['migraine']
['galcanezumab', 'placebo']

        Inclusion Criteria:

          -  Have a diagnosis of migraine or chronic migraine.

          -  History of migraine headaches at least 1 year prior to screening, with onset prior to
             age 50.

          -  History of at least 4 migraine headache days and at, with at least 1 headache-free day
             per month on average within the past 3 months.

          -  Have documentation of 2 to 4 migraine preventive medication category failures due to
             inadequate efficacy or tolerability, in the past 10 years.

        Exclusion Criteria:

          -  Are currently enrolled in or have participated within the last 30 days or within 5
             half-lives (whichever is longer) in a clinical trial involving an investigational
             product.

          -  Current use or prior exposure to galcanezumab or another calcitonin gene-related
             peptide (CGRP) antibody.

          -  History of persistent daily headache, cluster headache or migraine subtypes including
             hemiplegic (sporadic or familial) migraine, ophthalmoplegic migraine, and migraine
             with brainstem aura (basilar-type migraine).

          -  Pregnant or nursing.
      