Study of Oral Atogepant Tablets to Assess Safety and Efficacy in Adult Participants With Migraine

Brief summary (registry, in English)

A migraine attack is a moderate or severe headache that usually occurs on one side of the head and is often accompanied by throbbing, sensitivity to light, sensitivity to sound, nausea, or other symptoms. The main goal of the study is to see if atogepant is effective, safe, and well-tolerated in treating migraine attacks quickly. Atogepant is a medicine currently approved for the preventive treatment of migraine in adults and has been shown to be effective and well tolerated when taken daily to prevent migraine attacks. This study includes double-blind phase means that neither the participants nor the study doctors know who is given which study treatment (atogepant or placebo) followed by an open-label phase meaning that both participants and study doctors know which study treatment is given. All participants will receive atogepant during the open-label part of the study. This study will include 1300 participants aged 18-75 years with a history of migraine at approximately 160 sites across the world. All participants will receive both atogepant and placebo to treat qualifying migraines. At the start of the study, participants will be randomized to 1 of 4 dosing sequences to determine when they will receive atogepant and when they will receive placebo during the study. After treating 4 qualifying migraine attacks, participants will receive open-label atogepant for any additional migraine attacks they have until the end of the study (Week 24). There may be a bigger responsibility for participants in this study than there would be in participants receiving standard of care treatment. participants will attend regular visits during the study at a hospital or clinic, as well as telephone visits, and the effects of treatment will be checked by completion of questionnaires in an electronic diary, medical assessments, blood tests, and checking for side effects.

What you commit to

• Study type: Interventional · Phase 3
• Participants enrolled: 2158
• From 25 Mar 2024 to the primary completion date, 7 Jul 2025
• 143 sites in 15 countries
• Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Who the study is looking for

Age in the registry: 18 years to 75 years · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (143)

Sites in registry order. Pick your city on the disease page to sort them by distance.

Related publications

• The pharmacology of gepants in migraine: A scoping review on mechanisms, clinical applications, and combination strategies.Headache · 2026 · PMID 42265882
• Atogepant for migraine in real-world clinical practice: Insights from a large multicentre study in a treatment-resistant population (GEMA project).Cephalalgia · 2026 · PMID 41920093