Osteoporosis, bone & mineral

Romosozumab in patients who experienced an on-study fracture: post hoc analyses of the FRAME and ARCH phase 3 trials

Osteoporos IntPublished Post hoc analysis of the FRAME and ARCH phase 3 randomised trials

Authors' conclusion

Data suggest support for the efficacy and safety of continuing romosozumab treatment following fracture.

Study context

Population
Postmenopausal women with osteoporosis who experienced on-study nonvertebral or new/worsening vertebral fracture by Month 12
Comparison
Romosozumab 210 mg monthly vs comparator (FRAME, placebo; ARCH, alendronate 70 mg weekly) for 12 months, then antiresorptive therapy, in patients with on-study fracture
Primary endpoint
Fracture incidence after on-study fracture
Follow-up
Through 36 months
Methodological detailsrandomized 1:1
  • Randomized 1:1

Primary result

As reported in the abstract

Recurrent nonvertebral fracture after on-study nonvertebral fracture by Month 12
GroupValueDenominator
Romosozumab (FRAME)3.6%56
Placebo (FRAME)9.2%76
Romosozumab (ARCH)10.0%70
Alendronate (ARCH)12.6%95

Value

Romosozumab (FRAME)3.6%
Placebo (FRAME)9.2%
Romosozumab (ARCH)10.0%
Alendronate (ARCH)12.6%

Denominator

Romosozumab (FRAME)56
Placebo (FRAME)76
Romosozumab (ARCH)70
Alendronate (ARCH)95

Further findings

Subsequent vertebral fracture after on-study nonvertebral fracture by Month 12 · through 36 months

Denominator Romosozumab (FRAME) 56 · Placebo (FRAME) 76 · Romosozumab (ARCH) 70 · Alendronate (ARCH) 95

Recurrent vertebral fracture after on-study vertebral fracture by Month 12 · through 36 months

Denominator Romosozumab (FRAME) 17 · Placebo (FRAME) 59 · Romosozumab (ARCH) 67 · Alendronate (ARCH) 100

Subsequent nonvertebral fracture after on-study vertebral fracture by Month 12 · through 36 months

Denominator Romosozumab (FRAME) 17 · Placebo (FRAME) 59 · Romosozumab (ARCH) 67 · Alendronate (ARCH) 100

On-study nonvertebral fracture by Month 12 (all randomised) · numerically lower

On-study vertebral fracture by Month 12 (all randomised) · numerically lower

BMD change

BMD gains numerically greater with romosozumab than comparators

Safety

Events

OutcomeRomosozumab (FRAME)Romosozumab (ARCH)
Fracture-related complications in patients with fracture by Month 1200

Fracture-related complications in patients with fracture by Month 12

No fracture-related complications reported in romosozumab-treated patients

Original publication

Romosozumab in patients who experienced an on-study fracture: post hoc analyses of the FRAME and ARCH phase 3 trials. Osteoporos Int. Published 4 April 2024. doi:10.1007/s00198-024-07049-w

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