Natalizumab treatment for multiple sclerosis: Middle East and North Africa regional recommendations for patient selection and monitoring.

Background: Natalizumab, a highly specific α4-integrin antagonist, , has recently been registered across the Middle East and North Africa region. It improves clinical and magnetic resonance imaging (MRI) outcomes and reduces the rate of relapse and disability progression in relapsing-remitting multiple sclerosis (MS). Natalizumab is recommended for patients who fail first-line disease-modifying therapy or who have very active disease.