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A Study to Evaluate the Efficacy and Safety of Oral Zavegepant in Migraine Prevention

A Phase 2/3 Randomized, Double-Blind, Placebo- Controlled Study to Evaluate the Efficacy and Safety of Oral Zavegepant in Migraine Prevention

Status
Terminated
Phases
Phase 2Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04804033
Enrollment
1753
Registered
2021-03-18
Start date
2021-03-26
Completion date
2024-03-21
Last updated
2025-03-27

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

Conditions

Migraine

Keywords

Migraine Prevention, Phonophobia, Photophobia, Nausea

Brief summary

The purpose of this is study is to compare the efficacy of BHV-3500 (zavegepant) to placebo as a preventive treatment for migraine, as measured by the reduction in the number of migraine days per month.

Interventions

DRUGBHV-3500 (zavegepant)

BHV-3500 (zavegepant) softgel capsule.

DRUGPlacebo

Matching placebo softgel capsule.

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

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

Inclusion criteria

Subject has at least 1 year history of migraine (with or without aura) consistent with a diagnosis according to the International Classification of Headache Disorders, 3rd Edition, including the following: 1. Age of onset of migraines prior to 50 years of age 2. Migraine attacks, on average, lasting 4 - 72 hours if untreated 3. Per subject report, at least 15 headache days per month, at lest 8 migraine days per month, and at least 1 headache-free day per month within the last 3 months prior to the Screening Visit 4. Eight or more migraine days during the Observation Period 5. 15 or more headache days during the Observation Period 6. One or more non-headache days during the Observation Period 7. Ability to distinguish migraine attacks from tension/cluster headaches 8. Subjects on prophylactic migraine medication are permitted to remain on 1 medication with possible migraine-prophylactic effects if the dose has been stable for at least 3 months prior to the Screening Visit, and the dose is not expected to change during the course of the study.

Exclusion criteria

1. Subject with a history of HIV disease 2. Subject history with current evidence of uncontrolled, unstable or recently diagnosed cardiovascular disease, such as ischemic heart disease, coronary artery vasospasm, and cerebral ischemia. Subjects with Myocardial Infarction (MI), Acute Coronary Syndrome (ACS), Percutaneous Coronary Intervention (PCI), cardiac surgery, stroke or transient ischemic attack (TIA) during the 6 months prior to screening 3. Uncontrolled hypertension (high blood pressure), or uncontrolled diabetes (however subjects can be included who have stable hypertension and/or diabetes for at least 3 months prior to screening). 4. Subjects with major depressive episode or anxiety disorder which require more than 1 daily medication for each disorder or subjects with a major depressive episode within the last 12 months. Medications to treat major depressive disorder or an anxiety disorder must have been at a stable dose for at least 3 months prior to the Screening Visit. 5. Subjects with active chronic pain syndromes, other pain syndromes (including trigeminal neuralgia), psychiatric conditions, dementia, or significant neurological disorders (other than migraine) that, in the Investigator's opinion interfere with study assessments of safety or efficacy. 6. Subject has a history of gastric, or small intestinal surgery (including Gastric Bypass, Gastric Banding, Gastric Sleeve, Gastric Balloon, etc.), or has disease or condition (e.g. chronic pancreatitis, ulcerative colitis, etc.) that causes malabsorption. 7. Body mass index \> 33 kg/m2 8. History of gallstones or cholecystectomy. 9. The subject has a history or current evidence of any unstable medical conditions (e.g., history of congenital heart disease or arrhythmia, known or suspected infection, hepatitis B or C, or cancer) that, in the investigator's opinion, would expose them to undue risk of a significant adverse event (AE) or interfere with assessments of safety or efficacy during the course of the trial

Design outcomes

Primary

MeasureTime frameDescription
Mean Change From Observation Phase (OP) in the Number of Migraine Days Per Month Over Entire DBT Phase (Weeks 1 to 12)Observation Phase: 28 days prior to randomization and baseline; Entire DBT Phase: 12 weeks (Week 1 through 12)A migraine day was defined as any calendar day in which participant experienced a qualified migraine headache (onset, continuation or recurrence of migraine headache). A qualified migraine headache was defined as migraine with or without aura, lasting for greater than or equal to (\>=) 30 minutes, and met at least one of the following criteria (A and/or B): A. \>=2 of the following pain features: a. Unilateral location, b. Pulsating quality (throbbing), c. Moderate or severe pain intensity, d. Aggravation by or causing avoidance of routine physical activity (e.g. walking or climbing stairs) B. \>= 1 of following associated symptoms: a. Nausea and/or vomiting b. Photophobia and phonophobia. The number of migraine days per month were prorated to 28 days and derived as follows: 28\*(total number of migraine days through Month 3\[Weeks 1 to 12\] in on-DBT efficacy analysis period)/ (total number of eDiary efficacy data days through Month 3\[Weeks 1 to 12\] in the on-DBT efficacy analysis period).

