Article (Scientific journals)
Diagnostic Accuracy of Noninvasive Bone Turnover Markers in Renal Osteodystrophy.
Jørgensen, Hanne Skou; Behets, Geert; Viaene, Liesbeth et al.
2022In American Journal of Kidney Diseases, 79 (5), p. 667-676
Peer reviewed
 

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Keywords :
Alkaline phosphatase; Bone histomorphometry; Chronic kidney disease – mineral and bone disorder; Kidney transplantation; Parathyroid hormone; Sensitivity and specificity; Tartrate-Resistant Acid Phosphatase
Abstract :
[en] RATIONALE & OBJECTIVE: Bone biopsy remains the gold standard for diagnosing renal osteodystrophy as comparable non-invasive alternatives have yet to be established. The aim of this study was to investigate the diagnostic accuracy of biochemical markers of skeletal remodeling to predict bone turnover. STUDY DESIGN: Cross-sectional retrospective diagnostic test study. SETTING & PARTICIPANTS: Patients with chronic kidney disease stages G4-G5D and kidney transplant recipients with successful transiliac bone biopsies. TESTS COMPARED: Bone turnover as determined by bone histomorphometry was compared to the following biochemical markers: Full-length (1-84) parathyroid hormone (PTH), bone-specific alkaline phosphatase (BsAP), intact procollagen type I N-terminal propeptide (PINP), and tartrate-resistant acid phosphatase isoform 5b (TRAP5b). OUTCOME: Diagnostic performance was evaluated by area under the receiver operator characteristics curve (AUC), sensitivity, specificity, and negative and positive predictive values. Optimal diagnostic cutoffs were determined in an exploration cohort (n=100) and validated in a separate cohort (n=99). RESULTS: All biomarkers differed across categories of low 33 (17%), normal 109 (55%), and high 57 (29%) bone turnover. AUC values were in the range of 0.75 - 0.85. High negative predictive values (≥90%) were found for both high and low bone turnover, indicating the ability to rule out both conditions using the suggested biomarker cutoffs. The highest diagnostic performances were seen with combinations of biomarkers, with overall diagnostic accuracies of 90% for high turnover, and 78% for low turnover. Results were comparable for kidney transplant candidates and recipients in a sensitivity analysis. LIMITATIONS: The single-center approach and heterogeneity of the study cohort are main limitations of this study. CONCLUSIONS: We conclude that the diagnostic performance of biochemical markers of bone turnover is acceptable, with clinical utility in ruling out both high and low turnover bone disease.
Disciplines :
Laboratory medicine & medical technology
Author, co-author :
Jørgensen, Hanne Skou
Behets, Geert
Viaene, Liesbeth
Bammens, Bert
Claes, Kathleen
Meijers, Bjorn
Naesens, Maarten
Sprangers, Ben
Kuypers, Dirk
Cavalier, Etienne  ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
D'Haese, Patrick
Evenepoel, Pieter
Language :
English
Title :
Diagnostic Accuracy of Noninvasive Bone Turnover Markers in Renal Osteodystrophy.
Publication date :
May 2022
Journal title :
American Journal of Kidney Diseases
ISSN :
0272-6386
eISSN :
1523-6838
Volume :
79
Issue :
5
Pages :
667-676.
Peer reviewed :
Peer reviewed
Commentary :
Copyright © 2021. Published by Elsevier Inc.
Available on ORBi :
since 31 December 2021

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