INDIANAPOLIS--9 Apr--PRNewswire-AsiaNet/InfoQuest
Phase III data, published online this week in the Journal of Clinical Endocrinology & Metabolism, showed that arzoxifene, an investigational selective estrogen receptor modulator (SERM) being developed by Eli Lilly and Company (NYSE: LLY), significantly increased lumbar spine and total hip bone mineral density (BMD) in postmenopausal women with normal or low bone mass, versus placebo.
In addition, arzoxifene, dosed at 20 mg/day, decreased biochemical markers of bone turnover, and showed a neutral effect on the uterus and endometrium.
"It is encouraging that arzoxifene showed the potential of bone loss prevention, with significant gains in BMD in the spine and hip areas in postmenopausal women in this study," said lead investigator Michael
Bolognese, M.D., Bethesda Health Research Center in Bethesda, Maryland. "I am pleased with the results from this study and believe that arzoxifene at 20 mg/day may be a therapeutic option worthy of continued development."
Arzoxifene is being studied for the prevention and treatment of osteoporosis in postmenopausal women and the reduction of risk of invasive breast cancer in postmenopausal women with osteoporosis or low bone mass.
These data are from the "FOUNDATION" Study, one of three Phase III trials for arzoxifene. In March, data from the second Phase III trial called "NEXT" study were presented at the European Society for Clinical and Economic Aspects of Osteoporosis and Osteoarthritis (ECCEO) annual meeting. The third Phase III trial, the "GENERATIONS" Study, is a five-year, randomized, double-blind, placebo-controlled study assessing the effects of arzoxifene on vertebral fracture incidence and on invasive breast cancer incidence in postmenopausal women with osteoporosis or with low bone density. Results from that trial are anticipated in late 2009.
About the "FOUNDATION" study
Effects of Arzoxifene on Bone Mineral Density and Endometrium in Postmenopausal Women with Normal or Low Bone Mass In this Phase III, double-blind, two-year, multi-center trial, 331 postmenopausal women with normal or low bone mass were randomized to receive arzoxifene 20 mg/day or placebo. All subjects received elemental calcium 500 mg/day. The study's primary endpoints were change in lumbar spine and total hip BMD, and endometrial safety measured by endometrial histology.
The study included women who were at least two years postmenopausal and between the ages of 45 and 60 with an intact uterus. Subjects' femoral neck or lumbar spine T-scores were between 0 and -2.5, and they did not have pre-existing spine fractures.
24-month results included:(1)
- Arzoxifene significantly increased the lumbar spine BMD by 2.9% vs placebo (arzoxifene, 1.6%; placebo, -1.3%, p