Secondary

MeasureTime frameDescription
Mean Change From Observation Phase in the Number of Migraine Days Per Month in the Last 4 Weeks (Weeks 9 to 12) of DBT PhaseObservation Phase: 28 days prior to randomization and baseline; DBT Phase: last 4 weeks (Week 9 through 12)A migraine day was defined as any calendar day in which the participant experienced a qualified migraine headache (onset, continuation or recurrence of the migraine headache). A qualified migraine headache was defined as a migraine with or without aura, lasting for greater than or equal to (\>=) 30 minutes, and met at least one of the following criteria (A and/or B): A.\>=2 of the following pain features: a. Unilateral location, b. Pulsating quality (throbbing), c. Moderate or severe pain intensity, d. Aggravation by or causing avoidance of routine physical activity (e.g. walking or climbing stairs) B. \>= 1 of the following associated symptoms: a. Nausea and/or vomiting b. Photophobia and phonophobia. The number of migraine days per month were prorated to 28 days and derived for month (i.e., 4-week interval) in on-DBT efficacy analysis period as follows: 28\* (total number of migraine days in the month\[Week 9 to 12\])/(total number of eDiary efficacy data days in the month\[Week 9 to 12\]).
Mean Change From Observation Phase in the Number of Migraine Days Per Month in the First 4 Weeks (Weeks 1 to 4) of DBT PhaseObservation Phase: 28 days prior to randomization and baseline; DBT Phase: first 4 weeks (Week 1 through 4)A migraine day was defined as any calendar day in which participant experienced a qualified migraine headache (onset, continuation or recurrence of the migraine headache). A qualified migraine headache was defined as a migraine with or without aura, lasting for greater than or equal to (\>=) 30 minutes, and met at least one of the following criteria (A and/or B): A. \>=2 of the following pain features: a. Unilateral location, b. Pulsating quality (throbbing), c. Moderate or severe pain intensity, d. Aggravation by or causing avoidance of routine physical activity (e.g. walking or climbing stairs) B. \>= 1 of the following associated symptoms: a. Nausea and/or vomiting b. Photophobia and phonophobia. The number of migraine days per month were prorated to 28 days and derived for month (i.e., 4-week interval) in the on-DBT efficacy analysis period as follows: 28\* (total number of migraine days in the month\[Week 1 to 4\])/ (total number of eDiary efficacy data days in the month\[Week 1 to 4\]).
Mean Number of Acute Migraine -Specific Medication Days Per Month Over Entire DBT Phase (Weeks 1 to 12)Entire DBT Phase: 12 weeks (Week 1 through 12)Acute migraine (AM)-specific medication day was defined as any calendar day on which the participant took an acute migraine-specific medication during aura or to treat a headache. Acute migraine-specific medications were triptans and ergotamine. The number of acute migraine-specific medication days per month were prorated to 28 days and derived as follows: 28 \* (total number of acute migraine-specific medication days through Month 3 \[Week 1 to 12\] in the on-DBT efficacy analysis period)/ (total number of eDiary efficacy data days through Month 3 \[Week 1 to 12\] in the on-DBT efficacy analysis period).
Mean Change From Baseline in the Migraine-specific Quality of Life Questionnaire (MSQ) v 2.1 Restrictive Role Function Domain Score at Week 12DBT Phase: Baseline (before dose on Day 1), Week 12MSQ v 2.1 is 14-item questionnaire that assessed impact of treatment on participant-reported quality of life across 3 domains: role function-restrictive, preventive, and emotional function. Restrictive role function domain consists of 7 items that describe how migraine limits one's daily social, work-related activities. Participants respond to items using a 6-point scale ranging from 1 (none of the time) to 6 (all of the time), which are assigned scores of 1 to 6, respectively. Response from each item of restrictive role function domain were added providing a possible raw score range of 7 (no impairment) to 42 (maximum impairment). Raw score range of restrictive role function domain was then transformed to a 0 (no impairment) to 100 (maximum impairment), higher scores = higher impairment.
Mean Change From Baseline in the Migraine Disability Assessment (MIDAS) Total Score at Week 12DBT Phase: Baseline (before dose on Day 1), Week 12MIDAS is a retrospective, participant-reported, 5-item questionnaire that measured headache related disability as lost days due to headache from paid work or school, household work and non-work activities over past 3-months. The total score is calculated as the sum of item scores to all 5 questions on a scale of 0 (no disability) to 90 (maximum disability) resulting into overall possible MIDAS total score (range from 0 (no disability) to 450 (maximum disability). Higher scores = more severe disability.
Number of Participants With Moderate or Severe Adverse Events (AEs): DBT PhaseDBT Phase: During 12 weeks of treatmentAEs: new untoward medical occurrence or worsening of a pre-existing medical condition in participant or clinical investigation participant administered investigational product that does not necessarily have a causal relationship with treatment. AEs included both SAEs and all non-SAEs. Severity: Moderate=Alleviated with additional specific therapeutic intervention, interfered with activities of daily living, causing discomfort, but possessed no significant or permanent risk of harm. Severe= Interrupted activities of daily living significantly affected clinical status or required intensive therapeutic intervention.
Number of Participants With Serious Adverse Events (SAEs): DBT PhaseDBT Phase: During 12 weeks of treatmentAEs: new untoward medical occurrence or worsening of a pre-existing medical condition in participant or clinical investigation participant administered investigational product that does not necessarily have a causal relationship with treatment. SAE was defined as any event that met any of the following criteria: death; life-threatening; inpatient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect in the offspring of a participant; other important medical events that may not have resulted in death, be life-threatening, or required hospitalization, based upon appropriate medical judgment, they may have jeopardized the participant and may have required medical or surgical intervention.
Number of Participants With AEs Leading to Study Drug Discontinuation: DBT PhaseDBT Phase: During 12 weeks of treatmentAn AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment.
Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseDBT: During 12 weeks of treatmentLaboratory tests included eosinophils, hemoglobin, leukocytes, lymphocytes, neutrophils, platelets; albumin, alkaline phosphatase, alanine aminotransferase (ALT), aspartate aminotransferase (AST), bicarbonate, bilirubin, calcium, cholesterol, potassium, sodium, triglycerides, uric acid, urinalysis, urine protein, creatine kinase (CK), creatinine, glomerular filtration rate (GFR), glucose, glucose fasting, lactate dehydrogenase, low density lipoprotein (LDL) Cholesterol, LDL Cholesterol. Number of participants with grade 3 to 4 laboratory test abnormalities were evaluated in this outcome measure. Only rows which included at least 1 participant in any reporting group with grade 3 to 4 abnormality were reported in this outcome measure. As per Common Terminology Criteria for Adverse Events (CTCAE version 5.0) Grade 3= severe and Grade 4= life-threatening or disabling.
Percentage of Participants With >= 50 % Reduction in Number of Moderate to Severe Migraine Days Per Month Over Entire DBT Phase (Weeks 1 to 12)Entire DBT Phase: 12 weeks (Week 1 through 12)A migraine day was defined as any calendar day in which participant experienced a qualified migraine headache (onset, continuation or recurrence of the migraine headache). A qualified migraine headache was defined as migraine with or without aura, lasting for greater than or equal to (\>=) 30 minutes, and met at least one of following criteria (A and/or B): A. \>=2 of following pain features: a. Unilateral location, b. Pulsating quality (throbbing), c. Moderate or severe pain intensity, d. Aggravation by or causing avoidance of routine physical activity (e.g. walking or climbing stairs) B. \>= 1 of the following associated symptoms: a. Nausea and/or vomiting b. Photophobia and phonophobia. The number of migraine days per month were prorated to 28 days and derived as follows: 28\*(total number of migraine days through Month 3\[Weeks 1 to 12\] in the on-DBT efficacy analysis period)/ (total number of eDiary efficacy data days through Month 3\[Weeks 1 to 12\] in on-DBT efficacy analysis period).
Number of Participants With SAEs: OLE PhaseOLE: During 52 weeks of treatmentAEs: new untoward medical occurrence or worsening of a pre-existing medical condition in participant or clinical investigation participant administered investigational product that does not necessarily have a causal relationship with treatment. SAE was defined as any event that met any of the following criteria: death; life-threatening; inpatient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect in the offspring of a participant; other important medical events that may not have resulted in death, be life-threatening, or required hospitalization, based upon appropriate medical judgment, they may have jeopardized the participant and may have required medical or surgical intervention.
Number of Participants With AEs Leading to Study Drug Discontinuation: OLE PhaseOLE: During 52 weeks of treatmentAn AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment.
Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseOLE: During 52 weeks of treatmentLaboratory tests included eosinophils, hemoglobin, leukocytes, lymphocytes, neutrophils, platelets; albumin, alkaline phosphatase, alanine aminotransferase (ALT), aspartate aminotransferase (AST), bicarbonate, bilirubin, calcium, cholesterol, potassium, sodium, triglycerides, uric acid, urinalysis, urine protein, creatine kinase (CK), creatinine, glomerular filtration rate (GFR), glucose, glucose fasting, lactate dehydrogenase, low density lipoprotein (LDL) Cholesterol, LDL Cholesterol. Number of participants with grade 3 to 4 laboratory test abnormalities were evaluated in this outcome measure. Only rows which included at least 1 participant in any reporting group with grade 3 to 4 abnormality were reported in this outcome measure. As per Common Terminology Criteria for Adverse Events (CTCAE version 5.0) Grade 3= severe and Grade 4= life-threatening or disabling.
Percentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: DBT PhaseDBT: Over 12 weeks of treatmentElevations of AST or alanine aminotransferase (ALT) \> 3 \*upper limit of normal (ULN) concurrent with total bilirubin (TBL) \> 2 \*ULN (elevations on the same laboratory collection date) were included.
Percentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: OLE PhaseOLE: Over 52 weeks of treatmentElevations of AST or ALT \> 3 \* ULN concurrent with TBL \> 2 \*ULN were defined as elevations on the same collection date.
Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseDBT Phase: During 12 weeks of treatmentAn AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment. AEs by intensity: Mild: Transient and may require only minimal treatment or therapeutic intervention. Event did not interfere with activities of daily living. Moderate: Alleviated with additional specific therapeutic intervention. Event interfered with activities of daily living, causing discomfort, but possessed no significant or permanent risk of harm. Severe: Interrupted activities of daily living significantly affected clinical status or required intensive therapeutic intervention.
Number of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: DBT PhaseDBT Phase: During 12 weeks of treatmentAn AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment.
Number of Participants With Hepatic-related AEs by Intensity: OLE PhaseOLE: Over 52 weeks of treatmentAn AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment. AEs by intensity: Mild: Transient and may require only minimal treatment or therapeutic intervention. Event did not interfere with activities of daily living. Moderate: Alleviated with additional specific therapeutic intervention. Event interfered with activities of daily living, causing discomfort, but possessed no significant or permanent risk of harm. Severe: Interrupted activities of daily living significantly affected clinical status or required intensive therapeutic intervention.
Number of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: OLE PhaseOLE: Over 52 weeks of treatmentAn AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment.
Number of Participants With Moderate or Severe AEs: OLE PhaseOLE: During 52 weeks of treatmentAEs: new untoward medical occurrence or worsening of a pre-existing medical condition in participant or clinical investigation participant administered investigational product that does not necessarily have a causal relationship with treatment. AEs included both SAEs and all non-SAEs. Severity: Moderate=Alleviated with additional specific therapeutic intervention, interfered with activities of daily living, causing discomfort, but possessed no significant or permanent risk of harm. Severe= Interrupted activities of daily living significantly affected clinical status or required intensive therapeutic intervention.

