Cardiac arrhythmia with premature ventricular contractures induced by interferon beta in a patient with multiple sclerosis

Multiple sclerosis(MS)is an immune‑mediated inflammatory and neurodegenerative disease of the central nervous system.Interferon(IFN)beta is an active ingredient of five out of twelve disease modifying treatments approved for MS.We report a case of IFN‑beta‑induced cardiac arrhythmia with premature ventricular contractures in a patient recently diagnosed with MS.