A Continuous Treatment Study of JNS019 (Topiramate) in Migraine Patients
A Continuous Treatment Study of JNS019 (Topiramate) in Migraine Patients
The purpose of this study is to evaluate the safety and efficacy of topiramate in participants with migraine (type of severe headache that occurs periodically and is often associated with nausea, vomiting and constipation or diarrhea) who completed the JNS019-JPN-02 study.
This is an open-label (all people know the identity of the intervention), multicenter (conducted in more than one center), dose-titration (dose escalation/reduction) study of topiramate in participants with migraine. This study is a continuous study for the participants who were enrolled in the JNS019-JPN-02 study. Participants who completed the JNS019-JPN-02 study will receive treatment for 52 weeks starting at Visit 4 of the JNS019-JPN-02 study. The present study will consist of 3 weeks of Transfer period (during this period the dose titration will take place and along with dose titration the new treatment will be initiated at 25 milligram per day [25mg/day]), Continuous treatment period (32 weeks), Exit period (up to 3 weeks) and Follow-up period (4 weeks). Participants in the Continuous treatment period will receive topiramate tablets orally in the dose range of 50 mg/day to 100 mg/day. Dose can be increased or decreased as per Investigator's discretion. The maximum daily dose will be 200 mg/day. Efficacy will be primarily evaluated by change from Baseline in the number of monthly migraine attacks in Continuous treatment period. Participants' safety will be monitored throughout the study.
Inclusion Criteria:
- Participants who completed the JNS019-JPN-02 study or discontinued the study at Week 4 or after in fixed-dose period because of insufficient efficacy
Exclusion Criteria:
Shinjuku-Ku, Japan
Suginami-Ku, Japan