Reference : Monthly oral ibandronate is well tolerated and efficacious in postmenopausal women: Resu...
Scientific journals : Article
Human health sciences : Endocrinology, metabolism & nutrition
Monthly oral ibandronate is well tolerated and efficacious in postmenopausal women: Results from the monthly oral pilot study
Reginster, Jean-Yves mailto [Université de Liège - ULg > Département des sciences de la santé publique > Epidémiologie et santé publique >]
Wilson, K. M. [> > > >]
Dumont, Etienne [> > > >]
Bonvoisin, B. [> > > >]
Barrett, J. [> > > >]
Journal of Clinical Endocrinology and Metabolism
Endocrine Soc
Yes (verified by ORBi)
Chevy Chase
[en] Context: Ibandronate, a potent, nitrogen-containing bisphosphonate developed for intermittent administration in postmenopausal osteoporosis, aims to overcome current adherence issues with daily and weekly oral bisphosphonates through once-monthly oral dosing. Objective: The purpose of this study was to investigate the safety, pharmacodynamics, and pharmacokinetics of once-monthly oral ibandronate. Design: A randomized, 3-month, double-blind, placebo-controlled, phase I study (Monthly Oral Pilot Study) was conducted. Setting: The study was conducted at five clinical trial centers in the United Kingdom and Belgium. Patients or Other Participants: Subjects were postmenopausal women (age, 55 - 80 yr; >= 3 yr post menopause; n = 144). Intervention(s): Once-monthly oral ibandronate 50, 100, or 150 mg or placebo was used. After the first cycle, the 50-mg arm was split, with participants continuing on either 50 or 100 mg. Main Outcome Measure(s): Primary outcome measures were safety, serum and urinary C-telopeptide (CTX), and serum ibandronate AUC(0-infinity). Results: Once- monthly oral ibandronate was well tolerated, with a similar overall and upper gastrointestinal safety profile to placebo. Once- monthly ibandronate was also highly effective in decreasing bone turnover; substantial reductions from baseline in serum CTX (-56.7% and -40.7% in the 150- and 100- mg arms, respectively; P < 0.001 vs. placebo) and urinary CTX (-54.1% and -34.6%, respectively; P < 0.001 vs. placebo) were observed at d 91 (30 d after the final dose). Analysis of the area under the effect curve (d1 - 91) for change from baseline (percent x days) in serum CTX and urinary CTX indicated a dose- response relationship. The AUC(0-infinity) for ibandronate increased with dose but not in a dose- proportional manner. Conclusions: These findings indicate a potential role for once-monthly oral ibandronate in the treatment of postmenopausal osteoporosis.

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