A migraine attack is a moderate or severe headache that usually occurs on one side of the head and is often throbbing or pulsating. The headache is often accompanied by sensitivity to light, sensitivity to sound, nausea, or other symptoms. Menstrual migraine (MM) attacks are migraine attacks that occur in individuals before or during their menstrual period. The main goals of the study are to evaluate the efficacy (how well the medicine works), safety, and tolerability (the degree to which any adverse symptoms can be handled by the patients during the study) of atogepant, compared to placebo (looks like the study treatment but has no medicine in it), for the prevention of MM.
Atogepant is an investigational drug being developed for the preventive treatment of menstrual migraine. Participants are randomly assigned to one of the 2 treatment groups called Arms to receive atogepant or matching placebo. There is 1 in a 2 chance for the participant to receive placebo. Approximately 430 adult female participants with menstrual migraine will be enrolled in approximately 85 sites across the world.
Participants will receive oral atogepant or matching placebo for 3 menstrual cycles during the double-blind period. During the open-label treatment period, participants will receive atogepant during each menstrual cycle.
There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will attend regular visits during the study at a hospital or clinic. The safety and tolerability of the treatment will be checked by medical assessments, blood tests, checking for adverse events and completing questionnaires.
Who can participate
Age range
18 Years
Sex
FEMALE
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* History and eDiary confirmation have regular menstrual cycles within the range of 21 to 35 days in length (Note: menstrual cycle length is calculated as onset of menses until the day before the next onset of menses).
* History of migraine (with or without aura) according to the International Classification of Headache Disorders, 3rd Edition (ICHD-3) for \>= 12 months prior to Visit 1/Screening.
* Migraine onset before age 50 years.
* By history at Visit 1/Screening, participant meets ICHD-3 criteria for pure menstrual migraine with or without aura, or menstrually-related migraine with or without aura, i.e., in at least 2 out of 3 cycles, experiences migraine attacks starting during the PMP (Day -2 to Day +3 relative to menses onset) in the opinion of the investigator.
* Participant records 3 perimenstrual periods (PMP) in the eDiary during the screening period, and in at least 2 of 3 PMPs the participant experiences and records a migraine attack in the eDiary with at least 1 migraine day.
Exclusion Criteria:
* History of an average of 15 or more headache days per month during the 3 months prior to Visit 1/Screening per the investigator's judgment, or a current diagnosis of chronic migraine as defined by International Classification of Headache Disorders, 3rd Edition (ICHD-3).
* An average of 15 or more headache days per month recorded in the eDiary during the screening period.
* History of migraine with brainstem aura, hemiplegic migraine, or retinal …
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Change in Number of Migraine Days Occurring During the Perimenstrual Period (PMP)