Countries

United States

Participant flow

Pre-assignment details

The study enrolled 1753 participants, out of which 1219 were not randomized. Only 534 participants were randomized in a 12-week double-blind treatment (DBT) phase. A total of 298 eligible participants then entered in a 52-week open-label extension (OLE) phase. Participants had a follow-up of 8 weeks after discontinuation or completion of treatment in DBT (if not entered OLE) or OLE phase.

Participants by arm

ArmCount
Zavegepant 100 mg (DBT)
Participants were randomized to receive Zavegepant 100 milligrams (mg) orally as soft gelatin capsules (25 mg \*4 capsules) daily for 12 weeks in DBT phase.
173
Zavegepant 200 mg (DBT)
Participants were randomized to receive Zavegepant 200 mg orally as soft gelatin capsules (25 mg \*8 capsules) daily for 12 weeks in DBT phase.
175
Placebo (DBT) Matched to Zavegepant 100 mg
Participants were randomized to receive placebo matched to Zavegepant 100 mg daily for 12 weeks in DBT phase.
86
Placebo (DBT) Matched to Zavegepant 200 mg
Participants were randomized to receive placebo matched to Zavegepant 200 mg daily for 12 weeks in DBT phase.
88
Total522

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Period 1: DBT PhaseAdverse Event1534
Period 1: DBT PhaseDeath1000
Period 1: DBT PhaseLost to Follow-up3713
Period 1: DBT PhaseNon-compliance1012
Period 1: DBT PhaseOther0100
Period 1: DBT PhasePregnancy2000
Period 1: DBT PhaseRandomized but not treated5520
Period 1: DBT PhaseStudy terminated by sponsor151659
Period 1: DBT PhaseWithdrawal by Subject61276
Period 2: OLE PhaseAdverse Event3420
Period 2: OLE PhaseFailure to meet continuation criteria0011
Period 2: OLE PhaseLost to Follow-up8434
Period 2: OLE PhaseNon-compliance2201
Period 2: OLE PhaseNot reported0200
Period 2: OLE PhaseOther0200
Period 2: OLE PhasePhysician Decision1100
Period 2: OLE PhasePregnancy0020
Period 2: OLE PhaseStudy terminated by sponsor41371719
Period 2: OLE PhaseWithdrawal by Subject16837
Period 3: Follow-up PhaseLost to Follow-up5901
Period 3: Follow-up PhaseNot reported181514
Period 3: Follow-up PhaseOther0121
Period 3: Follow-up PhaseWithdrawal by Subject7634

