Multicenter prospective study on multivariant diagnostics of autoimmune bullous dermatoses using the BIOCHIP technology

Nina van Beek, Stine Krüger, Tarek Fuhrmann, Susanne Lemcke, Stephanie Goletz, Christian Probst, Lars Komorowski, Giovanni Di Zenzo, Marian Dmochowski, Kossara Drenovska, Michael Horn, Hana Jedlickova, Cezary Kowalewski, Ljiljana Medenica, Dedee Murrell, Aikaterini Patsatsi, Shamir Geller, Soner Uzun, Snejina Vassileva, Xuejun ZhuKai Fechner, Detlef Zillikens, Winfried Stöcker, Enno Schmidt, Kristin Rentzsch

Research output: Contribution to journalArticlepeer-review

Abstract

Background: The current standard in the serologic diagnosis of autoimmune bullous diseases (AIBD) is a multistep procedure sequentially applying different assays. In contrast, the BIOCHIP Mosaic technology combines multiple substrates for parallel analysis by indirect immunofluorescence. Methods: Sera from 749 consecutive, prospectively recruited patients with direct immunofluorescence–positive AIBD from 13 international study centers were analyzed independently and blinded by using (1) a BIOCHIP Mosaic including primate esophagus, salt-split skin, rat bladder, monkey liver, monkey liver with serosa, recombinant BP180 NC16A, and gliadin GAF3X, as well as HEK293 cells expressing recombinant desmoglein 1, desmoglein 3, type VII collagen, and BP230 C-terminus and (2) the conventional multistep approach of the Department of Dermatology, University of Lübeck. Results: In 731 of 749 sera (97.6%), specific autoantibodies could be detected with the BIOCHIP Mosaic, similar to the conventional procedure (725 cases, 96.8%). The Cohen κ for both serologic approaches ranged from 0.84 to 1.00. In 6.5% of sera, differences between the 2 approaches occurred and were mainly attributed to autoantigen fragments not present on the BIOCHIP Mosaic. Limitations: Laminin 332 and laminin γ1 are not represented on the BIOCHIP Mosaic. Conclusions: The BIOCHIP Mosaic is a standardized time- and serum-saving approach that further facilitates the serologic diagnosis of AIBD.

Original languageEnglish
Pages (from-to)1315-1322
Number of pages8
JournalJournal of the American Academy of Dermatology
Volume83
Issue number5
DOIs
Publication statusPublished - Nov 2020

Keywords

  • autoimmune bullous diseases
  • biochip
  • immunofluorescence
  • pemphigoid
  • pemphigus

ASJC Scopus subject areas

  • Dermatology

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