Galcanezumab

MHD is a calendar day on which a migraine or probable migraine (a headache missing 1 of the migraine features) occurred. Per International Headache Society \[IHS\] International Classification of Headache Disorders 3rd edition \[ICHD-3\], migraine is defined as a headache, with or without aura, of ≥30 minutes duration with the following required features (A) At least 2 of the following headache characteristics: Unilateral location; Pulsatile quality; Moderate or severe pain intensity; Aggravation by or causing avoidance of routine physical activity (B) During headache at least 1 of the following: Nausea and/or vomiting; Photophobia and phonophobia. Overall mean is derived from the average of months 1 to 3 with Least square (LS) mean change calculated using mixed model repeat measures (MMRM) model with fixed categorical effects of treatment, country, month, and treatment-by-month interaction, and the continuous fixed covariates of baseline value and baseline value-by-visit interaction.

Migraine Headache Day (MHD): A calendar day on which a migraine headache or probable migraine headache occurred. Overall mean is derived from the average of months 1 to 3 from mixed model repeated measures (MMRM) model. Least square (LS) Mean was calculated using MMRM model with treatment, pooled country, month, treatment by month, baseline, and baseline by month as fixed effects.

A TEAE started on or after the date and time of the first dose of study drug administered in this study, or started prior to the study drug administration but worsened after the study drug started. Clinically significant events were defined as SAEs and other non-serious adverse events (AEs). A summary of SAEs and other non-serious AEs is located in the Reported Adverse Events module.

A TEAE is defined as the reported AEs that first occurred or worsened during the post-baseline phase compared with the baseline phase. An SAE is any adverse event from this study that results in 1 of the following: Death, initial or prolonged inpatient hospitalization, a life-threatening experience (that is, immediate risk of dying), persistent or significant disability/incapacity, congenital anomaly/birth defect, Important medical events that may not be immediately life-threatening or result in death or hospitalization but may jeopardize the subject or may require intervention to prevent 1 of the other outcomes listed in the definition above. A summary of serious and other non-serious adverse events regardless of causality is located in the reported adverse events module.

C-SSRS is a scale capturing occurrence, severity, and frequency of suicide-related thoughts and behaviours, and has a binary response (yes/no). * Suicidal Ideation: a "yes" answer to any one of 5 suicidal ideation questions: Wish to be Dead, Non-specific Active Suicidal Thoughts, Active Suicidal Ideation with Any Methods (Not Plan) without Intent to Act, Active Suicidal Ideation with Some Intent to Act, without Specific Plan, Active Suicidal Ideation with Specific Plan and Intent. * Suicidal Behaviour: a "yes" answer to any of 5 suicidal behaviour questions: Preparatory Acts or Behaviour, Aborted Attempt, Interrupted Attempt, Actual Attempt (non-fatal), Completed Suicide.

Adverse Event: Any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product that does not necessarily have a causal relationship with this treatment. An adverse event can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. A summary of other non-serious AEs, and all SAE's, regardless of causality, is reported in the Adverse Events section.

MHD: A calendar day on which a migraine headache or probable migraine headache occurred. Overall mean is derived from the average of months 1 to 3 from mixed model repeated measures (MMRM) model. Least square(LS) Mean was calculated using MMRM model with treatment, pooled country, baseline medication overuse, concurrent prophylaxis use, month, treatment by month, baseline, and baseline by month as fixed effects.

Number of cluster headache attacks was recorded daily by study participants in their ePRO Diary, Baseline and 12 weeks of daily data during double-blind treatment phase will be converted into 14-calendar day intervals: the baseline 14-day interval, Weeks 1/2, 3/4, 5/6, 7/8, 9/10, and 11/12. Next, the biweekly interval results were adjusted to 7-day (weekly) interval in order to report the outcome as weekly frequency. Overall mean change from baseline is derived from mixed model repeated measures (MMRM) analysis. Least Square (LS) means were calculated using MMRM model with treatment, sex, verapamil use, pooled investigative site, week, baseline, and treatment by week as fixed effects.

Number of cluster headache attacks was recorded daily by study participants in their ePRO Diary. Overall mean change from baseline is derived from the average of weeks 1 to 3 from mixed model repeated measures (MMRM) analysis. Least Square (LS) means were calculated using MMRM model with treatment, sex, pooled investigative site, week, baseline, and treatment by week as fixed effects.

The criteria for a migraine headache was adapted from the standard International Headache Society (IHS) International Classification of Headache Disorders (ICHD)-3 beta. The definition of a migraine headache was a headache with or without aura, of ≥30 minutes (min) duration, and with both ("A" and "B") required features from the IHS ICHD-3 beta definition. Required feature "A" includes at least 2 of the following headache characteristics: unilateral location, pulsatile quality, moderate or severe pain intensity, or aggravation by or causing avoidance of routine physical activity. Required feature "B" includes at least 1 of the following during the headache: nausea and/or vomiting, or photophobia and phonophobia.

Pharmacokinetics: Maximum Concentration (Cmax) of Galcanezumab.

Pharmacokinetics: Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC\[0-∞\]) of Galcanezumab.

Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve from Time Zero to Infinity (AUC\[0-inf\] of Galcanezumab

If an injection site reaction is present, it will be fully characterized (including erythema, induration, pain, itching). A summary of other nonserious adverse event (AE), and all serious adverse events (SAE), regardless of causality, is located in the reported adverse events section.

Part B: Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve (AUC) from Time Zero to Infinity of Galcanezumab.

Part B: Pharmacokinetics: Maximum Concentration (Cmax) of Galcanezumab.