期刊
FRONTIERS IN CARDIOVASCULAR MEDICINE
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fcvm.2022.817826
关键词
diagnostic accuracy; anti-Xa assay; laboratory monitoring; direct oral anticoagulants; rivaroxaban
资金
- Research Fund Haematology Cantonal Hospital Lucerne
- Swiss National Science Foundation [179334]
- Gottfried & Julia Bangerter-Rhyner-Stiftung
- Siemens Healthineers
In this study, a heparin-calibrated anti-Xa assay was found to accurately measure the drug concentrations of rivaroxaban, apixaban, and edoxaban, and correctly predict clinically relevant levels.
BackgroundApplying a single anti-Xa assay, calibrated to unfractionated heparin to measure rivaroxaban, apixaban, and edoxaban would simplify laboratory procedures and save healthcare costs. AimWe hypothesized that a heparin-calibrated anti-Xa assay would accurately measure rivaroxaban, apixaban, and edoxaban drug concentrations and correctly predict clinically relevant drug levels. MethodsThis analysis is part of the Simple-Xa study, a prospective multicenter cross-sectional study conducted in clinical practice. Patients treated with rivaroxaban, apixaban, or edoxaban were included. Anti-Xa activity was measured using the Siemens INNOVANCE(R) Heparin assay. Drug concentrations were determined using ultra-high performance liquid chromatography-tandem mass spectrometry (LC-MS/MS). Cut-off levels were determined in a derivation dataset (50% of patients) and sensitivities and specificities were calculated in a verification dataset (50% of patients). ResultsOverall, 845 patients were available for analysis. Correlation coefficients (r(s)) between the heparin-calibrated anti-Xa assay and drug concentrations were 0.97 (95% CI 0.97, 0.98) for rivaroxaban, 0.96 (0.96, 0.97) for apixaban, and 0.96 (0.94, 0.99) for edoxaban. The area under the receiver operating characteristics curve (ROC) was 0.99 for all clinically relevant drug concentrations. In the verification dataset, the sensitivity was 94.2% (95% CI 90.8-96.6) for 30 mu g L-1, 95.8% (92.4-98.0) for 50 mu g L-1, and 98.7% (95.5-99.9) for 100 mu g L-1. Specificities were 86.3% (79.2-91.7), 89.8% (84.5-93.7), and 88.7% (84.2-92.2), respectively. ConclusionIn a large prospective study in clinical practice, a strong correlation of heparin-calibrated anti-Xa measurements with LC-MS/MS results was observed and clinically relevant drug concentrations were predicted correctly.
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