Abstract
INTRODUCTION: Eculizumab is effective and well tolerated in patients with antiacetylcholine receptor antibody-positive refractory generalized myasthenia gravis (gMG; REGAIN; NCT01997229). We report an interim analysis of an open-label extension of REGAIN, evaluating eculizumab's long-term safety and efficacy.
METHODS: Eculizumab (1,200 mg every 2 weeks for 22.7 months [median]) was administered to 117 patients.
RESULTS: The safety profile of eculizumab was consistent with REGAIN; no cases of meningococcal infection were reported during the interim analysis period. Myasthenia gravis exacerbation rate was reduced by 75% from the year before REGAIN (P < 0.0001). Improvements with eculizumab in activities of daily living, muscle strength, functional ability, and quality of life in REGAIN were maintained through 3 years; 56% of patients achieved minimal manifestations or pharmacological remission. Patients who had received placebo during REGAIN experienced rapid and sustained improvements during open-label eculizumab (P < 0.0001).
DISCUSSION: These findings provide evidence for the long-term safety and sustained efficacy of eculizumab for refractory gMG. Muscle Nerve 2019.
Original language | English |
---|---|
Pages (from-to) | 14-24 |
Number of pages | 11 |
Journal | Muscle and Nerve |
Volume | 60 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jul 2019 |
Keywords
- MG-ADL
- MG-QOL15
- MGC
- QMG
- eculizumab
- myasthenia gravis
- Humans
- Middle Aged
- Male
- Meningococcal Vaccines/therapeutic use
- Angioedema/chemically induced
- Activities of Daily Living
- Adult
- Female
- Muscle Strength
- Aspergillosis/epidemiology
- Antibodies, Monoclonal, Humanized/therapeutic use
- Treatment Outcome
- Myasthenia Gravis/drug therapy
- Injection Site Reaction/epidemiology
- Disease Progression
- Complement Inactivating Agents/therapeutic use
- