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A Randomized, Double-Blind, Placebo-Controlled Study With an Open-Label Period on Efficacy and Safety of Fremanezumab in Chinese Adults With Migraine

A Multicenter, Randomized, Double-Blind, Placebo-Controlled Efficacy and Safety Study With an Open-Label Treatment Period of Fremanezumab Administered Subcutaneously Monthly or Quarterly for the Preventive Treatment of Migraine in Adult Chinese Patients

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05458011
Enrollment
365
Registered
2022-07-14
Start date
2022-09-30
Completion date
2024-06-13
Last updated
2025-11-26

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

Conditions

Migraine

Brief summary

Primary Objective: To demonstrate the efficacy of fremanezumab administered as monthly and quarterly subcutaneous (sc) injections to adult Chinese participants with migraine. Secondary Objectives: * To further demonstrate the efficacy of fremanezumab administered as monthly and quarterly sc injections. * To evaluate the safety and tolerability of fremanezumab administered as monthly and quarterly sc injections.

Detailed description

The total study duration for participants is planned to be approximately 9 months. The study will consist of a screening visit, a baseline period (4 weeks), a 12-week double-blind treatment period, a 12-week open-label treatment period, and a follow-up period lasting approximately 3 months after the last dose of treatment.

Interventions

DRUGFremanezumab

Pharmaceutical form: solution for injection Route of administration: subcutaneous injection

DRUGPlacebo

Pharmaceutical form: solution for injection Route of administration: subcutaneous injection

Sponsors

Teva Branded Pharmaceutical Products R&D, Inc.
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* The participant has a diagnosis of migraine with onset at ≤50 years of age. * The participant has a body weight ≥45 kg and body mass index within the range 17.5 to 34.9 kg/m2 (inclusive). * The participant has a history of migraine for ≥12 months prior to screening. * Women of childbearing potential (WOCBP) whose male partners are potentially fertile (that is; no vasectomy) must use highly effective birth control methods for the duration of the study and for 6.0 months after discontinuation of investigational medicinal product (IMP). * Men must be sterile or, if they are potentially fertile/reproductively competent (not congenitally sterile) and their female partners are of childbearing potential, should use highly effective birth control for the duration of the study. * Additional criteria apply, please contact the investigator for more information.

Exclusion criteria

* Use of medications containing opioids (including codeine), barbiturates (including butalbital), or any combination product containing opioids or barbiturates (including butalbital) on more than 4 days during the screening period for the treatment of migraine or for any other reason. * Has used an intervention/device (eg, scheduled nerve blocks or transcranial magnetic stimulation) for migraine, or in the head or neck area, during the 2 months prior to screening (visit 1). * History of clinically significant cardiovascular disease or vascular ischemia (such as myocardial, neurological \[eg, cerebral ischemia\], or peripheral extremity ischemia or other ischemic event) or thromboembolic events (arterial or venous thrombotic or embolic events), such as cerebrovascular accident (including transient ischemic attacks), deep vein thrombosis, or pulmonary embolism. * History of human immunodeficiency virus, tuberculosis, Lyme disease, or a known or suspected active infection of coronavirus disease 2019 (COVID-19). * Known current infection or history of infection in the past 6 months with hepatitis B or C viruses. * History of cancer in the past 5 years, except for appropriately treated non-melanoma skin carcinoma. * History of hypersensitivity reactions to injected proteins, including monoclonal antibodies (mAbs), or a history of Stevens-Johnson Syndrome or toxic epidermal necrolysis syndrome, or is concomitantly using lamotrigine. * Any clinically significant uncontrolled medical condition (treated or untreated). * History of alcohol or drug abuse during the past 2 years or drug dependence during the past 5 years. * Additional criteria apply, please contact the investigator for more information.

Design outcomes

Primary

MeasureTime frameDescription
Double Blind (DB) Period: Mean Change From Baseline in Monthly Average Number of Migraine Days During the 12-Week Period After the First Dose of FremanezumabBaseline (Day -28 to Day -1), up to Week 12A migraine day was defined as a calendar day where the participant reported either of the following: A calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for migraine with or without aura or; a calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for probable migraine, a migraine subtype where only 1 migraine criterion is missing; a calendar day (0:00 to 23:59) demonstrating a headache of any duration that was treated with migraine specific medications (triptans and ergot compounds). Monthly averages were derived and normalized to 28 days equivalent by formula: (number of days of efficacy variable over 12-week period/number of days with assessments recorded in e-diary for 12-week period) \* 28. Least square (LS) mean was calculated using analysis of covariance (ANCOVA).