Baseline characteristics

CharacteristicZavegepant 100 mg (DBT)Zavegepant 200 mg (DBT)Placebo (DBT) Matched to Zavegepant 100 mgPlacebo (DBT) Matched to Zavegepant 200 mgTotal
Age, Continuous41.7 Years
STANDARD_DEVIATION 12.85
43.2 Years
STANDARD_DEVIATION 13.3
41.7 Years
STANDARD_DEVIATION 13.15
41.5 Years
STANDARD_DEVIATION 13.14
42.2 Years
STANDARD_DEVIATION 13.09
Ethnicity (NIH/OMB)
Hispanic or Latino
48 Participants47 Participants26 Participants27 Participants148 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
125 Participants128 Participants60 Participants61 Participants374 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants1 Participants1 Participants
Race (NIH/OMB)
Asian
4 Participants2 Participants3 Participants5 Participants14 Participants
Race (NIH/OMB)
Black or African American
35 Participants35 Participants16 Participants17 Participants103 Participants
Race (NIH/OMB)
More than one race
4 Participants4 Participants1 Participants0 Participants9 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants2 Participants0 Participants1 Participants3 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants1 Participants1 Participants
Race (NIH/OMB)
White
130 Participants132 Participants66 Participants63 Participants391 Participants
Sex: Female, Male
Female
127 Participants144 Participants72 Participants70 Participants413 Participants
Sex: Female, Male
Male
46 Participants31 Participants14 Participants18 Participants109 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
1 / 1730 / 1750 / 3480 / 860 / 880 / 1740 / 1550 / 1430 / 1540 / 1620 / 470 / 480 / 70
other
Total, other adverse events
14 / 1738 / 17522 / 34813 / 8611 / 8824 / 17412 / 15512 / 1430 / 1540 / 1620 / 470 / 480 / 70
serious
Total, serious adverse events
1 / 1731 / 1752 / 3480 / 861 / 881 / 1741 / 1553 / 1430 / 1541 / 1621 / 470 / 480 / 70

Outcome results

Primary

Mean Change From Observation Phase (OP) in the Number of Migraine Days Per Month Over Entire DBT Phase (Weeks 1 to 12)

A migraine day was defined as any calendar day in which participant experienced a qualified migraine headache (onset, continuation or recurrence of migraine headache). A qualified migraine headache was defined as migraine with or without aura, lasting for greater than or equal to (\>=) 30 minutes, and met at least one of the following criteria (A and/or B): A. \>=2 of the following pain features: a. Unilateral location, b. Pulsating quality (throbbing), c. Moderate or severe pain intensity, d. Aggravation by or causing avoidance of routine physical activity (e.g. walking or climbing stairs) B. \>= 1 of following associated symptoms: a. Nausea and/or vomiting b. Photophobia and phonophobia. The number of migraine days per month were prorated to 28 days and derived as follows: 28\*(total number of migraine days through Month 3\[Weeks 1 to 12\] in on-DBT efficacy analysis period)/ (total number of eDiary efficacy data days through Month 3\[Weeks 1 to 12\] in the on-DBT efficacy analysis period).

Time frame: Observation Phase: 28 days prior to randomization and baseline; Entire DBT Phase: 12 weeks (Week 1 through 12)

Population: Migraine analysis set included participants in the DBT efficacy analysis set with \>= 14 days of e-diary efficacy data in both the observation phase and \>= 1 month (4-week interval) in the DBT phase. DBT efficacy analysis set: participants who were enrolled and randomized only once and took \>=1 dose of DB study drug (zavegepant or placebo). Results were summarized by treatment group and the 2 matching placebo groups were pooled as pre-specified in protocol/ statistical analysis plan (SAP).

ArmMeasureValue (LEAST_SQUARES_MEAN)
Zavegepant 100 mg (DBT)Mean Change From Observation Phase (OP) in the Number of Migraine Days Per Month Over Entire DBT Phase (Weeks 1 to 12)-7.0 Migraine Days per Month
Zavegepant 200 mg (DBT)Mean Change From Observation Phase (OP) in the Number of Migraine Days Per Month Over Entire DBT Phase (Weeks 1 to 12)-6.3 Migraine Days per Month
Placebo Pooled (DBT)Mean Change From Observation Phase (OP) in the Number of Migraine Days Per Month Over Entire DBT Phase (Weeks 1 to 12)-5.6 Migraine Days per Month
97.5% CI: [-2.72, -0.12]
97.5% CI: [-2.07, 0.69]
Secondary

Mean Change From Baseline in the Migraine Disability Assessment (MIDAS) Total Score at Week 12

MIDAS is a retrospective, participant-reported, 5-item questionnaire that measured headache related disability as lost days due to headache from paid work or school, household work and non-work activities over past 3-months. The total score is calculated as the sum of item scores to all 5 questions on a scale of 0 (no disability) to 90 (maximum disability) resulting into overall possible MIDAS total score (range from 0 (no disability) to 450 (maximum disability). Higher scores = more severe disability.

Time frame: DBT Phase: Baseline (before dose on Day 1), Week 12

Population: DBT efficacy analysis set included participants in the full analysis set who were randomized only once and took \>= 1 dose of DB study drug (zavegepant or placebo). Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure. Results were summarized by treatment group and the 2 matching placebo groups were pooled as pre-specified in protocol/ SAP.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Zavegepant 100 mg (DBT)Mean Change From Baseline in the Migraine Disability Assessment (MIDAS) Total Score at Week 12-26.8 Scores on a scale
Zavegepant 200 mg (DBT)Mean Change From Baseline in the Migraine Disability Assessment (MIDAS) Total Score at Week 12-27.1 Scores on a scale
Placebo Pooled (DBT)Mean Change From Baseline in the Migraine Disability Assessment (MIDAS) Total Score at Week 12-17.9 Scores on a scale
97.5% CI: [-18.1, 0.19]
97.5% CI: [-18.95, 0.41]
Secondary

Mean Change From Baseline in the Migraine-specific Quality of Life Questionnaire (MSQ) v 2.1 Restrictive Role Function Domain Score at Week 12

MSQ v 2.1 is 14-item questionnaire that assessed impact of treatment on participant-reported quality of life across 3 domains: role function-restrictive, preventive, and emotional function. Restrictive role function domain consists of 7 items that describe how migraine limits one's daily social, work-related activities. Participants respond to items using a 6-point scale ranging from 1 (none of the time) to 6 (all of the time), which are assigned scores of 1 to 6, respectively. Response from each item of restrictive role function domain were added providing a possible raw score range of 7 (no impairment) to 42 (maximum impairment). Raw score range of restrictive role function domain was then transformed to a 0 (no impairment) to 100 (maximum impairment), higher scores = higher impairment.

