Eyetech Pharmaceuticals and Pfizer have announced that the U.S. Food and Drug Administration (FDA) approved Macugen (pegaptanib sodium injection) for the treatment of neovascular (wet) age-related macular degeneration (AMD), an eye disease associated with aging that destroys central vision.
AMD is the leading cause of irreversible severe vision loss in patients older than 50 years of age in developed countries. Macugen helps preserve vision and helps limit progression to legal blindness. Approval of Macugen follows a priority review under the FDA's rolling submission-Pilot 1 program based on data from the companies' Phase 2/3 pivotal clinical trials.
Macugen is the first in a new class of ophthalmic drugs to specifically target vascular endothelial growth factor (VEGF), a protein which acts as a signal in triggering the abnormal blood vessel growth and leakage that is the hallmark of neovascular AMD.
"Macugen is the first anti-angiogenic treatment approved in ophthalmology and represents the beginning of a new era. The anti-angiogenic approach specifically addresses, for the first time, an underlying cause of blindness in age-related macular degeneration. Anti-angiogenesis has evolved from theory to therapy," said Judah Folkman, M.D., Julia Andrus Dyckman Professor of Pediatric Surgery at Children's Hospital in Boston and Harvard Medical School.
Macugen meets a major urgent unmet medical need and is the first therapy indicated for the treatment of all types of neovascular AMD, regardless of lesion subtype or size. Until now, the only FDA-approved treatment was limited to the predominantly classic subtype of neovascular AMD, which accounts for up to 25 percent of the neovascular AMD patient population.
"Macugen is a revolutionary, breakthrough treatment for neovascular age-related macular degeneration as it targets the pathologic processes underlying the disease," said Donald J. D'Amico, M.D., Professor of Ophthalmology, Harvard Medical School. "Preserving vision will make a significant difference to AMD patients, since AMD can severely compromise a patient's ability to function independently. Neovascular AMD can lead to a rapid loss of central vision that impairs activities such as recognizing faces, reading, driving a car, crossing streets and basic tasks. As loss of vision progresses, patients often need help performing basic activities of daily living."
There are 15 million people in the United States living with some form of AMD, with more than 1.6 million experiencing the active blood vessel growth and blood vessel leakage associated with neovascular AMD. There are over 200,000 new cases of neovascular AMD each year and this number is expected to increase significantly as the baby boom generation ages and overall life expectancy increases. Presently, over 500,000 people worldwide lose their sight annually from the disease.
"The FDA's approval of Macugen for all neovascular age-related macular degeneration represents an important paradigm shift in the treatment of this devastating disease. Macugen is a novel treatment based on elegant science that for the first time targets the underlying cause of the disease, which has lead to our broad AMD label, including all subtypes and sizes," said David R. Guyer, M.D., Chief Executive Officer and Co-founder of Eyetech Pharmaceuticals, Inc.
Karen Katen, Pfizer's president of global pharmaceuticals, said, "Macugen represents a significant milestone in Pfizer's ongoing commitment to develop innovative ophthalmologic treatments for people whose quality of life and independence may be threatened by debilitating vision loss."