Romosozumab Efficacy in Postmenopausal Women With No Prior Fracture Who Fulfill Criteria for Very High Fracture Risk
Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists(2023)
Abstract
Objective: We evaluated the efficacy of romosozumab in women from FRAME who had no prior fracture but met other criteria for very high fracture risk (VHFR). Methods: In FRAME, postmenopausal women received romosozumab or placebo for 12 months (year 1) followed by denosumab for 12 months (year 2). In this post hoc analysis, we applied the following criteria from the American Association of Clinical Endocrinology to define VHFR: lumbar spine or total hip T-score <-3.0 and/or Fracture Risk Assessment Tool probability of major osteo-porotic fracture >30% or hip fracture >4.5% to women with no fracture history at baseline (no fracture-VHFR [NF-VHFR]). Incidence of new vertebral, clinical, and nonvertebral fractures and mean bone mineral density (BMD) percentage change from baseline were assessed at years 1 and 2. Results: Of the 7180 women in FRAME, 2825 were included in the NF-VHFR subgroup analysis. At year 1, romosozumab versus placebo reduced the incidence of new vertebral fracture (relative risk reduction [RRR]: 76%), clinical fracture (RRR: 60%), and nonvertebral fracture (RRR: 54%) (all P <.05). This fracture reduction was maintained through year 2 in women receiving the romosozumab-to-denosumab sequence versus the placebo-to-denosumab sequence for new vertebral, clinical, and nonvertebral fractures (RRR: 77%, 54%, and 46%, respectively; all P <.05). The mean BMD changes in both treatment groups were similar to those in the overall FRAME population at years 1 and 2. Conclusion: Romosozumab significantly reduced vertebral, clinical, and nonvertebral fracture risk and increased the BMD more than placebo in women at VHFR. (c) 2023 AACE. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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Key words
American Association of Clinical Endocrinology (AACE),bone mineral density (BMD),osteoporosis,very high fracture risk (VHFR),treatment sequence
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