The Importance of CGRP Treatments in Migraine

Recent FDA approval of Zavega Pant, the first inhibitor of Calcitonin gene related peptide or CGRP to be formulated as a nasal spray. Can you please discuss this study and its significance for migraine management? Over the past several years there's been a revolution in treatment of migraines. What is more fascinating to me is that we thought we knew everything about migraine about two decades ago.