An interim analysis covered 19,740 migraine patients including 91 erenumab patients with an overall mean disease duration of 18 years. 40% have already tried, 32% are currently on prophylactic drug therapy, while 37% are using non-pharmaceutical treatments, with most patients (46%) applying relaxation training. Erenumab patients have tried 6.1 different pharmacologic prophylactic therapies on average. 85% of erenumab-patients stated that they can cope better with daily activities and 83% have fewer days lost to migraine since therapy initiation. 67% reported less intense and shorter attacks, a mean reduction of 7 migraine days and 47% could already feel an improvement of their migraine symptoms after the first injection. For AAN congress the full data set of >20,000 migraine patients, ~140 treated with erenumab will be presented.