Abstract
Introduction
This post hoc analysis of the placebo-controlled phase 3 FRAME study assessed the efficacy and safety of romosozumab in a subpopulation of Japanese postmenopausal women with osteoporosis and chronic kidney disease (CKD).
Materials and methods
Data were analyzed by baseline estimated glomerular filtration rate (eGFR), where < 90 mL/min/1.73 m2 denoted CKD and ≥ 90 mL/min/1.73 m2 indicated normal renal function. Efficacy outcomes included percent change in lumbar spine, total hip, and femoral neck bone mineral density (BMD) at 12 months from baseline (primary) and incidence of new vertebral and non-vertebral fractures. Tolerability was also assessed.
Results
Of 489 Japanese patients with available eGFR data, 339 had mild-to-moderate CKD (romosozumab, n = 170; placebo, n = 169) and 150 had normal renal function (romosozumab, n = 75; placebo, n = 75). Compared with placebo, romosozumab increased lumbar spine BMD by 14.8% (95% confidence interval [CI] 13.7–15.9) and 15.2% (95% CI 13.4–16.9) in the eGFR < 90 and ≥ 90 mL/min/1.73 m2 subgroups, total hip BMD by 4.6% (95% CI 3.8–5.4) and 5.5% (95% CI 4.4–6.7), and femoral neck BMD by 4.0% (95% CI 2.9–5.2) and 5.5% (95% CI 3.8–7.1) at 12 months, respectively (all p < 0.001 vs. placebo). New vertebral fracture incidence was numerically lower with romosozumab than placebo at 12 months in both eGFR subgroups, while the incidence of adverse events was similar between subgroups.
Conclusion
Romosozumab for 12 months is an effective and well-tolerated treatment option for Japanese patients with osteoporosis and mild-to-moderate CKD.
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Acknowledgements
The authors wish to thank Marion Barnett, who wrote the outline of this manuscript on behalf of inScience Communications, Springer Healthcare, and Sarah Greig, Ph.D., of inScience Communications, Springer Healthcare, who wrote the first draft. This medical writing assistance was funded by Amgen K.K.
Funding
Amgen Inc., Astellas Pharma Inc., and UCB Pharma Inc. sponsored this study (NCT01575834).
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AM enrolled patients. EH provided the concept for the study and contributed to subgroup analysis study design, interpretation, preparation of discussion, and provision of references. CT was involved in conception and interpretation of the manuscript. KN contributed to the confirmation of the contents and interpretation of the safety results. JS performed the statistical analysis and provided interpretation. All authors read and approved drafts of the manuscript.
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A. Miyauchi received consulting fees from Amgen K.K., and Teijin Pharma. E. Hamaya, K. Nishi, and J. Shimauchi are employees of Amgen K.K., and E. Hamaya owns stock in Amgen Inc. C. Tolman is an employee of Amgen K.K. and owns stock in Amgen Inc.
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The trial was conducted according to the Declaration of Helsinki: ethical principles for medical research involving human subjects, and the study protocol was approved by the ethics committee or institutional review board at each study center. Informed consent was obtained from all individual participants included in the study.
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Miyauchi, A., Hamaya, E., Nishi, K. et al. Efficacy and safety of romosozumab among Japanese postmenopausal women with osteoporosis and mild-to-moderate chronic kidney disease. J Bone Miner Metab 40, 677–687 (2022). https://doi.org/10.1007/s00774-022-01332-8
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DOI: https://doi.org/10.1007/s00774-022-01332-8