recently announced the last patient has been enrolled in the company’s ongoing Phase 2b trial of OPT-302 for wet age-related macular degeneration (AMD), and the final number of patients is confirmed as 366.

This announcement follows the randomization of an additional 15 patients who were undergoing eligibility screening when the company recently successfully achieved its target enrolment of 351 treatment naïve patients into the study. With patient enrolment into the Phase 2b trial now closed, Opthea is currently focused on the completion of all patient dosing and data collection. The company expects to report top-line primary outcomes results from this study in the fourth quarter of 2019, significantly ahead of the original projected timelines.

Professor Guna Laganovska, Head of Department Ophthalmology at Riga Stradiņš University and Pauls Stradiņš Clinical University Hospital in Riga, Latvia, and leading recruiter in the Phase 2b clinical trial, stated “We are delighted to be involved in Opthea’s Phase 2b wet AMD clinical trial and to be a part of a program advancing a promising clinical candidate, OPT-302, that may offer patients additional clinical benefit over standard of care anti-VEGF-A therapies. More complete blockade of the VEGF/VEGFR pathway, by combined administration of OPT-302 with a VEGF-A inhibitor, may be an effective strategy to address the significant unmet medical need for patients with wet AMD, DME and other retinal diseases. With a scarcity of novel combination approaches in development and encouraging clinical data to date, we look forward to the outcomes from Opthea’s ongoing Phase 2 clinical trials with OPT-302.”

Opthea’s Phase 2b trial is a double-masked, randomized, controlled clinical study of 366 patients randomized in a 1:1:1 ratio to each of three treatment groups to investigate the clinical efficacy and safety of OPT-302 administered at 0.5 mg or 2.0 mg in combination with the VEGF-A inhibitor ranibizumab (Lucentis, 0.5 mg) compared to ranibizumab (0.5 mg) alone. Patients randomized to the ranibizumab alone group also receive a sham injection to mask the patient to the treatment group. Treatments are administered on a monthly basis for 6 months via intravitreal (ocular) injection. The study is being conducted at 113 clinical sites in the US, Israel, and eight European countries.

Dr. Megan Baldwin, CEO & Managing Director of Opthea Limited, added “We are very pleased to have completed this patient enrolment clinical milestone ahead of schedule and are looking forward to completing the 6-month treatment phase of this study and then releasing top-line data in the fourth quarter of next year.  We are grateful to the individuals, their families and physicians who are participating in the study.”

Additional information on Opthea’s technology and clinical trials in wet AMD and diabetic macular edema (DME) can found at www.opthea.com and www.clinicaltrials.gov (ID#: NCT03345082 and ID#: NCT03397264, respectively).

OPT-302 is a soluble form of vascular endothelial growth factor receptor 3 (VEGFR-3) or ‘Trap’ molecule that blocks the activity of two proteins (VEGF-C and VEGF-D) that cause blood vessels to grow and leak, processes which contribute to the pathophysiology of retinal diseases.  Opthea is developing OPT-302 for use in combination with inhibitors of VEGF-A (eg, Lucentis/Eylea). Combination therapy of OPT-302 and a VEGF-A inhibitor achieves more complete blockade of members of the VEGF family, blocks mechanisms contributing to sub-optimal response to selective VEGF-A inhibitors and has the potential to improve vision outcomes by more completely inhibiting the pathways involved in disease progression.

Opthea has completed a Phase 1/2a clinical trial in the US investigating OPT-302 wet AMD patients as a monotherapy and in combination with Lucentis. The trial was conducted under an FDA approved IND at 14 US clinical sites. The purpose of the trial was to evaluate the safety, pharmacokinetics (PK) and pharmacodynamics of OPT-302 administered as monthly intravitreal injections for 3 months with and without Lucentis in patients with wet age-related macular degeneration (AMD).  Of the 51 patients enrolled, 25 were treatment naïve and 26 had received prior intravitreal anti-VEGF-A therapy.

Further details on the Phase 1/2a trial can be found at: www.clinicaltrials.gov, Clinical trial identifier:  NCT02543229.  Details on the outcomes of the study can be found on the Opthea website: www.opthea.com.

Optheais a biologics drug developer focusing on ophthalmic disease therapies. It controls exclusive worldwide rights to a significant intellectual property portfolio around Vascular Endothelial Growth Factor (VEGF)-C, VEGF-D and VEGFR-3. Opthea’s intellectual property is held within its wholly-owned subsidiary Vegenics Pty Ltd. The applications for the VEGF technology, which functions in regulating blood and lymphatic vessel growth, are substantial and broad. Opthea’s product development programs are focused on developing OPT-302 (formerly VGX-300, soluble VEGFR-3) for back of the eye disease such as wet age-related macular degeneration (wet AMD) and diabetic macular edema (DME).

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