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Detection and kinetics of persistent neutralizing anti-interferon-beta antibodies in patients with multiple sclerosis. Results from the ABIRISK prospective cohort study.

J Neuroimmunol. 2018 Nov 07;326:19-27

Authors: Jensen PEH, Warnke C, Ingenhoven K, Piccoli L, Gasis M, Hermanrud C, Fernandez-Rodriguez BM, Ryner M, Kramer D, Link J, Ramanujam R, Auer M, Buck D, Grummel V, Bertotti E, Fissolo N, Oliver-Martos B, Nytrova P, Khalil M, Guger M, Rathmaier S, Sievers-Stober C, Lindberg RLP, Hässler S, Bachelet D, Aktas O, Donnellan N, Lawton A, Hemmer B, Havrdova EK, Kieseier B, Hartung HP, Comabella M, Montalban X, Derfuss T, Sellebjerg F, Dönnes P, Pallardy M, Spindeldreher S, Broët P, Deisenhammer F, Fogdell-Hahn A, Sorensen PS, ABIRISK Consortium

Abstract
Two validated assays, a bridging ELISA and a luciferase-based bioassay, were compared for detection of anti-drug antibodies (ADA) against interferon-beta (IFN-β) in patients with multiple sclerosis. Serum samples were tested from patients enrolled in a prospective study of 18 months. In contrast to the ELISA, when IFN-β-specific rabbit polyclonal and human monoclonal antibodies were tested, the bioassay was the more sensitive to detect IFN-β ADA in patients’ sera. For clinical samples, selection of method of ELISA should be evaluated prior to the use of a multi-tiered approach. A titer threshold value is reported that may be used as a predictor for persistently positive neutralizing ADA.

PMID: 30447419 [PubMed – as supplied by publisher]

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