Secondary

MeasureTime frameDescription
DB Period: Mean Change From Baseline in the Monthly Average Number of Days of Use of Any Acute Headache Medications During the 12-Week Period After the First Dose of FremanezumabBaseline (Day -28 to Day -1), Up to Week 12Participants recorded any headache medications (name of drug, number of tablets/capsules, and the dose in milligrams per tablet/capsule) taken each day in their electronic headache diary device. Acute headache medication included opioids, barbiturates, triptans, ergots, non-steroidal anti-inflammatory drugs (NSAIDs), acetaminophen and their combination products. Monthly averages were derived and normalized to 28 days equivalent by formula: (number of days of efficacy variable over 12-week period/number of days with assessments recorded in e-diary for 12-week period) \* 28.
DB Period: Number of Participants Reaching at Least 50% Reduction From Baseline in Monthly Average Number of Migraine Days During the 12-Week Period After the First Dose of FremanezumabBaseline (Day -28 to Day-1), Up to Week 12A migraine day was defined as a calendar day where the participant reported either of the following: A calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for migraine with or without aura or; a calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for probable migraine, a migraine subtype where only 1 migraine criterion is missing; a calendar day (0:00 to 23:59) demonstrating a headache of any duration that was treated with migraine specific medications (triptans and ergot compounds). Monthly averages were derived and normalized to 28 days equivalent by formula: (number of days of efficacy variable over 12-week period/number of days with assessments recorded in e-diary for 12-week period) \* 28.
DB Period: Mean Change From Baseline in the Monthly Average Number of Headache Days of at Least Moderate Severity During the 12-Week Period After the First Dose of FremanezumabBaseline (Day -28 to Day -1), Up to Week 12A headache day of at least moderate severity was defined as a calendar day (00:00 to 23:59) where the participant reported either of the following: A calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of headache of at least moderate severity; or a calendar day (0:00 to 23:59) demonstrating a headache of any duration that was treated with migraine-specific acute medications (triptans and ergot compounds). Monthly averages were derived and normalized to 28 days equivalent by formula: (number of days of efficacy variable over 12-week period/number of days with assessments recorded in e-diary for 12-week period) \* 28.
DB Period: Number of Participants With At Least One Treatment-Emergent Adverse Event (TEAE)Week 0 up to Week 12An adverse event (AE) was defined as any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. Serious AEs (SAEs) were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. TEAEs were defined as AEs that occurred after the first dose of study drug was administered through end of the trial. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.
DB Period: Number of Participants Who Did Not Complete the Study Due to AEsWeek 0 up to Week 12An AE was defined as any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAEs were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. TEAEs were defined as AEs that occurred after the first dose of study drug was administered through end of the trial. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.
DB Period: Mean Change From Baseline in the Average Number of Migraine Days During the 4-Week Period After the First Dose of FremanezumabBaseline (Day -28 to Day -1), Up to Week 4A migraine day was defined as a calendar day where the participant reported either of the following: A calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for migraine with or without aura or; a calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for probable migraine, a migraine subtype where only 1 migraine criterion is missing; a calendar day (0:00 to 23:59) demonstrating a headache of any duration that was treated with migraine specific medications (triptans and ergot compounds). Monthly averages were derived and normalized to 28 days equivalent by formula: (number of days of efficacy variable over 4-week period/number of days with assessments recorded in e-diary for 4-week period) \* 28.
OL Period: Number of Participants Who Did Not Complete the Study Due to AEsWeek 12 up to Week 24An AE was defined as any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAEs were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. TEAEs were defined as AEs that occurred after the first dose of study drug was administered through end of the trial. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.
DB Period: Number of Participants Who Received Concomitant Medications for AEsWeek 0 up to Week 12Concomitant medications included all medications taken while the participant was treated with the study drug. Any concomitant medication received by the participant for AEs was recorded on the case report form (CRF). Concomitant medications included: butalbital for migraine/headache, ergots for migraine/headache, NSAIDs for migraine/headache, NSAIDs for other reason than migraine/headache, opioids for migraine/headache, opioids for reasons other reason than migraine/headache, preventive medication as specified in the protocol for migraine/headache, preventive medication as specified in the protocol for other reason than migraine/headache, triptans for migraine/headache.
OL Period: Number of Participants Who Received Concomitant Medications for AEsWeek 12 up to Week 24Concomitant medications included all medications taken while the participant was treated with the study drug. Any concomitant medication received by the participant for AEs was recorded on the case report form (CRF). Concomitant medications included: butalbital for migraine/headache, ergots for migraine/headache, NSAIDs for migraine/headache, NSAIDs for other reason than migraine/headache, opioids for migraine/headache, opioids for reasons other reason than migraine/headache, preventive medication as specified in the protocol for migraine/headache, preventive medication as specified in the protocol for other reason than migraine/headache, triptans for migraine/headache.
Number of Participants With Treatment Emergent Anti-Drug Antibodies (ADA)Day 1 up to Day 225
Number of Participants With Treatment-Emergent Neutralizing Antibodies (NAbs)Day 1 up to Day 225
OL Period: Number of Participants With at Least One TEAEWeek 12 up to Week 24An AE was defined as any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAEs were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. TEAEs were defined as AEs that occurred after the first dose of study drug was administered through end of the trial. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.

