Ophthotech’s Fovista anti-PDGF combination therapy superior to Lucentis for wet AMD

Published on June 14, 2012 at 1:50 AM · No Comments

Ophthotech Corporation today announced results from the first clinical trial to show statistically significant superior efficacy over Lucentis® (ranibizumab) monotherapy for the treatment of neovascular age-related macular degeneration (wet AMD).    

In a prospective, randomized, controlled Phase 2b clinical trial of 449 patients with wet AMD, Ophthotech’s FovistaTM anti-PDGF therapy (1.5 mg), administered in combination with Lucentis anti-VEGF therapy, met the pre-specified primary efficacy endpoint of mean vision gain. Patients receiving the combination of Fovista (1.5 mg) and Lucentis gained a mean of 10.6 letters of vision on the ETDRS standardized chart at 24 weeks, compared to 6.5 letters for patients receiving Lucentis monotherapy (p=0.019), representing a 62% additional benefit.   

No significant safety issues were observed for either treatment group in the trial.

Enhanced visual outcomes of Fovista anti-PDGF (1.5 mg) combination therapy as compared to Lucentis monotherapy were demonstrated at every monthly timepoint. In addition, the relative magnitude of visual benefit continued to increase over time. The visual benefit of anti-PDGF (1.5 mg) combination therapy compared to Lucentis monotherapy was greater at the 6-month timepoint than at the 3-month timepoint. The increasing divergence of the efficacy curves suggests the benefit of chronic anti-PDGF combination therapy. A classic dose-response curve was observed.

"This is a truly remarkable finding for patients with wet AMD. To achieve a 62% relative visual benefit over anti-VEGF monotherapy is extraordinary," commented retina specialist Carmen A. Puliafito, M.D., Dean of the Keck School of Medicine at the University of Southern California. "The very compelling and robust results of this well-executed study validate PDGF as an important target for wet AMD and set the stage for a new era of combination therapy via co-formulation or fixed-combination delivery. I look forward to the rapid development of this important drug for our patients."

The robust benefit of Fovista anti-PDGF (1.5 mg) combination therapy over Lucentis monotherapy was consistent across all subgroups including those analyzing baseline vision, lesion size and the proportion of patients gaining 1, 2, 3, 4 and 5 lines of vision (ETDRS standardized chart). An average absolute benefit of 7.4% over Lucentis monotherapy was present across all ETDRS lines of vision gain. In addition, a relative benefit of 25% over Lucentis monotherapy was attained in patients who gained 3 or more lines of vision, with 69% and 178% relative benefit in patients gaining 4 or more and 5 or more lines of vision, respectively.

Donald J. D'Amico, M.D., Professor and Chairman of Ophthalmology at the Weill Cornell Medical College, added, "This breakthrough study is a major step forward in our treatment of patients with wet AMD and represents a clear paradigm shift. This convincing study shows clinically significant improvements in visual outcomes in all patient subgroups over six months. In addition to delivering the promise of enhanced visual gain, I am delighted with the potential of pairing this anti-PDGF entity with any of the increasing number of anti-VEGF agents in the marketplace."

"We are very encouraged by the strong and consistent enhanced efficacy demonstrated in this large trial," stated Samir Patel, M.D., Co-Founder, President and Chief Executive Officer of Ophthotech. "Based on these results, Ophthotech plans to expedite the preparation of a Phase 3 registration program with the goal of bringing Fovista anti-PDGF therapy to patients with wet AMD as soon as possible."

Source:

Ophthotech Corporation

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