A Study to Learn About Zavegepant as the Acute Treatment of Migraine in Asian Adults

Pain relief was defined as pain intensity being none or mild at the specified time point. Participants recorded their headache pain intensity using 4-point numeric rating scale (0= none, 1= mild, 2= moderate, 3= severe).

Pain relief was defined as pain intensity being none or mild at the specified time point. Participants recorded their headache pain intensity using 4-point numeric rating scale (0= none, 1= mild, 2= moderate, 3= severe).

Pain relief was defined as pain intensity being none or mild at the specified time point. Participants recorded their headache pain intensity using 4-point numeric rating scale (0= none, 1= mild, 2= moderate, 3= severe).

Participants recorded their functional disability level using a 4-point numeric rating scale (0= normal, 1= mildly impaired, 2= severely impaired, 3= required bedrest). In this outcome measure, percentage of participants who had functional disability (mildly impaired, severely impaired, or required bedrest) at the time of dosing and then returned to normal function level at the time of evaluation (i.e., 2 hours post-dose) were reported.

Pain relief was defined as pain intensity being none or mild at the specified time point. Participants recorded their headache pain intensity using 4-point numeric rating scale (0= none, 1= mild, 2= moderate, 3= severe). This outcome of sustained pain relief was defined as pain intensity being mild or none at all time points from 2 to 24 hours post-dose with missing data <=1 time point from 3 to 8 hours post-dose.

Pain relief was defined as pain intensity being none or mild at the specified time point. Participants recorded their headache pain intensity using 4-point numeric rating scale (0= none, 1= mild, 2= moderate, 3= severe). This outcome of sustained pain relief was defined as pain intensity being mild or none at all time points from 2 to 48 hours post-dose with missing data <=1 time point from 3 to 8 hours post-dose.

Participants recorded their functional disability level using a 4-point numeric rating scale (0= normal, 1= mildly impaired, 2= severely impaired, 3= required bedrest). In this outcome measure, percentage of participants who had functional disability (mildly impaired, severely impaired, or required bedrest) at the time of dosing and then returned to normal function level at the time of evaluation (i.e., 30 minutes post-dose) were reported.

Participants recorded their functional disability level using a 4-point numeric rating scale (0= normal, 1= mildly impaired, 2= severely impaired, 3= required bedrest). In this outcome measure, percentage of participants who had functional disability (mildly impaired, severely impaired, or required bedrest) at the time of dosing and then returned to normal function level at the time of evaluation (i.e., 60 minutes post-dose) were reported.

Freedom from phonophobia was defined as phonophobia absent at specified time point for participants with the phonophobia present at the time of dosing. In this outcome measure, percentage of participants who had phonophobia at the time of dosing and then recorded phonophobia absent at the time of evaluation (i.e., 2 hours post-dose) were reported.

Freedom from photophobia was defined as photophobia absent at specified time point for participants with the photophobia present at the time of dosing. In this outcome measure, percentage of participants who had photophobia at the time of dosing and then recorded photophobia absent at the time of evaluation (i.e., 2 hours post-dose) were reported.

Freedom from nausea was defined as nausea absent at specified time point for participants with the nausea present at the time of dosing. In this outcome measure, percentage of participants who had nausea at the time of dosing and then recorded nausea absent at time of evaluation (i.e., 2 hours post-dose) were reported.

Pain freedom was defined as pain intensity being none at the specified time point. Participants recorded their headache pain intensity using 4-point numeric rating scale (0= none, 1= mild, 2= moderate, 3= severe). Sustained pain freedom was defined as pain intensity being none at all time points from 2 to 24 hours post-dose with missing data <=1 time point from 3 to 8 hours post-dose.

Pain freedom was defined as pain intensity being none at the specified time point. Participants recorded their headache pain intensity using 4-point numeric rating scale (0= none, 1= mild, 2= moderate, 3= severe). Sustained pain freedom was defined as pain intensity being none at all time points from 2 to 48 hours post-dose with missing data <=1 time point from 3 to 8 hours post-dose.