Countries

China

Participant flow

Pre-assignment details

A total of 454 participants were screened; of which 365 participants were randomized and included in the analysis.

Participants by arm

ArmCount
Placebo
DB Period: Participants received placebo SC once a month (approximately every 4 weeks). Participants received 3 placebo injections on Day 1, and a single injection of placebo on Days 29 and 57. OL Period: Participants received fremanezumab SC once a month (approximately every 4 weeks) administered as a single injection on Days 85, 113, and 141.
183
Fremanezumab Monthly
DB Period: Participants received fremanezumab SC once a month (approximately every 4 weeks). Participants received a single injection of fremanezumab and two placebo injections on Day 1, and a single injection of fremanezumab on Days 29 and 57. OL Period: Participants received fremanezumab SC once a month (approximately every 4 weeks) administered as a single injection on Days 85, 113, and 141.
91
Fremanezumab Quarterly
DB Period: Participants received fremanezumab SC once a quarter (once at the beginning of the 12-week DB treatment period). Participants received 3 injections of fremanezumab on Day 1, and a single placebo injection on Days 29 and 57. OL Period: Participants received fremanezumab SC once a month (approximately every 4 weeks) administered as a single injection on Days 85, 113, and 141.
91
Total365

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
DB Period (12 Weeks)Adverse Event211
DB Period (12 Weeks)Non-compliance with trial drug001
DB Period (12 Weeks)Protocol deviation022
DB Period (12 Weeks)Withdrawal by Subject411
OL Period (12 Weeks)Adverse Event121
OL Period (12 Weeks)Withdrawal by Subject030

Baseline characteristics

CharacteristicPlaceboFremanezumab MonthlyFremanezumab QuarterlyTotal
Age, Continuous38.8 years
STANDARD_DEVIATION 10.03
38.6 years
STANDARD_DEVIATION 9.42
39.7 years
STANDARD_DEVIATION 10.89
38.9 years
STANDARD_DEVIATION 10.09
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
183 Participants91 Participants90 Participants364 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants1 Participants1 Participants
Number of Migraine Days11.0 days
STANDARD_DEVIATION 4.96
10.4 days
STANDARD_DEVIATION 5.94
10.4 days
STANDARD_DEVIATION 5.2
10.7 days
STANDARD_DEVIATION 5.27
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
183 Participants91 Participants91 Participants365 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Female
142 Participants71 Participants73 Participants286 Participants
Sex: Female, Male
Male
41 Participants20 Participants18 Participants79 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
deaths
Total, all-cause mortality
0 / 1830 / 910 / 910 / 1750 / 860 / 85
other
Total, other adverse events
30 / 18323 / 9115 / 9133 / 17523 / 8616 / 85
serious
Total, serious adverse events
1 / 1832 / 910 / 910 / 1752 / 862 / 85

Outcome results

Primary

Double Blind (DB) Period: Mean Change From Baseline in Monthly Average Number of Migraine Days During the 12-Week Period After the First Dose of Fremanezumab

A migraine day was defined as a calendar day where the participant reported either of the following: A calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for migraine with or without aura or; a calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for probable migraine, a migraine subtype where only 1 migraine criterion is missing; a calendar day (0:00 to 23:59) demonstrating a headache of any duration that was treated with migraine specific medications (triptans and ergot compounds). Monthly averages were derived and normalized to 28 days equivalent by formula: (number of days of efficacy variable over 12-week period/number of days with assessments recorded in e-diary for 12-week period) \* 28. Least square (LS) mean was calculated using analysis of covariance (ANCOVA).

