What this phase means
Phase 3: this treatment already looked useful in smaller studies. Now it is tested in a large group, often against standard care or a dummy treatment, to see if it should be approved.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are Rimegepant, or Placebo. The registry lists allocation as randomized. Rimegepant is a calcitonin gene-related peptide (CGRP) receptor antagonist approved for the acute treatment of migraine attacks in adults and for the preventive treatment of episodic migraine in adults when administered every other day.
They plan to enroll about 400 people at 21 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
AN INTERVENTIONAL EFFICACY AND SAFETY, PHASE 3, DOUBLE-BLIND, RANDOMIZED, 2-ARM STUDY TO INVESTIGATE THE PREVENTION OF CHRONIC MIGRAINE WITH RIMEGEPANT COMPARED WITH PLACEBO IN PARTICIPANTS 18 YEARS OF AGE OR OLDER
Interventions: Rimegepant, Placebo
Primary outcome (registry wording): Change From Observation Phase in Monthly Migraine Days (MMDs) Over the Entire Double-Blind Treatment Phase