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The Association Between Post-Kidney Transplant Persistent Hyperparathyroidism and Fracture Risk: A Longitudinal

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Kidney transplant recipients with persistent hyperparathyroidism (HPT) one year post-transplant face a significantly higher fracture risk. Early HPT management post-kidney transplant is crucial for reducing bone complications.

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Area of Science:

  • Nephrology
  • Endocrinology
  • Orthopedics

Background:

  • Persistent hyperparathyroidism (HPT) is common after kidney transplantation (KT) and may affect bone health.
  • The link between post-KT HPT and fracture risk remains unclear.

Purpose of the Study:

  • To determine the association between persistent HPT at 1-year post-KT and subsequent fracture risk in KT recipients.

Main Methods:

  • A prospective cohort study included 344 adult KT recipients.
  • Parathyroid hormone (PTH) levels were measured 1-year post-KT.
  • Fractures were tracked using ICD codes, and competing risk models analyzed the association between HPT (PTH ≥ 70 pg/mL) and fracture risk.

Main Results:

  • 66% of recipients had persistent HPT at 1-year post-KT.
  • Adjusted analysis revealed a 3.11-fold increased fracture risk in those with HPT.
  • No significant differences in this association were observed based on age, sex, race, eGFR, osteoporosis, or dialysis vintage.

Conclusions:

  • Persistent HPT 1-year post-kidney transplant is linked to a substantially higher risk of fractures.
  • Further research is needed to develop treatment guidelines for post-KT HPT to reduce fracture-related complications.