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
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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 (elective estrogens, enopause nd esponse to herapy [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.”
Menopause is a normal, natural event - it marks the permanent end of fertility and is usually confirmed when a woman has missed her period for 12 consecutive months. Menopause is associated with reduced functioning of the ovaries due to aging, resulting in lower levels of estrogens and other hormones. It is estimated that approximately 43 million women in the United States are of menopausal age, i.e. between the ages of 40 and 59. Of these women, 17 million experience vasomotor symptoms and 9 million experience moderate-to-severe symptoms. The majority of menopausal women experiencing moderate-to-severe vasomotor symptoms are not currently treating their symptoms.
Osteoporosis is a disease of the bones that leads to an increased risk of fracture. Decreased estrogen levels at the time of menopause are associated with rapid bone loss, making women more susceptible to osteoporosis. About 60 percent of women 50 years of age or older have low bone mass or osteoporosis.
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Ligand is a biopharmaceutical company that develops and acquires assets it believes will generate royalty revenues and, under its lean corporate cost structure, produce sustainable profitability. Ligand has a diverse asset portfolio addressing the unmet medical needs of patients for a broad spectrum of diseases including thrombocytopenia, multiple myeloma, diabetes, hepatitis, muscle wasting, dyslipidemia, anemia, and osteoporosis. Ligand’s Captisol® platform technology is a patent protected, chemically modified cyclodextrin with a structure designed to optimize the solubility and stability of drugs. Ligand has established multiple alliances with the world's leading pharmaceutical companies including GlaxoSmithKline, Merck, Pfizer, Eli Lilly & Company, Baxter International, Bristol-Myers Squibb, Celgene, Onyx Pharmaceuticals, Lundbeck Inc., and The Medicines Company, among others. Please visit for more information on Captisol. For more information on Ligand, please visit .