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Evaluation of Galcanezumab in the Prevention of Chronic Migraine

A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study of LY2951742 in Patients With Chronic Migraine - the REGAIN Study

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02614261
Acronym
REGAIN
Enrollment
1117
Registered
2015-11-25
Start date
2015-11-30
Completion date
2021-07-14
Last updated
2022-05-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Migraine

Keywords

prevention, prophylaxis, headache

Brief summary

The main purpose of this study is to evaluate the efficacy of the study drug known as galcanezumab in participants with chronic migraine.

Interventions

DRUGGalcanezumab

Administered SC

DRUGPlacebo

Administered SC

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

Main Study: * Have a diagnosis of chronic migraine as defined by International Headache Society (IHS) International Classification of Headache Disorders (ICHD)-3 beta guidelines (1.3) (ICHD-3 2013), with a history of migraine headaches of at least 1 year prior to screening, and migraine onset prior to age 50. Israel addendum: * Participants must have completed all phases of main study, including the 4-month post-treatment follow-up phase, during which no investigational product was administered. * Participants also must be considered by the investigator to have benefited from galcanezumab treatment and must have exhausted alternative therapies for the prevention of migraine.

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. * Known hypersensitivity to multiple drugs, monoclonal antibodies or other therapeutic proteins, or to galcanezumab. * 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) defined by IHS ICHD-3 beta.

Design outcomes

Primary

MeasureTime frameDescription
Overall Mean Change From Baseline in the Number of Monthly Migraine Headache Days (MHD)Baseline, Month 1 through Month 3MHD: 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.

Secondary

MeasureTime frameDescription
Mean Change From Baseline in the Migraine-Specific Quality of Life Questionnaire (MSQ) Role-function Restrictive DomainBaseline, Month 3MSQ v2.1 is a health status instrument, with a 4-week recall period, developed to address physical and emotional limitations of specific concern to individuals with migraine. Addressing the impact of migraine on work or daily activities, relationships with family & friends, leisure time, productivity, concentration, energy, tiredness & feelings. It consists of 14 items that address 3 domains:(1) Role Function-Restrictive (items 1-7);(2) Role Function- Preventive (items 8-11);&(3) Emotional Function (items 12-14).Response options range from none of the time (value 1) to all of the time (value 6),& are reverse-recoded (value 6 to 1) before the domain scores are calculated. Total raw scores for each domain is the sum of the final item value for all of the items in that domain. After the total raw score is computed for each domain, they are transformed to a 0-100 scale with higher scores indicating a better health status & a positive change in scores reflecting functional improvement.
Overall Mean Change From Baseline in the Number of Monthly Migraine Headache Days Requiring Medication for the Acute Treatment of Migraine or HeadacheBaseline, Month 1 through Month 3Migraine 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 MMRM model. LSMean 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.
Mean Change From Baseline in the Patient Global Impression of Severity (PGI-S) ScoreBaseline, Month 3PGI-S scale is a participant-rated instrument that measures participants own global impression of their illness severity. The participant was instructed as follows: Considering migraine as a chronic condition, how would you rate your level of illness? Response options were from 1 (normal, not at all ill) to 7 (extremely ill). LSMean 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.
Overall Mean Change From Baseline in Headache HoursBaseline, Month 1 through Month 3Overall mean is derived from the average of months 1 to 3 from MMRM model. LSMean 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 Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache DaysBaseline, Month 1 through Month 3MHD: A calendar day on which a migraine headache or probable migraine headache occurred.
Percentage of Participants Developing Treatment Emergent Anti-drug Antibodies (ADA) to GalcanezumabMonth 1 through Month 3A Treatment Emergent Anti-Drug Antibodies (TE ADA) evaluable participant is considered to be TE ADA+ if the participant has at least one post baseline titer that is a 4-fold or greater increase in titer from baseline measurement. If baseline result is ADA Not Present, then the participant is TE ADA+ if there is at least one post baseline result of ADA Present with titer \>= 20.
Pharmacokinetics (PK): Area Under the Concentration Time Curve (AUC) of GalcanezumabBaseline through Month 3Pharmacokinetics (PK): Area Under the Concentration Time Curve (AUC) of Galcanezumab.
Plasma Concentration of Calcitonin Gene-Related Peptide (CGRP)Month 3Plasma Concentration of Calcitonin Gene-Related Peptide (CGRP).
Serum Concentrations of GalcanezumabMonth 3Serum concentrations of Galcanezumab
Mean Change From Baseline on the Migraine Disability Assessment Test (MIDAS) Total ScoreBaseline, Month 3The MIDAS is a participant-rated scale which was designed to quantify headache-related disability over a 3-month period. This instrument consists of five items that reflect the number of days reported as missing or with reduced productivity at work or home, and the number of days of missed social events. Each item has a numeric response range from 0 to 90 days, if days are missed from work or home they are not counted as days with reduced productivity at work or home. The numeric responses are summed to produce a total score ranging from 0 to 270, in which a higher value is indicative of more disability. LSMean was calculated using Analysis of covariance (ANCOVA) model with last observation carried forward (LOCF) with treatment, pooled country, baseline medication overuse, concurrent prophylaxis use, and baseline value as fixed effects.