Time frame: DBT Phase: Baseline (before dose on Day 1), Week 12

Population: DBT efficacy analysis set included participants in the full analysis set who were randomized only once and took \>= 1 dose of DB study drug (zavegepant or placebo). Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure. Results were summarized by treatment group and the 2 matching placebo groups were pooled as pre-specified in protocol/ SAP.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Zavegepant 100 mg (DBT)Mean Change From Baseline in the Migraine-specific Quality of Life Questionnaire (MSQ) v 2.1 Restrictive Role Function Domain Score at Week 1224.5 Scores on a scale
Zavegepant 200 mg (DBT)Mean Change From Baseline in the Migraine-specific Quality of Life Questionnaire (MSQ) v 2.1 Restrictive Role Function Domain Score at Week 1220.6 Scores on a scale
Placebo Pooled (DBT)Mean Change From Baseline in the Migraine-specific Quality of Life Questionnaire (MSQ) v 2.1 Restrictive Role Function Domain Score at Week 1220.5 Scores on a scale
97.5% CI: [-1.5, 9.39]
97.5% CI: [-5.66, 5.86]
Secondary

Mean Change From Observation Phase in the Number of Migraine Days Per Month in the First 4 Weeks (Weeks 1 to 4) of DBT Phase

A migraine day was defined as any calendar day in which participant experienced a qualified migraine headache (onset, continuation or recurrence of the migraine headache). A qualified migraine headache was defined as a migraine with or without aura, lasting for greater than or equal to (\>=) 30 minutes, and met at least one of the following criteria (A and/or B): A. \>=2 of the following pain features: a. Unilateral location, b. Pulsating quality (throbbing), c. Moderate or severe pain intensity, d. Aggravation by or causing avoidance of routine physical activity (e.g. walking or climbing stairs) B. \>= 1 of the following associated symptoms: a. Nausea and/or vomiting b. Photophobia and phonophobia. The number of migraine days per month were prorated to 28 days and derived for month (i.e., 4-week interval) in the on-DBT efficacy analysis period as follows: 28\* (total number of migraine days in the month\[Week 1 to 4\])/ (total number of eDiary efficacy data days in the month\[Week 1 to 4\]).

Time frame: Observation Phase: 28 days prior to randomization and baseline; DBT Phase: first 4 weeks (Week 1 through 4)

Population: Migraine analysis set analyzed. Results were summarized by treatment group and the 2 matching placebo groups were pooled as pre-specified in protocol/ SAP. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Zavegepant 100 mg (DBT)Mean Change From Observation Phase in the Number of Migraine Days Per Month in the First 4 Weeks (Weeks 1 to 4) of DBT Phase-5.7 Migraine Days per Month
Zavegepant 200 mg (DBT)Mean Change From Observation Phase in the Number of Migraine Days Per Month in the First 4 Weeks (Weeks 1 to 4) of DBT Phase-5.1 Migraine Days per Month
Placebo Pooled (DBT)Mean Change From Observation Phase in the Number of Migraine Days Per Month in the First 4 Weeks (Weeks 1 to 4) of DBT Phase-3.9 Migraine Days per Month
97.5% CI: [-3.16, -0.42]
97.5% CI: [-2.53, 0.22]
Secondary

Mean Change From Observation Phase in the Number of Migraine Days Per Month in the Last 4 Weeks (Weeks 9 to 12) of DBT Phase

A migraine day was defined as any calendar day in which the participant experienced a qualified migraine headache (onset, continuation or recurrence of the migraine headache). A qualified migraine headache was defined as a migraine with or without aura, lasting for greater than or equal to (\>=) 30 minutes, and met at least one of the following criteria (A and/or B): A.\>=2 of the following pain features: a. Unilateral location, b. Pulsating quality (throbbing), c. Moderate or severe pain intensity, d. Aggravation by or causing avoidance of routine physical activity (e.g. walking or climbing stairs) B. \>= 1 of the following associated symptoms: a. Nausea and/or vomiting b. Photophobia and phonophobia. The number of migraine days per month were prorated to 28 days and derived for month (i.e., 4-week interval) in on-DBT efficacy analysis period as follows: 28\* (total number of migraine days in the month\[Week 9 to 12\])/(total number of eDiary efficacy data days in the month\[Week 9 to 12\]).

Time frame: Observation Phase: 28 days prior to randomization and baseline; DBT Phase: last 4 weeks (Week 9 through 12)

Population: Migraine analysis set analyzed. Here, Overall Number of Participants Analyzed signifies number of participants evaluable for this outcome measure. Results were summarized by treatment group and the 2 matching placebo groups were pooled as pre-specified in protocol/ SAP.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Zavegepant 100 mg (DBT)Mean Change From Observation Phase in the Number of Migraine Days Per Month in the Last 4 Weeks (Weeks 9 to 12) of DBT Phase-7.8 Migraine Days per Month
Zavegepant 200 mg (DBT)Mean Change From Observation Phase in the Number of Migraine Days Per Month in the Last 4 Weeks (Weeks 9 to 12) of DBT Phase-7.2 Migraine Days per Month
Placebo Pooled (DBT)Mean Change From Observation Phase in the Number of Migraine Days Per Month in the Last 4 Weeks (Weeks 9 to 12) of DBT Phase-6.8 Migraine Days per Month
97.5% CI: [-2.68, 0.58]
97.5% CI: [-2.1, 1.31]
Secondary

Mean Number of Acute Migraine -Specific Medication Days Per Month Over Entire DBT Phase (Weeks 1 to 12)

Acute migraine (AM)-specific medication day was defined as any calendar day on which the participant took an acute migraine-specific medication during aura or to treat a headache. Acute migraine-specific medications were triptans and ergotamine. The number of acute migraine-specific medication days per month were prorated to 28 days and derived as follows: 28 \* (total number of acute migraine-specific medication days through Month 3 \[Week 1 to 12\] in the on-DBT efficacy analysis period)/ (total number of eDiary efficacy data days through Month 3 \[Week 1 to 12\] in the on-DBT efficacy analysis period).

Time frame: Entire DBT Phase: 12 weeks (Week 1 through 12)

Population: Migraine analysis set included participants in the DBT efficacy analysis set with \>= 14 days of e-diary efficacy data in both the observation phase and \>= 1 month (4-week interval) in the DBT phase. DBT efficacy analysis set: participants who were enrolled and randomized only once and took \>=1 dose of DB study drug (zavegepant or placebo). Results were summarized by treatment group and the 2 matching placebo groups were pooled as pre-specified in protocol/ SAP.

