@article{10902/32669,
year = {2024},
url = {https://hdl.handle.net/10902/32669},
abstract = {ANCA-associated vasculitis (AAV) comprises a group of necrotizing vasculitis that mainly affects small- and medium-sized vessels. Serum anti-neutrophil cytoplasmic antibodies (ANCA), mainly anti-myeloperoxidase (anti-MPO) and anti-proteinase 3 (anti-PR3), levels may correlate to severity, prognosis, and recurrence of the disease. A retrospective analysis of 101 patients with MPO-positive and 54 PR3-positive vasculitis was performed, using laboratory established cut-off value, measured by chemiluminescence. Furthermore, data of renal disease and pulmonary involvement were collected at vasculitis diagnosis, as well as the progress, requiring dialysis, transplant, or mortality. For anti-MPO antibodies with a diagnosis of vasculitis (n=77), an area under the curve (AUC) was calculated (AUC=0.8084), and a cut-off point of 41.5 IU/ml was determined. There were significant differences in anti-MPO levels between patients with renal or pulmonary dysfunction (n=65) versus those without them (n=36) (p=0.0003), and a cut-off threshold of 60 IU/ml was established. For anti-PR3 antibodies with a diagnosis of vasculitis (n=44), an area under the curve (AUC) was calculated (AUC=0.7318), and a cut-off point of 20.5 IU/ml was determined. Significant differences in anti-PR3 levels were observed between those patients with renal or pulmonary dysfunction (n=30) and those without them (n=24) (p=0.0048), and a cut-off threshold of 41.5 IU/ml was established. No significant differences between those patients who had a worse disease progression and those who did not were found for anti-MPO and anti-PR3. Anti-MPO and anti-PR3 levels at the moment of vasculitis diagnosis are related with disease severity but not with disease outcome or vasculitis recurrence.},
organization = {Funding: Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature.},
publisher = {Springer International Publishing},
publisher = {Immunologic Research, 2024, 72, 128-133},
title = {ANCA detection with solid phase chemiluminescence assay: diagnostic and severity association in vasculitis},
author = {Renuncio-García, Mónica and Calvo del Río, Vanesa and Benavides-Villanueva, Fabricio and Al Fazazi, Salma and Rodríguez-Vidriales, María and Escagedo-Cagigas, Clara and Martín Penagos, Luis and Irure Ventura, Juan and López Hoyos, Marcos and Blanco Alonso, Ricardo},
}