| Naslov: | Verification, implementation and harmonization of automated chemiluminescent immunoassays for MPO- and PR3-ANCA detection |
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| Avtorji: | ID Ogrič, Manca (Avtor)
ID Švec, Tinka (Avtor)
ID Mrak Poljšak, Katjuša (Avtor)
ID Žigon, Polona (Avtor)
ID Hočevar, Alojzija (Avtor)
ID Čučnik, Saša (Avtor) |
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| Datoteke: |  PDF - Predstavitvena datoteka, prenos (514,85 KB)
MD5: E6E9F0F9C540CDE90EF8D1FF1CF177C2
 URL - Izvorni URL, za dostop obiščite https://www.degruyter.com/document/doi/10.1515/cclm-2023-0764/html
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| Jezik: | Angleški jezik |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: |  UKC LJ - Univerzitetni klinični center Ljubljana
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| Povzetek: | Objectives: Antineutrophil cytoplasmic antibody (ANCA) testing assists clinicians diagnose ANCA-associated vasculitis (AAV). We aimed to verify and harmonize chemiluminescent immunoassays for the detection of myeloperoxidase (MPO)- and proteinase 3 (PR3)-ANCA. Methods: An in-house ELISA, a capture ELISA, and a chemiluminescent assay QUANTA Flash on a BIO-FLASH analyzer were used to detect MPO- and PR3-ANCA in sera from 39 patients with AAV, 55 patients with various non-AAV, and 66 patients with connective tissue diseases. The results of the assays were evaluated, and their clinical performance was assessed. The precision and linearity of the QUANTA Flash assays were determined, and likelihood ratios (LRs) for AAV at diagnosis were calculated. Results: The precision and linearity of the QUANTA Flash assays were confirmed. Overall agreement between 97.5 and 98.8 % and Cohen's kappa coefficients between 0.861 and 0.947 were observed for the results of the QUANTA Flash assays and ELISAs. The diagnostic sensitivity, specificity, and ROC analysis of the assays for AAV were statistically similar (in-house ELISA 89.7 %, 95.0 %, and 0.937; capture ELISA 92.3 %, 98.3 %, and 0.939; and QUANTA Flash 89.7 %, 95.9 %, and 0.972). For the QUANTA Flash assay results, the interval-specific LRs for AAV at diagnosis were: 0-8 CU had LR 0.08, 8-29 CU had LR 1.03, 29-121 CU had LR 7.76, 121-191 CU had LR 12.4, and >191 CU had LR ∞. Conclusions: The QUANTA Flash MPO and PR3 assays provide precise and consistent results and have comparable clinical utility for AAV. The calculated LRs were consistent with published LRs, confirming the utility of LRs for harmonization of ANCA results. |
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| Ključne besede: | antineutrophil cytoplasmic antibodies (ANCA), proteinase 3 (PR3), myeloperoxidase (MPO), ANCA-associated vasculitis (AAV), chemiluminescent immunoassay, likelihood ratios (LRs) |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Leto izida: | 2023 |
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| Št. strani: | str. 682-689 |
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| Številčenje: | Vol. 62 [article no.] 0764, iss. 4 |
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| PID: | 20.500.12556/DiRROS-32092  |
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| UDK: | 616-097 |
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| ISSN pri članku: | 1437-4331 |
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| DOI: | 10.1515/cclm-2023-0764 |
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| COBISS.SI-ID: | 169691907 |
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| Opomba: | Nasl. z nasl. zaslona;
Opis vira z dne: 24. 10. 2023;
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| Datum objave v DiRROS: | 27.08.2026 |
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| Število ogledov: | 141 |
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| Število prenosov: | 82 |
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| Metapodatki: |    |
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