U.S. Food And Drug Administration (FDA) Accepts New Drug Application For Bazedoxifene/Conjugated Estrogens, An Investigational Treatment For Symptoms Associated With Menopause And Prevention Of Osteoporosis

Pfizer Inc. (NYSE: PFE) and Ligand Pharmaceuticals Incorporated (NASDAQ: LGND) today announced that the United States Food and Drug Administration (FDA) accepted for review a New Drug Application (NDA) for bazedoxifene/conjugated estrogens (BZA/CE), a potential new medicine for non-hysterectomized women for the treatment of moderate-to-severe vasomotor symptoms (VMS) and vulvar and vaginal atrophy (VVA) associated with menopause, as well as the prevention of postmenopausal osteoporosis. The FDA Prescription Drug User Fee Act (PDUFA) date is October 3, 2013.

BZA/CE pairs the selective estrogen receptor modulator (SERM) bazedoxifene with conjugated estrogens. BZA/CE has been studied in a Phase III clinical development program ( Selective estrogens, Menopause And Response to Therapy [SMART] trials), which included approximately 7,500 postmenopausal women and assessed the safety and efficacy of BZA/CE for the treatment of moderate-to-severe VMS and VVA associated with menopause, as well as the prevention of postmenopausal osteoporosis. The most common adverse drug reactions observed in the SMART trials were abdominal pain, vaginal yeast infection and muscle spasms.

“Pfizer is dedicated to advancing treatments that may help improve health and well-being at each stage of life,” said Gail Cawkwell, M.D., Ph.D., vice president, Pfizer’s Medical Affairs. “BZA/CE was developed for non-hysterectomized women with moderate-to-severe menopausal symptoms. This milestone moves us one step closer towards potentially providing the first new treatment option in the U.S. in years for the treatment of these women’s menopausal symptoms.”

BZA/CE was developed by Wyeth Pharmaceuticals and was part of a broader research collaboration with Ligand on SERMs. Pfizer acquired the rights to BZA/CE when it acquired Wyeth.

“Pfizer continues to make good progress with this program, with this NDA submission shortly following the European Marketing Authorization Application submission earlier this year,” said John Higgins, president and chief executive officer, Ligand. “This is an important therapeutic need, and we commend Pfizer for its continued strong commitment to the program.”

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