Positive Results for Ophthotech's Novel Therapy for Wet AMD - Study of Anti-PDGF and Anti-VEGF Therapy Shows Significant Neovascular Regression and Enhanced Visu... (itive to an anti-VEGF attack. Th...)

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Positive Results for Ophthotech's Novel Therapy for Wet AMD - Study of Anti-PDGF and Anti-VEGF Therapy Shows Significant Neovascular Regression and Enhanced Visual Outcome

Date:5/4/2009

itive to an anti-VEGF attack.

"The objective and robust response of neovascular regression is consistent with the biologic activity of E10030. I look forward to a randomized trial design to confirm the strong proof of concept data of this study," said Dr. Donald J. D'Amico, Professor and Chairman, Department of Ophthalmology, Weill Cornell Medical College, New York-Presbyterian Hospital.

"It is exciting to see our clinical trial confirm the strong preclinical data from oncology and ophthalmic studies targeting the molecules regulating pericyte and endothelial cell survival. Ophthotech will continue to devote its resources towards an accelerated development of our anti-PDGF compound," said Dr. Samir C. Patel, President and CEO of Ophthotech Corp.

Wet AMD is characterized by the abnormal growth of blood vessels (neovascularization) beneath the retina, which leak blood and fluid and can cause permanent damage to cells in the center of the retina (the macula). This form of AMD is the most severe form of the disease, and often leads to permanent vision loss.

E10030 is one of three compounds that Ophthotech is developing to treat wet and dry AMD. Additional molecular entities include an anti-C5 aptamer and volociximab, an anti-angiogenic monoclonal antibody targeting the a5B1 integrin, both currently in a Phase I study.

About anti-PDGF E10030

E10030 is an aptamer-based compound directed against PDGF-B. Pharmacology studies indicate that E10030 binds to PDGF-B with high specificity and affinity and inhibits the functions of PDGF-B both in vitro and in vivo. In preclinical studies, E10030 demonstrated the potential to regress neovascularization when used in combination with a VEGF-A inhibitor. In experiments involving models of ocular vascularization, concurrent inhibition of PDGF-B and VEGF-A signaling was superior to inhibition of the VEGF-A pathway alone.'/>"/>

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