Countries

Argentina, Canada, Czechia, Germany, Israel, Italy, Mexico, Netherlands, Puerto Rico, Spain, Taiwan, United Kingdom, United States

Participant flow

Pre-assignment details

1. Main study: This randomised part of study was conducted in 3 phases * a 3-month double-blind treatment phase * an optional 9-month open-label extension phase * a 4-month follow-up phase 2. Israel addendum: Participants in Israel who completed all phases in main study, benefited from galcanezumab and had no other suitable alternative treatment options available were provided continued-access to galcanezumab where safety was monitored.

Participants by arm

ArmCount
Placebo
* Double-blind treatment phase: Participants received placebo once a month by subcutaneous injection for 3 months. * Open-label extension phase: After completion of double-blind phase, participants had an option to enter open-label extension phase where they receive 240 mg galcanezumab SC at first month, 120mg at second month followed by 120mg or 240mg once a month (at the discretion of the investigator) for the remaining 7 months. * Follow-up phase: After completion or discontinuation from double-blind or open-label extension phases, participants entered follow-up phase where they were observed for 4 months. No treatments administered.
559
Galcanezumab 120mg
* Double-blind treatment phase: Participants received loading dose of 240 mg of galcanezumab at first dosing visit followed 120 mg galcanezumab once a month by subcutaneous injection for 2 months. * Open-label extension phase: After completion of double-blind phase, participants had an option to enter open-label extension phase where they received 240mg galcanezumab SC at first month, 120mg at second month followed by 120mg or 240mg once a month (at the discretion of the investigator) for the remaining 7 months. * Follow-up phase: After completion or discontinuation from double-blind or open-label extension phases, participants entered follow-up phase where they were observed for 4 months. No treatments administered.
279
Galcanezumab 240mg
* Double-blind treatment phase: Participants received 240 mg of galcanezumab once a month by subcutaneous injection for 3 months. * Open-label extension phase: After completion of double-blind phase, participants had an option to enter open-label extension phase where they received 240mg galcanezumab SC at first month, 120mg at second month followed by 120mg or 240mg once a month (at the discretion of the investigator) for the remaining 7 months. * Follow-up phase: After completion or discontinuation from double-blind or open-label extension phases, participants entered follow-up phase where they were observed for 4 months. No treatments administered.
279
Total1,117

