International validation of the Bullous Pemphigoid Disease Area Index severity score and calculation of cut‐off values for defining mild, moderate and severe types of bullous pemphigoid*
Autor: | Pascal Joly, Catherine Prost-Squarcioni, Aikaterini Patsatsi, Dimitra Kiritsi, Snejina Vassileva, Patrice Plantin, L. Friedrichsen, Fabienne Jouen, W. Masmoudi, A. Zebrowska, S. Hofmann, V Ferranti, N. Litrowski, Gaëlle Quéreux, Vivien Hébert, D. Kottler, Sophie Duvert-Lehembre, M. Vaillant, C. Abasq, C. Moltrasio |
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Rok vydání: | 2020 |
Předmět: |
Pemphigoid
medicine.medical_specialty Percentile Dystonin Intraclass correlation Enzyme-Linked Immunosorbent Assay Dermatology Autoantigens Severity of Illness Index Gastroenterology 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine Interquartile range Internal medicine Pemphigoid Bullous Severity of illness medicine Humans Autoantibodies business.industry Reproducibility of Results Non-Fibrillar Collagens medicine.disease Europe Quartile Cut-off Bullous pemphigoid business |
Zdroj: | British Journal of Dermatology. 184:1106-1112 |
ISSN: | 1365-2133 0007-0963 |
Popis: | BACKGROUND The Bullous Pemphigoid Disease Area Index (BPDAI) score has been proposed to provide an objective measure of bullous pemphigoid (BP) activity. OBJECTIVES The objective of this study was to calculate BPDAI cut-off values defining mild, moderate and severe BP. We also aimed to assess the interrater reliability and correlation with the number of daily new blisters, and anti-BP180 and anti-BP230 antibodies. METHODS Severity scores were recorded by two blinded investigators. Anti-BP180 and anti-BP230 antibodies were measured using an enzyme-linked immunosorbent assay (ELISA). Cut-off values defining mild, moderate and severe subgroups were calculated based on the 25th and 75th percentiles of the BPDAI score. RESULTS In total, 285 patients with BP were enrolled from 50 dermatology departments in Europe. Median BPDAI activity was 37·5 points (range 0-164). Cut-off values corresponding to the first and third quartiles of the BPDAI score were 20 and 57, respectively; thus, these values were used to define mild (≤ 19), moderate (≥ 20 and ≤ 56) and severe (≥ 57) BP. The median BPDAI score for patients with ≤ 10 daily new blisters was 26 [interquartile range (IQR) 17-45], and for patients with > 10 daily new blisters the median score was 55 (IQR 39-82). The BPDAI intraclass correlation coefficient measured at baseline was 0·97 and remained higher than 0·90 up to month 6. The improvement in the BPDAI score was correlated with the absolute decrease in anti-BP180 ELISA value (Spearman's rank r = 0·34, P |
Databáze: | OpenAIRE |
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