Time frame: Baseline (Day -28 to Day -1), up to Week 12

Population: DB mITT analysis set included participants who received at least 1 dose of study drug and had at least 10 days of postbaseline efficacy assessment on the primary endpoint. Efficacy analysis was planned to be evaluated combined for both fremanezumab dose treatment groups.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboDouble Blind (DB) Period: Mean Change From Baseline in Monthly Average Number of Migraine Days During the 12-Week Period After the First Dose of Fremanezumab-2.8 days/monthStandard Error 0.48
Fremanezumab Monthly/QuarterlyDouble Blind (DB) Period: Mean Change From Baseline in Monthly Average Number of Migraine Days During the 12-Week Period After the First Dose of Fremanezumab-4.6 days/monthStandard Error 0.48
p-value: <0.000195% CI: [-2.66, -0.95]ANCOVA
Secondary

DB Period: Mean Change From Baseline in the Average Number of Migraine Days During the 4-Week Period After the First Dose of Fremanezumab

A migraine day was defined as a calendar day where the participant reported either of the following: A calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for migraine with or without aura or; a calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for probable migraine, a migraine subtype where only 1 migraine criterion is missing; a calendar day (0:00 to 23:59) demonstrating a headache of any duration that was treated with migraine specific medications (triptans and ergot compounds). Monthly averages were derived and normalized to 28 days equivalent by formula: (number of days of efficacy variable over 4-week period/number of days with assessments recorded in e-diary for 4-week period) \* 28.

Time frame: Baseline (Day -28 to Day -1), Up to Week 4

Population: DB mITT analysis set included participants who received at least 1 dose of study drug and had at least 10 days of postbaseline efficacy assessment on the primary endpoint. Efficacy analysis was planned to be evaluated combined for both fremanezumab dose treatment groups.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboDB Period: Mean Change From Baseline in the Average Number of Migraine Days During the 4-Week Period After the First Dose of Fremanezumab-2.2 daysStandard Error 0.52
Fremanezumab Monthly/QuarterlyDB Period: Mean Change From Baseline in the Average Number of Migraine Days During the 4-Week Period After the First Dose of Fremanezumab-4.5 daysStandard Error 0.52
Secondary

DB Period: Mean Change From Baseline in the Monthly Average Number of Days of Use of Any Acute Headache Medications During the 12-Week Period After the First Dose of Fremanezumab

Participants recorded any headache medications (name of drug, number of tablets/capsules, and the dose in milligrams per tablet/capsule) taken each day in their electronic headache diary device. Acute headache medication included opioids, barbiturates, triptans, ergots, non-steroidal anti-inflammatory drugs (NSAIDs), acetaminophen and their combination products. Monthly averages were derived and normalized to 28 days equivalent by formula: (number of days of efficacy variable over 12-week period/number of days with assessments recorded in e-diary for 12-week period) \* 28.

Time frame: Baseline (Day -28 to Day -1), Up to Week 12

Population: DB mITT analysis set included participants who received at least 1 dose of study drug and had at least 10 days of postbaseline efficacy assessment on the primary endpoint. Efficacy analysis was planned to be evaluated combined for both fremanezumab dose treatment groups.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboDB Period: Mean Change From Baseline in the Monthly Average Number of Days of Use of Any Acute Headache Medications During the 12-Week Period After the First Dose of Fremanezumab-1.1 days/monthStandard Error 0.41
Fremanezumab Monthly/QuarterlyDB Period: Mean Change From Baseline in the Monthly Average Number of Days of Use of Any Acute Headache Medications During the 12-Week Period After the First Dose of Fremanezumab-3.0 days/monthStandard Error 0.41
Secondary

DB Period: Mean Change From Baseline in the Monthly Average Number of Headache Days of at Least Moderate Severity During the 12-Week Period After the First Dose of Fremanezumab

A headache day of at least moderate severity was defined as a calendar day (00:00 to 23:59) where the participant reported either of the following: A calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of headache of at least moderate severity; or a calendar day (0:00 to 23:59) demonstrating a headache of any duration that was treated with migraine-specific acute medications (triptans and ergot compounds). Monthly averages were derived and normalized to 28 days equivalent by formula: (number of days of efficacy variable over 12-week period/number of days with assessments recorded in e-diary for 12-week period) \* 28.

