Abstract
Response to interferon-beta (IFN-beta) treatment is heterogeneous in multiple sclerosis (MS). We aimed to search for biomarkers predicting no evidence of disease activity (NEDA) status upon IFN-beta treatment in MS. 119 patients with relapsing–remitting MS (RRMS) initiating IFN-beta treatment were included in the study, and followed prospectively for 2 years. Neutralizing antibodies (NAb) were explored in serum samples obtained after 6 and 12 months of IFN-beta treatment. Soluble cytokines and blood lymphocytes were studied in basal samples by ELISA and flow cytometry, respectively. 9% of patients developed NAb. These antibodies were more frequent in patients receiving IFN-beta 1b than in those treated subcutaneous (p = 0.008) or intramuscular (p < 0.0001) IFN-beta 1a. No patient showing NAb remained NEDA during follow-up. Basal immunological variables are also associated with patient response. Percentages below 3% of CD19 + CD5 + cells (AUC 0.74, CI 0.63–0.84; OR 10.68, CI 3.55–32.15, p < 0.0001; Likelihood ratio 4.28) or above 2.6% of CD8 + perforin + T cells (AUC 0.79, CI 0.63–0.96; OR 6.11, CI 2.0–18.6, p = 0.0009; Likelihood ratio 5.47) increased the probability of achieving NEDA status during treatment. Basal blood immune cell subsets contribute to identify MS patients with a high probability of showing an optimal response to IFN-beta.
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24 November 2017
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Acknowledgements
This work was supported by Grants PI15/00513, RD16/0015/0001, RD16/0015/0004 and RD16/0015/0013 from the Fondo para la Investigación Sanitaria, Instituto de Salud Carlos III, Ministerio de Economía y Competitividad, Spain and FEDER.
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The study protocol was approved by the Ethics Committee of Hospital Universitario Ramón y Cajal (Madrid, Spain) and of Hospital Universitari Vall d’Hebron (Barcelona, Spain). The study was carried out according to the International Conference on Harmonization Guidelines for Good Clinical Practice and the Declaration of Helsinki.
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Every patient provided written informed consent before entering the study.
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LMV, LCF, SSM, JCA-C, JR and XM received payment for lecturing or travel expenses or research Grants or consultancy from Merck-Serono, Biogen, Sanofi-Genzyme, Roche, Bayer and Novartis. The remaining authors declare no conflicts of interest.
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José C. Álvarez-Cermeño and Luisa M. Villar were principal co-investigators.
A correction to this article is available online at https://doi.org/10.1007/s00415-017-8679-5.
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Alenda, R., Costa-Frossard, L., Alvarez-Lafuente, R. et al. Blood lymphocyte subsets identify optimal responders to IFN-beta in MS. J Neurol 265, 24–31 (2018). https://doi.org/10.1007/s00415-017-8625-6
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DOI: https://doi.org/10.1007/s00415-017-8625-6