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Double-Blind Treatment PhaseAdverse Event7320
Double-Blind Treatment PhaseLack of Efficacy4000
Double-Blind Treatment PhaseLost to Follow-up9410
Double-Blind Treatment PhasePhysician Decision2110
Double-Blind Treatment PhasePregnancy2200
Double-Blind Treatment PhaseProtocol Violation6100
Double-Blind Treatment PhaseScreen failure0120
Double-Blind Treatment PhaseWithdrawal by Subject20570
Follow-up PhaseAdverse Event2010
Follow-up PhaseLost to Follow-up12520
Follow-up PhasePhysician Decision5100
Follow-up PhasePregnancy0100
Follow-up PhaseProtocol Violation1000
Follow-up PhaseWithdrawal by Subject124110
Israel AddendumWithdrawal by Subject0004
Open-Label Extension PhaseAdverse Event2312110
Open-Label Extension PhaseLack of Efficacy1412140
Open-Label Extension PhaseLost to Follow-up15790
Open-Label Extension PhasePhysician Decision2000
Open-Label Extension PhasePregnancy1210
Open-Label Extension PhaseProtocol Violation3410
Open-Label Extension PhaseWithdrawal by Subject3018180

Baseline characteristics

CharacteristicTotalGalcanezumab 240mgGalcanezumab 120mgPlacebo
Age, Continuous40.98 years
STANDARD_DEVIATION 12.11
41.06 years
STANDARD_DEVIATION 12.36
39.66 years
STANDARD_DEVIATION 11.86
41.61 years
STANDARD_DEVIATION 12.07
Ethnicity (NIH/OMB)
Hispanic or Latino
256 Participants69 Participants65 Participants122 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
792 Participants194 Participants196 Participants402 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
69 Participants16 Participants18 Participants35 Participants
Migraine Headache Days (MHD)19.41 Days per Month
STANDARD_DEVIATION 4.52
19.17 Days per Month
STANDARD_DEVIATION 4.6
19.36 Days per Month
STANDARD_DEVIATION 4.27
19.55 Days per Month
STANDARD_DEVIATION 4.59
Race (NIH/OMB)
American Indian or Alaska Native
6 Participants0 Participants2 Participants4 Participants
Race (NIH/OMB)
Asian
54 Participants15 Participants13 Participants26 Participants
Race (NIH/OMB)
Black or African American
72 Participants17 Participants16 Participants39 Participants
Race (NIH/OMB)
More than one race
101 Participants21 Participants24 Participants56 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants1 Participants0 Participants0 Participants
Race (NIH/OMB)
White
882 Participants225 Participants224 Participants433 Participants
Region of Enrollment
Argentina
82 Participants21 Participants20 Participants41 Participants
Region of Enrollment
Canada
15 Participants3 Participants4 Participants8 Participants
Region of Enrollment
Czechia
45 Participants10 Participants10 Participants25 Participants
Region of Enrollment
Germany
54 Participants13 Participants13 Participants28 Participants
Region of Enrollment
Israel
40 Participants10 Participants10 Participants20 Participants
Region of Enrollment
Italy
56 Participants15 Participants14 Participants27 Participants
Region of Enrollment
Mexico
24 Participants5 Participants7 Participants12 Participants
Region of Enrollment
Netherlands
43 Participants11 Participants11 Participants21 Participants
Region of Enrollment
Spain
50 Participants12 Participants14 Participants24 Participants
Region of Enrollment
Taiwan
48 Participants12 Participants12 Participants24 Participants
Region of Enrollment
United Kingdom
31 Participants9 Participants7 Participants15 Participants
Region of Enrollment
United States
629 Participants158 Participants157 Participants314 Participants
Sex: Female, Male
Female
950 Participants228 Participants238 Participants484 Participants
Sex: Female, Male
Male
167 Participants51 Participants41 Participants75 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
EG010
affected / at risk
EG011
affected / at risk
EG012
affected / at risk
deaths
Total, all-cause mortality
0 / 5580 / 2730 / 2820 / 5010 / 2590 / 2620 / 150 / 40 / 40 / 4380 / 2230 / 2280 / 29
other
Total, other adverse events
170 / 55898 / 273105 / 282223 / 501117 / 259120 / 2620 / 150 / 42 / 457 / 43819 / 22327 / 22826 / 29
serious
Total, serious adverse events
5 / 5582 / 2734 / 28216 / 5016 / 2599 / 2620 / 150 / 40 / 45 / 4383 / 2231 / 2286 / 29

Outcome results

Primary

Overall Mean Change From Baseline in the Number of Monthly Migraine Headache Days (MHD)

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.

