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  • Title: Potency of a combined alfacalcidol-alendronate therapy to reduce the risk of falls and fractures in elderly patients with glucocorticoid-induced osteoporosis.
    Author: Ringe JD, Schacht E, Dukas L, Mazor Z.
    Journal: Arzneimittelforschung; 2011; 61(2):104-11. PubMed ID: 21428245.
    Abstract:
    This is a preplanned subgroup analysis on 318 patients with glucocorticoid-induced osteoporosis (GIOP) from an open, prospective, multi-centered, uncontrolled study on a large cohort of elderly patients with a high risk of falls and fractures. The entire group of 2579 patients was recruited by 818 practicing physicians and treated for three months with a new combination package containing 4 or 12 self-explanatory one-week blisters, each with one tablet of 70 mg alendronate (CAS 260055-05-8) and 7 capsules of 1 pg alfacalcidol (CAS 41294-56-8) (Tevabone"). The average age of the GIOP patients was 71 years and the mean body mass index 26.7 kg/m2. 58% had a diagnosis of increased risk of falls, prevalent vertebral and non-vertebral fractures were documented in 70% and 65% of the patients, respectively, and a creatinine clearance (CrCl) below 65 ml/min was documented in 55 %. Main outcome parameters were the Chair Rising Test (CRT), Timed Up and Go Test (TUG), back pain and safety at onset and after 3 months. In addition, an evaluation of the package design was done at the end of the study. The percentage of patients able to perform the CRT within 10 sec increased from 21.1% to 39.4% after 3 months (increase 87%, p < 0.0001), while successful performance of TUG within 10 sec increased by 84% (p < 0.0001) from 23.1% at onset to 42.4% after 3 months. The mean time required to perform the CRT decreased after 3 months from an average of 15.92 to 14.02 sec (p = 0.0025) (difference of 1.9 sec) and for the TUG the mean time decreased from 16.86 sec to 14.64 sec (p = 0.0056) (difference of 2.2 sec). Mean back pain measured by a 0-10 visual analogue scale decreased significantly by 43% from 6.0 to 3.4 (p < 0.0001). Throughout the study 23 adverse events (AE) were reported in 11 of the 318 GIOP patients (incidence: 3.5 %). There were no patients who experienced serious AE. Patients using the new combined regimen of alfacalcidol plus alendronate for treating GIOP achieved significant improvements in CRT, TUG and back pain already after 3 months, with a high safety profile and good compliance. This may contribute to the previously shown significant effect on reducing falls and fractures with the same regimen during a controlled long-term trial in primary osteoporosis.
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