Time frame: Baseline (Day -28 to Day -1), Up to Week 12

Population: DB mITT analysis set included participants who received at least 1 dose of study drug and had at least 10 days of postbaseline efficacy assessment on the primary endpoint. Efficacy analysis was planned to be evaluated combined for both fremanezumab dose treatment groups.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
PlaceboDB Period: Mean Change From Baseline in the Monthly Average Number of Headache Days of at Least Moderate Severity During the 12-Week Period After the First Dose of Fremanezumab-2.4 days/monthStandard Error 0.43
Fremanezumab Monthly/QuarterlyDB Period: Mean Change From Baseline in the Monthly Average Number of Headache Days of at Least Moderate Severity During the 12-Week Period After the First Dose of Fremanezumab-4.5 days/monthStandard Error 0.43
Secondary

DB Period: Number of Participants Reaching at Least 50% Reduction From Baseline in Monthly Average Number of Migraine Days During the 12-Week Period After the First Dose of Fremanezumab

A migraine day was defined as a calendar day where the participant reported either of the following: A calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for migraine with or without aura or; a calendar day (0:00 to 23:59) demonstrating at least 2 consecutive hours of a headache meeting the criteria for probable migraine, a migraine subtype where only 1 migraine criterion is missing; a calendar day (0:00 to 23:59) demonstrating a headache of any duration that was treated with migraine specific medications (triptans and ergot compounds). Monthly averages were derived and normalized to 28 days equivalent by formula: (number of days of efficacy variable over 12-week period/number of days with assessments recorded in e-diary for 12-week period) \* 28.

Time frame: Baseline (Day -28 to Day-1), Up to Week 12

Population: DB mITT analysis set included participants who received at least 1 dose of study drug and had at least 10 days of postbaseline efficacy assessment on the primary endpoint. Efficacy analysis was planned to be evaluated combined for both fremanezumab dose treatment groups.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboDB Period: Number of Participants Reaching at Least 50% Reduction From Baseline in Monthly Average Number of Migraine Days During the 12-Week Period After the First Dose of Fremanezumab63 Participants
Fremanezumab Monthly/QuarterlyDB Period: Number of Participants Reaching at Least 50% Reduction From Baseline in Monthly Average Number of Migraine Days During the 12-Week Period After the First Dose of Fremanezumab103 Participants
Secondary

DB Period: Number of Participants Who Did Not Complete the Study Due to AEs

An AE was defined as any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAEs were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. TEAEs were defined as AEs that occurred after the first dose of study drug was administered through end of the trial. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.

Time frame: Week 0 up to Week 12

Population: DB safety analysis set included all randomized participants who received at least 1 dose of study drug during the DB treatment period.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboDB Period: Number of Participants Who Did Not Complete the Study Due to AEs2 Participants
Fremanezumab Monthly/QuarterlyDB Period: Number of Participants Who Did Not Complete the Study Due to AEs1 Participants
DB Period: Fremanezumab QuarterlyDB Period: Number of Participants Who Did Not Complete the Study Due to AEs1 Participants
Secondary

DB Period: Number of Participants Who Received Concomitant Medications for AEs

Concomitant medications included all medications taken while the participant was treated with the study drug. Any concomitant medication received by the participant for AEs was recorded on the case report form (CRF). Concomitant medications included: butalbital for migraine/headache, ergots for migraine/headache, NSAIDs for migraine/headache, NSAIDs for other reason than migraine/headache, opioids for migraine/headache, opioids for reasons other reason than migraine/headache, preventive medication as specified in the protocol for migraine/headache, preventive medication as specified in the protocol for other reason than migraine/headache, triptans for migraine/headache.

Time frame: Week 0 up to Week 12

Population: DB safety analysis set included all randomized participants who received at least 1 dose of study drug during the DB treatment period.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboDB Period: Number of Participants Who Received Concomitant Medications for AEs51 Participants
Fremanezumab Monthly/QuarterlyDB Period: Number of Participants Who Received Concomitant Medications for AEs28 Participants
DB Period: Fremanezumab QuarterlyDB Period: Number of Participants Who Received Concomitant Medications for AEs23 Participants
Secondary

DB Period: Number of Participants With At Least One Treatment-Emergent Adverse Event (TEAE)

An adverse event (AE) was defined as any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. Serious AEs (SAEs) were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. TEAEs were defined as AEs that occurred after the first dose of study drug was administered through end of the trial. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.