ArmMeasureValue (LEAST_SQUARES_MEAN)
Zavegepant 100 mg (DBT)Mean Number of Acute Migraine -Specific Medication Days Per Month Over Entire DBT Phase (Weeks 1 to 12)2.4 AM-specific Medication Days per Month
Zavegepant 200 mg (DBT)Mean Number of Acute Migraine -Specific Medication Days Per Month Over Entire DBT Phase (Weeks 1 to 12)3.0 AM-specific Medication Days per Month
Placebo Pooled (DBT)Mean Number of Acute Migraine -Specific Medication Days Per Month Over Entire DBT Phase (Weeks 1 to 12)3.2 AM-specific Medication Days per Month
97.5% CI: [-1.59, 0.05]
97.5% CI: [-1.06, 0.74]
Secondary

Number of Participants With AEs Leading to Study Drug Discontinuation: DBT Phase

An AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment.

Time frame: DBT Phase: During 12 weeks of treatment

Population: DBT safety analysis set included the participants in the who were enrolled and who took \>=1 dose of DB study drug (zavegepant or placebo), i.e., non-missing study drug start date.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With AEs Leading to Study Drug Discontinuation: DBT Phase2 Participants
Zavegepant 200 mg (DBT)Number of Participants With AEs Leading to Study Drug Discontinuation: DBT Phase5 Participants
Placebo Pooled (DBT)Number of Participants With AEs Leading to Study Drug Discontinuation: DBT Phase7 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With AEs Leading to Study Drug Discontinuation: DBT Phase3 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With AEs Leading to Study Drug Discontinuation: DBT Phase4 Participants
Placebo Pooled (DBT)Number of Participants With AEs Leading to Study Drug Discontinuation: DBT Phase7 Participants
Secondary

Number of Participants With AEs Leading to Study Drug Discontinuation: OLE Phase

An AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment.

Time frame: OLE: During 52 weeks of treatment

Population: OL safety analysis set included the participants who took \>= 1 dose of OL zavegepant, i.e., nonmissing OL zavegepant start date.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With AEs Leading to Study Drug Discontinuation: OLE Phase2 Participants
Zavegepant 200 mg (DBT)Number of Participants With AEs Leading to Study Drug Discontinuation: OLE Phase4 Participants
Secondary

Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT Phase

Laboratory tests included eosinophils, hemoglobin, leukocytes, lymphocytes, neutrophils, platelets; albumin, alkaline phosphatase, alanine aminotransferase (ALT), aspartate aminotransferase (AST), bicarbonate, bilirubin, calcium, cholesterol, potassium, sodium, triglycerides, uric acid, urinalysis, urine protein, creatine kinase (CK), creatinine, glomerular filtration rate (GFR), glucose, glucose fasting, lactate dehydrogenase, low density lipoprotein (LDL) Cholesterol, LDL Cholesterol. Number of participants with grade 3 to 4 laboratory test abnormalities were evaluated in this outcome measure. Only rows which included at least 1 participant in any reporting group with grade 3 to 4 abnormality were reported in this outcome measure. As per Common Terminology Criteria for Adverse Events (CTCAE version 5.0) Grade 3= severe and Grade 4= life-threatening or disabling.

Time frame: DBT: During 12 weeks of treatment

Population: DBT safety analysis set included the participants in the who were enrolled and who took \>=1 dose of DB study drug (zavegepant or placebo), i.e., non-missing study drug start date. Participants reported under Overall Number of Participants Analyzed contributed data but may not be evaluable for every row and Number Analyzed signifies participants evaluable for the specified rows.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseUrinalysis1 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol7 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseCreatine Kinase5 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseHemoglobin0 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhasePotassium, high0 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseTriglycerides1 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, fasting4 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, not fasting0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhasePotassium, high0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseTriglycerides0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseHemoglobin1 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseCreatine Kinase7 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseUrinalysis0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol6 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, fasting1 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, not fasting3 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, not fasting3 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol13 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseHemoglobin1 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseUrinalysis1 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhasePotassium, high0 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, fasting5 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseCreatine Kinase12 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseTriglycerides1 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseHemoglobin0 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, not fasting0 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseTriglycerides0 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol2 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhasePotassium, high3 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseUrinalysis0 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseCreatine Kinase1 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, fasting1 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhasePotassium, high0 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseHemoglobin0 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseCreatine Kinase0 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol5 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, fasting3 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, not fasting1 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseTriglycerides0 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseUrinalysis0 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, fasting4 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseUrinalysis0 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseTriglycerides0 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol7 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseCreatine Kinase1 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseHemoglobin0 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhasePotassium, high3 Participants
Placebo Pooled (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: DBT PhaseLDL Cholesterol, not fasting1 Participants
Secondary

Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE Phase

Laboratory tests included eosinophils, hemoglobin, leukocytes, lymphocytes, neutrophils, platelets; albumin, alkaline phosphatase, alanine aminotransferase (ALT), aspartate aminotransferase (AST), bicarbonate, bilirubin, calcium, cholesterol, potassium, sodium, triglycerides, uric acid, urinalysis, urine protein, creatine kinase (CK), creatinine, glomerular filtration rate (GFR), glucose, glucose fasting, lactate dehydrogenase, low density lipoprotein (LDL) Cholesterol, LDL Cholesterol. Number of participants with grade 3 to 4 laboratory test abnormalities were evaluated in this outcome measure. Only rows which included at least 1 participant in any reporting group with grade 3 to 4 abnormality were reported in this outcome measure. As per Common Terminology Criteria for Adverse Events (CTCAE version 5.0) Grade 3= severe and Grade 4= life-threatening or disabling.

Time frame: OLE: During 52 weeks of treatment

Population: OL safety analysis set included the participants who took \>= 1 dose of OL zavegepant, i.e., nonmissing OL zavegepant start date. Here, Number Analyzed signifies participants evaluable for the specified rows. Overall Number of Participants Analyzed contributed data to table but may not have evaluable data for every row.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseLDL Cholesterol, fasting4 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseCreatine Kinase10 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseLDL Cholesterol, not fasting1 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseHemoglobin0 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhasePotassium, high0 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseGlucose fasting, low1 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseTriglycerides1 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseAST0 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseTriglycerides, fasting0 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseTriglycerides, not fasting1 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseLDL Cholesterol7 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseUrinalysis1 Participants
Zavegepant 100 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseNeutrophils1 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseUrinalysis0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseHemoglobin1 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseNeutrophils1 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseAST1 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseCreatine Kinase7 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseGlucose fasting, low0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseLDL Cholesterol8 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseLDL Cholesterol, fasting4 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseLDL Cholesterol, not fasting1 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhasePotassium, high2 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseTriglycerides1 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseTriglycerides, not fasting0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Grade 3 to 4 Laboratory Test Abnormalities: OLE PhaseTriglycerides, fasting1 Participants
Secondary

Number of Participants With Hepatic-related AEs by Intensity: DBT Phase

An AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment. AEs by intensity: Mild: Transient and may require only minimal treatment or therapeutic intervention. Event did not interfere with activities of daily living. Moderate: Alleviated with additional specific therapeutic intervention. Event interfered with activities of daily living, causing discomfort, but possessed no significant or permanent risk of harm. Severe: Interrupted activities of daily living significantly affected clinical status or required intensive therapeutic intervention.

