Osteoporosis & bone health

The effect of romosozumab on bone mineral density depending on prior treatment: a prospective, multicentre cohort study in Switzerland

Osteoporos IntPublished Prospective cohort study

Authors' conclusion

Prior antiresorptive therapy blunted the BMD response to romosozumab, and the duration was correlated with BMD changes at both the lumbar spine and total hip.

Study context

Population
High-risk osteoporosis patients receiving romosozumab in a nationwide Swiss osteoporosis registry (92 women, 7 men; median age 71 years [65, 76]), enrolled January 2021 to December 202392 women and 7 men
Participants
99 patients
Exposure
Romosozumab for 12 months in pre-treated vs treatment-naïve patients
  • Pre-treatedn = 77
  • Treatment naïven = 22reference
Outcome
BMD change on romosozumab, taking into account prior therapies
Follow-up
12 months
Methodological detailsmulticentre, nationwide Swiss osteoporosis registry
  • Multicentre
  • Nationwide Swiss osteoporosis registry

Main finding

As reported in the abstract

BMD change on romosozumab, all patients

Lumbar spine bone mineral density (BMD) change

10.3%

7.5, 15.5

Total hip BMD change

3.1%

1.1, 5.8

Femoral neck BMD change

3.1%

0.5, 5.3

Observational data: associations, not effects.

Further findings

Other predictors of BMD change

Total hip: baseline hip T-scores, BMI and baseline CTX
Lumbar spine: baseline lumbar spine T-score, age and baseline CTX

Original publication

The effect of romosozumab on bone mineral density depending on prior treatment: a prospective, multicentre cohort study in Switzerland. Osteoporos Int. Published 26 June 2024. doi:10.1007/s00198-024-07155-9

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