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Anti-cN1A Antibodies Are Associated with More Severe Dysphagia in Sporadic Inclusion Body Myositis

In recent years, an autoantibody directed against the 5′-citosolic nucleotidase1A (cN1A) was identified in the sera of sporadic inclusion body myositis (s-IBM) patients with widely variable sensitivity (33%–76%) and specificity (87%–100%). We assessed the sensitivity/specificity of anti-cN1A antibod...

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Autores principales: Lucchini, Matteo, Maggi, Lorenzo, Pegoraro, Elena, Filosto, Massimiliano, Rodolico, Carmelo, Antonini, Giovanni, Garibaldi, Matteo, Valentino, Maria Lucia, Siciliano, Gabriele, Tasca, Giorgio, De Arcangelis, Valeria, De Fino, Chiara, Mirabella, Massimiliano
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8151681/
https://www.ncbi.nlm.nih.gov/pubmed/34068623
http://dx.doi.org/10.3390/cells10051146
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author Lucchini, Matteo
Maggi, Lorenzo
Pegoraro, Elena
Filosto, Massimiliano
Rodolico, Carmelo
Antonini, Giovanni
Garibaldi, Matteo
Valentino, Maria Lucia
Siciliano, Gabriele
Tasca, Giorgio
De Arcangelis, Valeria
De Fino, Chiara
Mirabella, Massimiliano
author_facet Lucchini, Matteo
Maggi, Lorenzo
Pegoraro, Elena
Filosto, Massimiliano
Rodolico, Carmelo
Antonini, Giovanni
Garibaldi, Matteo
Valentino, Maria Lucia
Siciliano, Gabriele
Tasca, Giorgio
De Arcangelis, Valeria
De Fino, Chiara
Mirabella, Massimiliano
author_sort Lucchini, Matteo
collection PubMed
description In recent years, an autoantibody directed against the 5′-citosolic nucleotidase1A (cN1A) was identified in the sera of sporadic inclusion body myositis (s-IBM) patients with widely variable sensitivity (33%–76%) and specificity (87%–100%). We assessed the sensitivity/specificity of anti-cN1A antibodies in an Italian cohort of s-IBM patients, searching for a potential correlation with clinical data. We collected clinical data and sera from 62 consecutive s-IBM patients and 62 other inflammatory myopathies patients. Testing for anti-cN1A antibodies was performed using a commercial ELISA. Anti-cN1A antibodies were detected in 23 s-IBM patients, resulting in a sensitivity of 37.1% with a specificity of 96.8%. Positive and negative predictive values were 92.0% and 60.6%, respectively. We did not find significant difference regarding demographic variables, nor quadriceps or finger flexor weakness. Nevertheless, we found that anti-cN1A-positive patients presented significantly lower scores in IBMFRS item 1 (swallowing, p = 0.045) and more frequently reported more severe swallowing problems, expressed as an IBMFRS item 1 score ≤ 2 (p < 0.001). We confirmed the low sensitivity and high specificity of anti-cN1A Ab in s-IBM patients with a high positive predictive value. The presence of anti-CN1A antibodies identified patients with a greater risk of more severe dysphagia.
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spelling pubmed-81516812021-05-27 Anti-cN1A Antibodies Are Associated with More Severe Dysphagia in Sporadic Inclusion Body Myositis Lucchini, Matteo Maggi, Lorenzo Pegoraro, Elena Filosto, Massimiliano Rodolico, Carmelo Antonini, Giovanni Garibaldi, Matteo Valentino, Maria Lucia Siciliano, Gabriele Tasca, Giorgio De Arcangelis, Valeria De Fino, Chiara Mirabella, Massimiliano Cells Article In recent years, an autoantibody directed against the 5′-citosolic nucleotidase1A (cN1A) was identified in the sera of sporadic inclusion body myositis (s-IBM) patients with widely variable sensitivity (33%–76%) and specificity (87%–100%). We assessed the sensitivity/specificity of anti-cN1A antibodies in an Italian cohort of s-IBM patients, searching for a potential correlation with clinical data. We collected clinical data and sera from 62 consecutive s-IBM patients and 62 other inflammatory myopathies patients. Testing for anti-cN1A antibodies was performed using a commercial ELISA. Anti-cN1A antibodies were detected in 23 s-IBM patients, resulting in a sensitivity of 37.1% with a specificity of 96.8%. Positive and negative predictive values were 92.0% and 60.6%, respectively. We did not find significant difference regarding demographic variables, nor quadriceps or finger flexor weakness. Nevertheless, we found that anti-cN1A-positive patients presented significantly lower scores in IBMFRS item 1 (swallowing, p = 0.045) and more frequently reported more severe swallowing problems, expressed as an IBMFRS item 1 score ≤ 2 (p < 0.001). We confirmed the low sensitivity and high specificity of anti-cN1A Ab in s-IBM patients with a high positive predictive value. The presence of anti-CN1A antibodies identified patients with a greater risk of more severe dysphagia. MDPI 2021-05-10 /pmc/articles/PMC8151681/ /pubmed/34068623 http://dx.doi.org/10.3390/cells10051146 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lucchini, Matteo
Maggi, Lorenzo
Pegoraro, Elena
Filosto, Massimiliano
Rodolico, Carmelo
Antonini, Giovanni
Garibaldi, Matteo
Valentino, Maria Lucia
Siciliano, Gabriele
Tasca, Giorgio
De Arcangelis, Valeria
De Fino, Chiara
Mirabella, Massimiliano
Anti-cN1A Antibodies Are Associated with More Severe Dysphagia in Sporadic Inclusion Body Myositis
title Anti-cN1A Antibodies Are Associated with More Severe Dysphagia in Sporadic Inclusion Body Myositis
title_full Anti-cN1A Antibodies Are Associated with More Severe Dysphagia in Sporadic Inclusion Body Myositis
title_fullStr Anti-cN1A Antibodies Are Associated with More Severe Dysphagia in Sporadic Inclusion Body Myositis
title_full_unstemmed Anti-cN1A Antibodies Are Associated with More Severe Dysphagia in Sporadic Inclusion Body Myositis
title_short Anti-cN1A Antibodies Are Associated with More Severe Dysphagia in Sporadic Inclusion Body Myositis
title_sort anti-cn1a antibodies are associated with more severe dysphagia in sporadic inclusion body myositis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8151681/
https://www.ncbi.nlm.nih.gov/pubmed/34068623
http://dx.doi.org/10.3390/cells10051146
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