Routine interferon-neutralising antibody testing in patients with relapsing-remitting multiple sclerosis

Multiple sclerosis is a leading cause of disability in young adults, with the Scottish population suffering the highest prevalence in Europe. Disease-modifying therapies, including beta-interferon (IFN-b), are increasingly used to minimise relapse frequency in the majority of patients who present with a relapsing-remitting disease pattern. Unfortunately, neutralising antibodies (NABs) may develop against IFN-b and are associated with reduced efficacy. These antibodies may be detected using a serum sample.