Osteoporosis & bone health

Association between renal function and fracture incidence during treatment with teriparatide or alendronate: an exploratory subgroup analysis of the Japanese Osteoporosis Intervention Trial-05

Osteoporos IntPublished Secondary analysis of the JOINT-05 randomised trial

Authors' conclusion

This exploratory analysis showed that fracture incidence on ALN was constant regardless of renal function. It also suggested that the incidence of vertebral fractures on TPTD-ALN was lower than ALN monotherapy in CKD 1/2 patients.

Study context

Population
Elderly Japanese women at high fracture risk in JOINT-05; subgroups by baseline chronic kidney disease (CKD): CKD 1/2 (estimated glomerular filtration rate (eGFR) ≥ 60 mL/min/1.73 m²), CKD 3a (eGFR 45–59), CKD 3b/4 (eGFR < 45)
Participants
483 vs 496
Comparison
Once-weekly TPTD for 72 weeks followed by alendronate (ALN) for 48 weeks vs ALN monotherapy for 120 weeks
  • TPTD-ALNn = 483
  • ALNn = 496reference
Primary endpoint
Incidences of vertebral fractures including morphometric fractures, non-vertebral fractures and all fractures, by baseline CKD stage
Methodological detailsexploratory subgroup analysis, subgroups by baseline CKD status (eGFR)
  • Exploratory subgroup analysis
  • Subgroups by baseline CKD status (eGFR)

Primary result

As reported in the abstract

Vertebral fractures in CKD 1/2 (N = 556; 90 morphometric vertebral fractures)
  • Non-vertebral fractures in CKD 3b/4 (N = 112; 10 non-vertebral fractures): incidence lower with ALN than TPTD-ALN, although the number of fractures was small
  • In ALN, incidences of vertebral, non-vertebral and all fractures constant across CKD stages
  • TPTD-ALN vs ALN: P = 0.01
  • Exploratory subgroup analysis

Further findings

Baseline associations

Higher CKD stages associated with age and number of prevalent vertebral fractures

Original publication

Association between renal function and fracture incidence during treatment with teriparatide or alendronate: an exploratory subgroup analysis of the Japanese Osteoporosis Intervention Trial-05. Osteoporos Int. Published 30 September 2024. doi:10.1007/s00198-024-07260-9

Composed by AI from the published abstract and checked against it. How Briefs are made →

Get them every week

New studies on this topic in My Week and in your Monday e-mail.

We e-mail you a sign-in link and a code. No password, no spam.