Time frame: Baseline, Month 1 through Month 3

Population: All randomized participants who received at least one dose of study drug and had baseline and at least one post baseline value.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboOverall Mean Change From Baseline in the Number of Monthly Migraine Headache Days (MHD)-2.74 Migraine Headache Days per MonthStandard Error 0.36
Galcanezumab 120mgOverall Mean Change From Baseline in the Number of Monthly Migraine Headache Days (MHD)-4.83 Migraine Headache Days per MonthStandard Error 0.44
Galcanezumab 240mgOverall Mean Change From Baseline in the Number of Monthly Migraine Headache Days (MHD)-4.62 Migraine Headache Days per MonthStandard Error 0.43
p-value: <0.00195% CI: [-2.92, -1.26]Mixed Models Analysis
p-value: <0.00195% CI: [-2.71, -1.05]Mixed Models Analysis
Secondary

Mean Change From Baseline in the Migraine-Specific Quality of Life Questionnaire (MSQ) Role-function Restrictive Domain

MSQ v2.1 is a health status instrument, with a 4-week recall period, developed to address physical and emotional limitations of specific concern to individuals with migraine. Addressing the impact of migraine on work or daily activities, relationships with family & friends, leisure time, productivity, concentration, energy, tiredness & feelings. It consists of 14 items that address 3 domains:(1) Role Function-Restrictive (items 1-7);(2) Role Function- Preventive (items 8-11);&(3) Emotional Function (items 12-14).Response options range from none of the time (value 1) to all of the time (value 6),& are reverse-recoded (value 6 to 1) before the domain scores are calculated. Total raw scores for each domain is the sum of the final item value for all of the items in that domain. After the total raw score is computed for each domain, they are transformed to a 0-100 scale with higher scores indicating a better health status & a positive change in scores reflecting functional improvement.

Time frame: Baseline, Month 3

Population: All randomized participants who received at least one dose of study drug and had baseline and month 3 measurement.~LSMean 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.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboMean Change From Baseline in the Migraine-Specific Quality of Life Questionnaire (MSQ) Role-function Restrictive Domain16.76 units on a scaleStandard Error 1.18
Galcanezumab 120mgMean Change From Baseline in the Migraine-Specific Quality of Life Questionnaire (MSQ) Role-function Restrictive Domain21.81 units on a scaleStandard Error 1.41
Galcanezumab 240mgMean Change From Baseline in the Migraine-Specific Quality of Life Questionnaire (MSQ) Role-function Restrictive Domain23.05 units on a scaleStandard Error 1.63
p-value: <0.00195% CI: [2.12, 7.99]Mixed Models Analysis
p-value: <0.00195% CI: [3.03, 9.55]Mixed Models Analysis
Secondary

Mean Change From Baseline in the Patient Global Impression of Severity (PGI-S) Score

PGI-S scale is a participant-rated instrument that measures participants own global impression of their illness severity. The participant was instructed as follows: Considering migraine as a chronic condition, how would you rate your level of illness? Response options were from 1 (normal, not at all ill) to 7 (extremely ill). LSMean 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.

Time frame: Baseline, Month 3

Population: All randomized participants who received at least one dose of study drug and had baseline and month 3 measurement.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboMean Change From Baseline in the Patient Global Impression of Severity (PGI-S) Score-0.62 units on a scaleStandard Error 0.08
Galcanezumab 120mgMean Change From Baseline in the Patient Global Impression of Severity (PGI-S) Score-0.76 units on a scaleStandard Error 0.1
Galcanezumab 240mgMean Change From Baseline in the Patient Global Impression of Severity (PGI-S) Score-0.91 units on a scaleStandard Error 0.1
p-value: 0.18195% CI: [-0.34, 0.06]Mixed Models Analysis
p-value: 0.00695% CI: [-0.48, -0.08]Mixed Models Analysis
Secondary

Mean Change From Baseline on the Migraine Disability Assessment Test (MIDAS) Total Score

The MIDAS is a participant-rated scale which was designed to quantify headache-related disability over a 3-month period. This instrument consists of five items that reflect the number of days reported as missing or with reduced productivity at work or home, and the number of days of missed social events. Each item has a numeric response range from 0 to 90 days, if days are missed from work or home they are not counted as days with reduced productivity at work or home. The numeric responses are summed to produce a total score ranging from 0 to 270, in which a higher value is indicative of more disability. LSMean was calculated using Analysis of covariance (ANCOVA) model with last observation carried forward (LOCF) with treatment, pooled country, baseline medication overuse, concurrent prophylaxis use, and baseline value as fixed effects.

