Wednesday, November 27, 2013

Osteoporosis drugs compared for side effects, efficacy in Loyola study

Findings to help physicians guide treatment options for women

MAYWOOD – A study comparing the efficacy and tolerability of two popular osteoporosis drugs, denosumab and zoledronic acid, found that denosumab had a significantly greater effect on increasing spine bone mineral density and zoledronic acid caused more flulike symptoms. These findings were presented recently at the American Society for Bone and Mineral Research’s annual meeting.

Researchers performed a retrospective chart review and survey of 107 patients to compare the efficacy, patient satisfaction, cost and known adverse effects of denosumab versus zoledronic acid, including muscle pain, back pain and flulike symptoms. The denosumab and zoledronic acid groups were statistically similar in all areas but spine bone mineral density (increased 0.060 g/cm2 versus 0.021  g/cm2, respectively) and flulike symptoms (none versus 29 percent of patients).

“Both groups of patients were satisfied with their treatment despite the discrepancies in the drugs,” said Kellen Sheedy, first author and Stritch School of Medicine student.

The FDA approved denosumab in 2010 for postmenopausal women with osteoporosis. It is injected subcutaneously (60 mg) every six months. The treatment works by inhibiting bone loss and fracture risk.

Zoledronic acid was approved by the FDA in 2007 for osteoporosis. This treatment is administered intravenously (5 mg) once every 12 months. It is the most potent of the drugs in its class, and it works by interfering with the bone-breakdown process.

“This study helped us quantify the efficacy and adverse effects of these two drugs providing further guidance for physicians who prescribe these treatments,” said Pauline Camacho, MD, study investigator and director of the Osteoporosis & Metabolic Bone Disease Center at Loyola University Health System. “While this was the first head-to-head comparison of these two treatments, larger prospective studies will be needed to confirm these findings.”

About Loyola University Health System

Loyola University Health System (LUHS) is a member of Trinity Health. Based in the western suburbs of Chicago, LUHS is a quaternary care system that includes Loyola University Medical Center (LUMC), located on a 61-acre campus in Maywood, Gottlieb Memorial Hospital (GMH), on a 36-acre campus in Melrose Park, and convenient locations offering primary and specialty care services throughout Cook, Will and DuPage counties. At the heart of LUMC is a 547-licensed-bed hospital that houses the Center for Heart & Vascular Medicine, the Cardinal Bernardin Cancer Center, a Level 1 trauma center, a burn center, a children's hospital, Loyola Outpatient Center, and Loyola Oral Health Center. The campus also is home to Loyola University Chicago Stritch School of Medicine, Loyola University Chicago Marcella Niehoff School of Nursing and the Loyola Center for Fitness. The GMH campus includes a 254-licensed-bed community hospital, a Professional Office Building with 150 private practice clinics, an adult day care program, the Gottlieb Center for Fitness, the Loyola Center for Metabolic Surgery and Bariatric Care and the Loyola Cancer Care & Research at the Marjorie G. Weinberg Cancer Center at Melrose Park.

Trinity Health is one of the largest multi-institutional Catholic health care delivery systems in the nation. It serves people and communities in 22 states from coast to coast with 93 hospitals, and 120 continuing care locations — including home care, hospice, PACE and senior living facilities — that provide nearly 2.5 million visits annually.