Vandana Mathur, Michael Walker, Steve Hasal, Guru Reddy, Shalabh Gupta
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引用次数: 0
Abstract
Purpose: Phosphate binders (PB) are integral to hyperphosphatemia management in patients with end-stage kidney disease. PB efficacy is adversely affected by nonadherence and limited phosphate-binding capacity relative to dietary intake. Oxylanthanum carbonate is an investigational novel nanotechnology product that combines lanthanum, which has the highest binding capacity of available PBs, with a smaller pill size that is swallowed with water rather than chewed. This study's objective was to demonstrate the pharmacodynamic equivalence of orally administered oxylanthanum carbonate to lanthanum carbonate (LC) in healthy subjects.
Methods: In this phase one, single-center, randomized, open-label study, healthy subjects were treated with oxylanthanum carbonate swallowable tablets 1000 mg three times/day and LC chewable tablets 1000 mg three times/day in a two-way crossover design. The primary pharmacodynamic variable was the least squares mean (LSM) change in urinary phosphate excretion from baseline to the evaluation period (Days 1-4 of treatment).
Findings: A total of 80 subjects were randomized and 75 received all doses. The LSM change in urinary phosphate excretion from Baseline to the Evaluation (Treatment) Period was similar for both oxylanthanum carbonate (-320.4 mg/day [90% CI: -349.7, -291.0]) and LC (-324.0 mg/day [90% CI: -353.3, -294.7]); the between-group LSM difference was 3.6 [90% CI: -37.8, 45.1] mg/day. Both drugs were well tolerated with an equal incidence of adverse events.
Implications: Thus, oxylanthanum carbonate was bioequivalent to LC in healthy subjects and well tolerated. Oral oxylanthanum carbonate may provide an option for patients with chronic kidney disease and hyperphosphatemia for whom chewing tablets is disliked, inconvenient, or difficult.
期刊介绍:
Clinical Therapeutics provides peer-reviewed, rapid publication of recent developments in drug and other therapies as well as in diagnostics, pharmacoeconomics, health policy, treatment outcomes, and innovations in drug and biologics research. In addition Clinical Therapeutics features updates on specific topics collated by expert Topic Editors. Clinical Therapeutics is read by a large international audience of scientists and clinicians in a variety of research, academic, and clinical practice settings. Articles are indexed by all major biomedical abstracting databases.