Time frame: DBT Phase: During 12 weeks of treatment

Population: DBT safety analysis set included the participants in the who were enrolled and who took \>=1 dose of DB study drug (zavegepant or placebo), i.e., non-missing study drug start date.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseModerate0 Participants
Zavegepant 100 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseMild1 Participants
Zavegepant 100 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseSevere0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseSevere0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseMild0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseModerate0 Participants
Placebo Pooled (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseModerate0 Participants
Placebo Pooled (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseMild1 Participants
Placebo Pooled (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseSevere0 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Hepatic-related AEs by Intensity: DBT PhaseSevere0 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Hepatic-related AEs by Intensity: DBT PhaseModerate1 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Hepatic-related AEs by Intensity: DBT PhaseMild1 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Hepatic-related AEs by Intensity: DBT PhaseModerate0 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Hepatic-related AEs by Intensity: DBT PhaseMild0 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Hepatic-related AEs by Intensity: DBT PhaseSevere0 Participants
Placebo Pooled (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseModerate1 Participants
Placebo Pooled (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseSevere0 Participants
Placebo Pooled (DBT)Number of Participants With Hepatic-related AEs by Intensity: DBT PhaseMild1 Participants
Secondary

Number of Participants With Hepatic-related AEs by Intensity: OLE Phase

An AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment. AEs by intensity: Mild: Transient and may require only minimal treatment or therapeutic intervention. Event did not interfere with activities of daily living. Moderate: Alleviated with additional specific therapeutic intervention. Event interfered with activities of daily living, causing discomfort, but possessed no significant or permanent risk of harm. Severe: Interrupted activities of daily living significantly affected clinical status or required intensive therapeutic intervention.

Time frame: OLE: Over 52 weeks of treatment

Population: OL safety analysis set included the participants who took \>= 1 dose of OL zavegepant, i.e., nonmissing OL zavegepant start date.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: OLE PhaseModerate1 Participants
Zavegepant 100 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: OLE PhaseMild1 Participants
Zavegepant 100 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: OLE PhaseSevere0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: OLE PhaseMild1 Participants
Zavegepant 200 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: OLE PhaseModerate2 Participants
Zavegepant 200 mg (DBT)Number of Participants With Hepatic-related AEs by Intensity: OLE PhaseSevere1 Participants
Secondary

Number of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: DBT Phase

An AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment.

Time frame: DBT Phase: During 12 weeks of treatment

Population: DBT safety analysis set included the participants in the who were enrolled and who took \>=1 dose of DB study drug (zavegepant or placebo), i.e., non-missing study drug start date.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: DBT Phase0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: DBT Phase0 Participants
Placebo Pooled (DBT)Number of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: DBT Phase0 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: DBT Phase0 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: DBT Phase0 Participants
Placebo Pooled (DBT)Number of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: DBT Phase0 Participants
Secondary

Number of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: OLE Phase

An AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a participant or clinical investigation participant administered an investigational (medicinal) product and that does not necessarily have a causal relationship with this treatment.

Time frame: OLE: Over 52 weeks of treatment

Population: OL safety analysis set included the participants who took \>= 1 dose of OL zavegepant, i.e., nonmissing OL zavegepant start date.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: OLE Phase0 Participants
Zavegepant 200 mg (DBT)Number of Participants With Hepatic-related AEs Leading to Study Drug Discontinuation: OLE Phase1 Participants
Secondary

Number of Participants With Moderate or Severe Adverse Events (AEs): DBT Phase

AEs: new untoward medical occurrence or worsening of a pre-existing medical condition in participant or clinical investigation participant administered investigational product that does not necessarily have a causal relationship with treatment. AEs included both SAEs and all non-SAEs. Severity: Moderate=Alleviated with additional specific therapeutic intervention, interfered with activities of daily living, causing discomfort, but possessed no significant or permanent risk of harm. Severe= Interrupted activities of daily living significantly affected clinical status or required intensive therapeutic intervention.

Time frame: DBT Phase: During 12 weeks of treatment

Population: DBT safety analysis set included the participants who were enrolled and took \>= 1 dose of DB study drug (zavegepant or placebo), i.e., non-missing study drug start date.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With Moderate or Severe Adverse Events (AEs): DBT Phase20 Participants
Zavegepant 200 mg (DBT)Number of Participants With Moderate or Severe Adverse Events (AEs): DBT Phase25 Participants
Placebo Pooled (DBT)Number of Participants With Moderate or Severe Adverse Events (AEs): DBT Phase45 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Moderate or Severe Adverse Events (AEs): DBT Phase13 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Moderate or Severe Adverse Events (AEs): DBT Phase9 Participants
Placebo Pooled (DBT)Number of Participants With Moderate or Severe Adverse Events (AEs): DBT Phase22 Participants
Secondary

Number of Participants With Moderate or Severe AEs: OLE Phase

AEs: new untoward medical occurrence or worsening of a pre-existing medical condition in participant or clinical investigation participant administered investigational product that does not necessarily have a causal relationship with treatment. AEs included both SAEs and all non-SAEs. Severity: Moderate=Alleviated with additional specific therapeutic intervention, interfered with activities of daily living, causing discomfort, but possessed no significant or permanent risk of harm. Severe= Interrupted activities of daily living significantly affected clinical status or required intensive therapeutic intervention.

Time frame: OLE: During 52 weeks of treatment

Population: OL safety analysis set included the participants who took \>= 1 dose of OL zavegepant, i.e., nonmissing OL zavegepant start date.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With Moderate or Severe AEs: OLE Phase29 Participants
Zavegepant 200 mg (DBT)Number of Participants With Moderate or Severe AEs: OLE Phase37 Participants
Secondary

Number of Participants With SAEs: OLE Phase

AEs: new untoward medical occurrence or worsening of a pre-existing medical condition in participant or clinical investigation participant administered investigational product that does not necessarily have a causal relationship with treatment. SAE was defined as any event that met any of the following criteria: death; life-threatening; inpatient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect in the offspring of a participant; other important medical events that may not have resulted in death, be life-threatening, or required hospitalization, based upon appropriate medical judgment, they may have jeopardized the participant and may have required medical or surgical intervention.

