A Trial of Eptinezumab in Participants With Migraine and Insufficient Response to Anti-CGRP Medications

Key Inclusion Criteria: * The participant has a diagnosis of migraine as defined by International Headache Society (IHS) International Classification of Headache Disorders 3rd Edition (ICHD-3) guidelines with a history of migraine of at least 12 months prior to the Screening Visit. * The participant has ≥8 migraine days per month for each month within the past 3 months prior to the Screening Visit. * The participant has documented evidence of recent inadequate response to either one anti-CGRP monoclonal antibody (mAb) (other than eptinezumab) or one gepant, indicated and used for migraine prevention. Key Exclusion Criteria: * The participant has taken more than 10 tablets of ubrogepant or more than 8 tablets of rimegepant per month as an acute migraine medication in the 1 month prior to the screening visit and during the 4-week baseline period. * The participant has previously had an inadequate response to more than one CGRP-targeting therapy (anti-CGRP mAb or gepants), indicated for migraine prevention. * The participant has a history of cancer, other than basal cell or stage 1 squamous cell carcinoma of the skin or adequately treated cervical intraepithelial neoplasia, that has not been in remission for \>5 years prior to the first dose of eptinezumab. Male participants with abnormal prostate-specific antigen levels according to national/local guideline may be enrolled in the trial provided they have been followed up, have been asymptomatic, and have had no treatment for prostate cancer. Participants under surveillance for a low and stable level of M-component are allowed. * The participant has previously been treated with eptinezumab. Other protocol-defined inclusion and exclusion criteria apply.