A pharmacogenetic study implicates NINJ2 in the response to Interferon-ß in multiple sclerosis

Silvia Peroni, Melissa Sorosina, Sunny Malhotra, Ferdinando Clarelli, Ana Maria Osiceanu, Laura Ferrè, Tina Roostaei, Jordi Rio, Luciana Midaglia, Luisa María Villar, José Carlos Álvarez-Cermeño, Clara Guaschino, Marta Radaelli, Lorena Citterio, Jeannette Lechner-Scott, Nino Spataro, Arcadi Navarro, Vittorio Martinelli, Xavier Montalban, Howard L. WeinerPhilip de Jager, Giancarlo Comi, Federica Esposito, Manuel Comabella, Filippo Martinelli-Boneschi

Research output: Contribution to journalArticleResearch

Abstract

© The Author(s), 2019. Background: Multiple sclerosis (MS) is a disease in which biomarker identification is fundamental to predict response to treatments and to deliver the optimal drug to patients. We previously found an association between rs7298096, a polymorphism upstream to the NINJ2 gene, and the 4-year response to interferon-ß (IFNß) treatment in MS patients. Objectives: To analyse the association between rs7298096 and time to first relapse (TTFR) during IFNß therapy in MS patients and to better investigate its functional role. Methods: Survival analysis was applied in three MS cohorts from different countries (n = 1004). We also studied the role of the polymorphism on gene expression using GTEx portal and a luciferase assay. We interrogated GEO datasets to explore the relationship between NINJ2 expression, IFNß and TTFR. Results: Rs7298096AA patients show a shorter TTFR than rs7298096G-carriers (Pmeta-analysis = 3 × 10-4, hazard ratio = 1.41). Moreover, rs7298096AA is associated with a higher NINJ2 expression in blood (p = 7.0 × 10-6), which was confirmed in vitro (p = 0.009). Finally, NINJ2 expression is downregulated by IFNß treatment and related to TTFR. Conclusions: Rs7298096 could influence MS disease activity during IFNß treatment by modulating NINJ2 expression in blood. The gene encodes for an adhesion molecule involved in inflammation and endothelial cells activation, supporting its role in MS.
Original languageEnglish
JournalMultiple Sclerosis Journal
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • eQTL
  • interferon-beta
  • Pharmacogenetic
  • precision medicine

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