Time frame: Baseline, Month 3

Population: All randomized participants who received at least one dose of study drug and had baseline and at least one post baseline measurement.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboMean Change From Baseline on the Migraine Disability Assessment Test (MIDAS) Total Score-11.53 units on a scaleStandard Error 3.38
Galcanezumab 120mgMean Change From Baseline on the Migraine Disability Assessment Test (MIDAS) Total Score-20.27 units on a scaleStandard Error 4.07
Galcanezumab 240mgMean Change From Baseline on the Migraine Disability Assessment Test (MIDAS) Total Score-17.02 units on a scaleStandard Error 4.05
p-value: 0.02595% CI: [-16.39, -1.08]ANCOVA
p-value: 0.15795% CI: [-13.1, 2.12]ANCOVA
Secondary

Number of Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache Days

MHD: A calendar day on which a migraine headache or probable migraine headache occurred.

Time frame: Baseline, Month 1 through Month 3

Population: All randomized participants who received at least one dose of study drug and had baseline and month 3 measurement.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache Days≥75%44 Participants
PlaceboNumber of Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache Days≥50%123 Participants
PlaceboNumber of Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache Days≥100%8 Participants
Galcanezumab 120mgNumber of Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache Days≥75%34 Participants
Galcanezumab 120mgNumber of Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache Days≥50%90 Participants
Galcanezumab 120mgNumber of Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache Days≥100%4 Participants
Galcanezumab 240mgNumber of Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache Days≥50%97 Participants
Galcanezumab 240mgNumber of Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache Days≥100%8 Participants
Galcanezumab 240mgNumber of Participants With Reduction From Baseline ≥50%, ≥75% and 100% in Monthly Migraine Headache Days≥75%40 Participants
Comparison: Reduction from Baseline ≥50%,p-value: 0.00495% CI: [1.167, 2.256]CPRMM
Comparison: Reduction from Baseline ≥50%p-value: <0.00195% CI: [1.291, 2.474]CPRMM
Comparison: Reduction from Baseline ≥75%p-value: 0.10295% CI: [0.923, 2.43]CPRMM
Comparison: Reduction from Baseline ≥75%p-value: 0.01195% CI: [1.146, 2.888]CPRMM
Comparison: Reduction from Baseline ≥100%p-value: 0.72995% CI: [0.163, 3.563]CPRMM
Comparison: Reduction from Baseline ≥100%p-value: 0.27695% CI: [0.6, 5.998]CPRMM
Secondary

Overall Mean Change From Baseline in Headache Hours

Overall mean is derived from the average of months 1 to 3 from MMRM model. LSMean 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.

Time frame: Baseline, Month 1 through Month 3

Population: All randomized participants who received at least one dose of study drug and had baseline \& at least one post baseline measurement.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboOverall Mean Change From Baseline in Headache Hours-13.44 Headache Hours per MonthStandard Error 3.91
Galcanezumab 120mgOverall Mean Change From Baseline in Headache Hours-36.15 Headache Hours per MonthStandard Error 4.74
Galcanezumab 240mgOverall Mean Change From Baseline in Headache Hours-31.53 Headache Hours per MonthStandard Error 4.7
p-value: <0.00195% CI: [-31.74, -13.69]Mixed Models Analysis
p-value: <0.00195% CI: [-27.09, -9.09]Mixed Models Analysis
Secondary

Overall Mean Change From Baseline in the Number of Monthly Migraine Headache Days Requiring Medication for the Acute Treatment of Migraine or Headache

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 MMRM model. LSMean 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.