Pain relapse was defined as pain intensity of mild, moderate, or severe at any time point after 2 hours to 48 hours post-dose for participants with pain intensity of none at 2 hours post-dose. Participants recorded their headache pain intensity using 4-point numeric rating scale (0= none, 1= mild, 2= moderate, 3= severe).

Participants who did not experience relief (pain intensity of none or mild) of their migraine headache at the end of 2 hours post-dose, or the migraine was relieved at 2 hours post-dose, but then recurred to a moderate or severe pain intensity level, were permitted to use the following rescue medications: aspirin, ibuprofen, naproxen (or any other type of nonsteroidal anti-inflammatory drug), acetaminophen up to 1000 mg/day (this included Excedrin Migraine), antiemetics (for example, metoclopramide or promethazine), or baclofen.

Pain relief was defined as pain intensity being none or mild at the specified time point. Participants recorded their headache pain intensity using 4-point numeric rating scale (0= none, 1= mild, 2= moderate, 3= severe).

Participants recorded their functional disability level using a 4-point numeric rating scale (0= normal, 1= mildly impaired, 2= severely impaired, 3= required bedrest). In this outcome measure, percentage of participants who had functional disability (mildly impaired, severely impaired, or required bedrest) at the time of dosing and then returned to normal function level at the time of evaluation (i.e., 15 minutes post-dose) were reported.

An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Moderate AE: A type of AE that was usually alleviated with additional specific therapeutic intervention. The event interfered with usual activity/activities of daily living (ADL), causing discomfort, but posed no significant or permanent risk of harm to the research participant. Severe AE: A type of AE that interrupted usual ADL, or significantly affected clinical status, or might have required intensive therapeutic intervention.

An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Moderate AE: A type of AE that was usually alleviated with additional specific therapeutic intervention. The event interfered with usual ADL, causing discomfort, but posed no significant or permanent risk of harm to the research participant. Severe AE: A type of AE that interrupted usual ADL, or significantly affected clinical status, or might have required intensive therapeutic intervention.

An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose, met one or more of the following criteria: resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or nonpathogenic, or other situations.

An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose, met one or more of the following criteria: resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or nonpathogenic, or other situations.

An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Local irritation AEs were associated with intranasal administration of study intervention (e.g., dysgeusia, nasal discomfort, oropharyngeal pain, throat irritation, and laryngeal discomfort).

An AE was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Local irritation AEs were associated with intranasal administration of study intervention (e.g., dysgeusia, nasal discomfort, oropharyngeal pain, throat irritation, and laryngeal discomfort).

Hematological test abnormalities included: anemia, eosinophilia, hemoglobin increased, leukocytosis, lymphocyte count decreased, lymphocyte count increased, neutrophils count decreased, platelet count decreased and white blood cell decreased. Only those hematology test categories in which at least one participant in at least one reporting arm experienced a Grade 3 or Grade 4 abnormality were reported in this outcome measure. The hematological test abnormalities grade 3 to 4 were graded according to the common terminology criteria for adverse events (CTCAE) version (v) 5.0.

Clinical chemistry test abnormalities included: alanine aminotransferase increased, alkaline phosphatase increased, aspartate aminotransferase increased, blood bilirubin increased, blood lactate dehydrogenase increased, creatine phosphokinase (CPK) increased, chronic kidney disease, creatinine increased, hypercalcemia, hyperglycemia, hyperkalemia, hypernatremia, hypocalcemia, hypoglycemia, hypokalemia and hyponatremia. Only those clinical chemistry test categories in which at least one participant in at least one reporting arm experienced a Grade 3 or Grade 4 abnormality were reported in this outcome measure. The clinical chemistry test abnormalities grade 3 to 4 were graded according to the CTCAE v 5.0.