This is a 128-week open-label study to assess the long-term safety and tolerabilty of the monoclonal antibody erenumab in migraine patients.
This was an open-label, multi-center, single arm study with flexible dosing allowing both dose adjustment and one drug holiday per patient. The study design consisted of 3 parts: * Screening Epoch (0 - 2 weeks): required for all patients to assess initial eligibility. Eligible patients came from study CAMG334ADE01 (NCT03828539). * Open-label Treatment Epoch (128 weeks): Individual patients were treated for 128 weeks. In this open-label treatment phase, the erenumab dose could be adjusted from 70 mg to 140 mg or vice versa at the discretion of the physician at any scheduled study visit. Additionally, a voluntary single treatment interruption ('drug holiday') of up to 24 weeks (approximately six months) could be introduced after at least 12 weeks of treatment in the open-label Treatment Epoch. * Follow-up Epoch (4 weeks): A Follow-Up Visit 4 weeks after the last regular study visit (8 weeks after last investigational medicinal product \[IMP\] application) was required as part of routine safety monitoring.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
PREVENTION
Masking
NONE
Enrollment
701
Erenumab was supplied as a pre-filled pen (auto-injector) for subcutaneous injection.
Exposure Adjusted Incidence Rate of AE During Open-label Treatment Epoch Per 100 Subject Years
This outcome measure was calculated dividing the number of adverse events (AEs) by the total patient exposure time and standardizing it per 100 patient-years. Exact Pearson-Clopper confidence intervals for single proportions were calculated to evaluate the precision of the estimated parameter.
Time frame: Up to 128 weeks
Proportion of Patients Discontinuing Open-label Treatment Epoch Due to AE
Participants discontinuing the Open-label Treatment Epoch due to adverse events (AEs) to evaluate the long-term tolerability of erenumab in patients with episodic migraine or chronic migraine.
Time frame: Up to 128 weeks
Proportion of Patients Discontinuing Open-label Treatment Epoch Due to Non-AE Reasons
Participants discontinuing the Open-label Treatment Epoch due to non-AE reasons to evaluate the long-term tolerability of erenumab in patients with episodic migraine or chronic migraine.
Time frame: Up to 128 weeks
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