Time frame: Baseline, Month 1 through Month 3

Population: All randomized participants who received at least one dose of study drug and had baseline and at least one post baseline measurement.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboOverall Mean Change From Baseline in the Number of Monthly Migraine Headache Days Requiring Medication for the Acute Treatment of Migraine or Headache-2.23 Days Per MonthStandard Error 0.33
Galcanezumab 120mgOverall Mean Change From Baseline in the Number of Monthly Migraine Headache Days Requiring Medication for the Acute Treatment of Migraine or Headache-4.74 Days Per MonthStandard Error 0.4
Galcanezumab 240mgOverall Mean Change From Baseline in the Number of Monthly Migraine Headache Days Requiring Medication for the Acute Treatment of Migraine or Headache-4.25 Days Per MonthStandard Error 0.4
p-value: <0.00195% CI: [-3.27, -1.76]Mixed Models Analysis
p-value: <0.00195% CI: [-2.77, -1.26]Mixed Models Analysis
Secondary

Percentage of Participants Developing Treatment Emergent Anti-drug Antibodies (ADA) to Galcanezumab

A Treatment Emergent Anti-Drug Antibodies (TE ADA) evaluable participant is considered to be TE ADA+ if the participant has at least one post baseline titer that is a 4-fold or greater increase in titer from baseline measurement. If baseline result is ADA Not Present, then the participant is TE ADA+ if there is at least one post baseline result of ADA Present with titer \>= 20.

Time frame: Month 1 through Month 3

Population: All randomized participants who received at least one dose of study drug and had at least one non-missing test result for ADA for each of the baseline period and the post baseline period.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboPercentage of Participants Developing Treatment Emergent Anti-drug Antibodies (ADA) to Galcanezumab8 Participants
Galcanezumab 120mgPercentage of Participants Developing Treatment Emergent Anti-drug Antibodies (ADA) to Galcanezumab7 Participants
Galcanezumab 240mgPercentage of Participants Developing Treatment Emergent Anti-drug Antibodies (ADA) to Galcanezumab7 Participants
p-value: 0.263Cochran-Mantel-Haenszel
p-value: 0.29Cochran-Mantel-Haenszel
Secondary

Pharmacokinetics (PK): Area Under the Concentration Time Curve (AUC) of Galcanezumab

Pharmacokinetics (PK): Area Under the Concentration Time Curve (AUC) of Galcanezumab.

Time frame: Baseline through Month 3

Population: Zero participants analyzed. AUC data was not collected as AUC was not pre-specified in protocol.

Secondary

Plasma Concentration of Calcitonin Gene-Related Peptide (CGRP)

Plasma Concentration of Calcitonin Gene-Related Peptide (CGRP).

Time frame: Month 3

Population: All randomized participants who received at least one dose of study drug and had measurable plasma concentrations.

ArmMeasureValue (MEAN)Dispersion
PlaceboPlasma Concentration of Calcitonin Gene-Related Peptide (CGRP)0.529 Nanogram per milliliter (ng/mL)Standard Deviation 0.612
Galcanezumab 120mgPlasma Concentration of Calcitonin Gene-Related Peptide (CGRP)4.02 Nanogram per milliliter (ng/mL)Standard Deviation 1.7
Galcanezumab 240mgPlasma Concentration of Calcitonin Gene-Related Peptide (CGRP)4.85 Nanogram per milliliter (ng/mL)Standard Deviation 1.76
Secondary

Serum Concentrations of Galcanezumab

Serum concentrations of Galcanezumab

Time frame: Month 3

Population: All randomized participants who received at least one dose of Galcanezumab and had measurable serum concentrations.

ArmMeasureValue (MEAN)Dispersion
PlaceboSerum Concentrations of Galcanezumab16900 Nanogram per milliliter (ng/mL)Standard Deviation 7140
Galcanezumab 120mgSerum Concentrations of Galcanezumab29000 Nanogram per milliliter (ng/mL)Standard Deviation 11300

Source: ClinicalTrials.gov · Data processed: Mar 4, 2026