Time frame: OLE: During 52 weeks of treatment

Population: OL safety analysis set included the participants who took \>= 1 dose of OL zavegepant, i.e., nonmissing OL zavegepant start date.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With SAEs: OLE Phase1 Participants
Zavegepant 200 mg (DBT)Number of Participants With SAEs: OLE Phase3 Participants
Secondary

Number of Participants With Serious Adverse Events (SAEs): DBT Phase

AEs: new untoward medical occurrence or worsening of a pre-existing medical condition in participant or clinical investigation participant administered investigational product that does not necessarily have a causal relationship with treatment. SAE was defined as any event that met any of the following criteria: death; life-threatening; inpatient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect in the offspring of a participant; other important medical events that may not have resulted in death, be life-threatening, or required hospitalization, based upon appropriate medical judgment, they may have jeopardized the participant and may have required medical or surgical intervention.

Time frame: DBT Phase: During 12 weeks of treatment

Population: DBT safety analysis set included the participants who were enrolled and took \>= 1 dose of DB study drug (zavegepant or placebo), i.e., non-missing study drug start date.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Zavegepant 100 mg (DBT)Number of Participants With Serious Adverse Events (SAEs): DBT Phase1 Participants
Zavegepant 200 mg (DBT)Number of Participants With Serious Adverse Events (SAEs): DBT Phase1 Participants
Placebo Pooled (DBT)Number of Participants With Serious Adverse Events (SAEs): DBT Phase2 Participants
Placebo (DBT) Matched to Zavegepant 100 mgNumber of Participants With Serious Adverse Events (SAEs): DBT Phase0 Participants
Placebo (DBT) Matched to Zavegepant 200 mgNumber of Participants With Serious Adverse Events (SAEs): DBT Phase1 Participants
Placebo Pooled (DBT)Number of Participants With Serious Adverse Events (SAEs): DBT Phase1 Participants
Secondary

Percentage of Participants With >= 50 % Reduction in Number of Moderate to Severe Migraine Days Per Month Over Entire DBT Phase (Weeks 1 to 12)

A migraine day was defined as any calendar day in which participant experienced a qualified migraine headache (onset, continuation or recurrence of the migraine headache). A qualified migraine headache was defined as migraine with or without aura, lasting for greater than or equal to (\>=) 30 minutes, and met at least one of following criteria (A and/or B): A. \>=2 of following pain features: a. Unilateral location, b. Pulsating quality (throbbing), c. Moderate or severe pain intensity, d. Aggravation by or causing avoidance of routine physical activity (e.g. walking or climbing stairs) B. \>= 1 of the following associated symptoms: a. Nausea and/or vomiting b. Photophobia and phonophobia. The number of migraine days per month were prorated to 28 days and derived as follows: 28\*(total number of migraine days through Month 3\[Weeks 1 to 12\] in the on-DBT efficacy analysis period)/ (total number of eDiary efficacy data days through Month 3\[Weeks 1 to 12\] in on-DBT efficacy analysis period).

Time frame: Entire DBT Phase: 12 weeks (Week 1 through 12)

Population: Migraine analysis set included participants in the DBT efficacy analysis set with \>= 14 days of e-diary efficacy data in both the observation phase and \>= 1 month (4-week interval) in the DBT phase. DBT efficacy analysis set: participants who were enrolled and randomized only once and took \>=1 dose of DB study drug (zavegepant or placebo). Results were summarized by treatment group and the 2 matching placebo groups were pooled as pre-specified in protocol/ SAP.

ArmMeasureValue (NUMBER)
Zavegepant 100 mg (DBT)Percentage of Participants With >= 50 % Reduction in Number of Moderate to Severe Migraine Days Per Month Over Entire DBT Phase (Weeks 1 to 12)56.1 Percentage of participants
Zavegepant 200 mg (DBT)Percentage of Participants With >= 50 % Reduction in Number of Moderate to Severe Migraine Days Per Month Over Entire DBT Phase (Weeks 1 to 12)46.6 Percentage of participants
Placebo Pooled (DBT)Percentage of Participants With >= 50 % Reduction in Number of Moderate to Severe Migraine Days Per Month Over Entire DBT Phase (Weeks 1 to 12)40.0 Percentage of participants
97.5% CI: [4.4, 28.8]
97.5% CI: [-5.6, 18.9]
Secondary

Percentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: DBT Phase

Elevations of AST or alanine aminotransferase (ALT) \> 3 \*upper limit of normal (ULN) concurrent with total bilirubin (TBL) \> 2 \*ULN (elevations on the same laboratory collection date) were included.

Time frame: DBT: Over 12 weeks of treatment

Population: DBT safety analysis set included the participants in the who were enrolled and who took \>=1 dose of DB study drug (zavegepant or placebo), i.e., non-missing study drug start date.

ArmMeasureValue (NUMBER)
Zavegepant 100 mg (DBT)Percentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: DBT Phase0 Percentage of participants
Zavegepant 200 mg (DBT)Percentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: DBT Phase0 Percentage of participants
Placebo Pooled (DBT)Percentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: DBT Phase0 Percentage of participants
Placebo (DBT) Matched to Zavegepant 100 mgPercentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: DBT Phase0 Percentage of participants
Placebo (DBT) Matched to Zavegepant 200 mgPercentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: DBT Phase0 Percentage of participants
Placebo Pooled (DBT)Percentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: DBT Phase0 Percentage of participants
Secondary

Percentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: OLE Phase

Elevations of AST or ALT \> 3 \* ULN concurrent with TBL \> 2 \*ULN were defined as elevations on the same collection date.

Time frame: OLE: Over 52 weeks of treatment

Population: OL safety analysis set included the participants who took \>= 1 dose of OL zavegepant, i.e., nonmissing OL zavegepant start date.

ArmMeasureValue (NUMBER)
Zavegepant 100 mg (DBT)Percentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: OLE Phase0 Percentage of participants
Zavegepant 200 mg (DBT)Percentage of Participants With AST or ALT Elevations >3 * ULN With Total Bilirubin > 2 * ULN: OLE Phase0 Percentage of participants

Source: ClinicalTrials.gov · Data processed: Aug 28, 2026