Decreased soluble IFN-β receptor (sIFNAR2) in multiple sclerosis patients: A potential serum diagnostic biomarker

Teresa Órpez-Zafra, Jose Pavía, Isaac Hurtado-Guerrero, Maria J. Pinto-Medel, Jose Luis Rodriguez Bada, Patricia Urbaneja, Margarita Suardíaz, Luisa M. Villar, Manuel Comabella, Xavier Montalban, Jose C. Alvarez-Cermeño, Laura Leyva, Óscar Fernández, Begoña Oliver-Martos

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6 Citations (Scopus)


© SAGE Publications. Background: The soluble isoform of the interferon-β (IFN-β) receptor (sIFNAR2) could modulate the activity of both endogenous and systemically administered IFN-β. Previously, we described lower serum sIFNAR2 levels in untreated multiple sclerosis (MS) than in healthy controls (HCs). Objective: To assess sIFNAR2 levels in a new cohort of MS patients and HCs, as well as in patients with clinically isolated syndrome (CIS) and with other inflammatory neurological disorders (OIND) and to assess its ability as a diagnostic biomarker. Methods: The cross-sectional study included 148 MS (84 treatment naive and 64 treated), 87 CIS, 42 OIND, and 96 HCs. Longitudinal study included 94 MS pretreatment and after 1 year of therapy with IFN-β, glatiramer acetate (GA), or natalizumab. sIFNAR2 serum levels were measured by a quantitative ELISA developed and validated in our laboratory. Results: Naive MS and CIS patients showed significantly lower sIFNAR2 levels than HCs and OIND patients. The sensitivity and specificity to discriminate between MS and OIND, for a sIFNAR2 cutoff value of 122.02 ng/mL, were 70.1%, and 79.4%, respectively. sIFNAR2 increased significantly in IFN-β-treated patients during the first year of therapy in contrast to GA- and natalizumab-treated patients who showed non-significant changes. Conclusion: The results suggest that sIFNAR2 could be a potential diagnostic biomarker for MS.
Original languageEnglish
Pages (from-to)937-945
JournalMultiple Sclerosis
Issue number7
Publication statusPublished - 1 Jun 2017


  • biomarker
  • diagnosis
  • Multiple sclerosis
  • soluble interferon beta receptor


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