Time frame: Week 0 up to Week 12

Population: DB safety analysis set included all randomized participants who received at least 1 dose of study drug during the DB treatment period.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboDB Period: Number of Participants With At Least One Treatment-Emergent Adverse Event (TEAE)79 Participants
Fremanezumab Monthly/QuarterlyDB Period: Number of Participants With At Least One Treatment-Emergent Adverse Event (TEAE)48 Participants
DB Period: Fremanezumab QuarterlyDB Period: Number of Participants With At Least One Treatment-Emergent Adverse Event (TEAE)37 Participants
Secondary

Number of Participants With Treatment Emergent Anti-Drug Antibodies (ADA)

Time frame: Day 1 up to Day 225

Population: Participants who received fremanezumab were analyzed for ADA.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Treatment Emergent Anti-Drug Antibodies (ADA)28 Participants
Fremanezumab Monthly/QuarterlyNumber of Participants With Treatment Emergent Anti-Drug Antibodies (ADA)11 Participants
DB Period: Fremanezumab QuarterlyNumber of Participants With Treatment Emergent Anti-Drug Antibodies (ADA)9 Participants
Secondary

Number of Participants With Treatment-Emergent Neutralizing Antibodies (NAbs)

Time frame: Day 1 up to Day 225

Population: Participants who received fremanezumab were analyzed for ADA.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Treatment-Emergent Neutralizing Antibodies (NAbs)27 Participants
Fremanezumab Monthly/QuarterlyNumber of Participants With Treatment-Emergent Neutralizing Antibodies (NAbs)11 Participants
DB Period: Fremanezumab QuarterlyNumber of Participants With Treatment-Emergent Neutralizing Antibodies (NAbs)9 Participants
Secondary

OL Period: Number of Participants Who Did Not Complete the Study Due to AEs

An AE was defined as any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAEs were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. TEAEs were defined as AEs that occurred after the first dose of study drug was administered through end of the trial. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.

Time frame: Week 12 up to Week 24

Population: The OL safety analysis set included all participants who received at least 1 dose of study drug during the OL treatment period.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboOL Period: Number of Participants Who Did Not Complete the Study Due to AEs1 Participants
Fremanezumab Monthly/QuarterlyOL Period: Number of Participants Who Did Not Complete the Study Due to AEs1 Participants
DB Period: Fremanezumab QuarterlyOL Period: Number of Participants Who Did Not Complete the Study Due to AEs1 Participants
Secondary

OL Period: Number of Participants Who Received Concomitant Medications for AEs

Concomitant medications included all medications taken while the participant was treated with the study drug. Any concomitant medication received by the participant for AEs was recorded on the case report form (CRF). Concomitant medications included: butalbital for migraine/headache, ergots for migraine/headache, NSAIDs for migraine/headache, NSAIDs for other reason than migraine/headache, opioids for migraine/headache, opioids for reasons other reason than migraine/headache, preventive medication as specified in the protocol for migraine/headache, preventive medication as specified in the protocol for other reason than migraine/headache, triptans for migraine/headache.

Time frame: Week 12 up to Week 24

Population: The OL safety analysis set included all participants who received at least 1 dose of study drug during the OL treatment period.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboOL Period: Number of Participants Who Received Concomitant Medications for AEs46 Participants
Fremanezumab Monthly/QuarterlyOL Period: Number of Participants Who Received Concomitant Medications for AEs26 Participants
DB Period: Fremanezumab QuarterlyOL Period: Number of Participants Who Received Concomitant Medications for AEs30 Participants
Secondary

OL Period: Number of Participants With at Least One TEAE

An AE was defined as any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAEs were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. TEAEs were defined as AEs that occurred after the first dose of study drug was administered through end of the trial. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.

Time frame: Week 12 up to Week 24

Population: The OL safety analysis set included all participants who received at least 1 dose of study drug during the OL treatment period.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboOL Period: Number of Participants With at Least One TEAE78 Participants
Fremanezumab Monthly/QuarterlyOL Period: Number of Participants With at Least One TEAE40 Participants
DB Period: Fremanezumab QuarterlyOL Period: Number of Participants With at Least One TEAE38 Participants

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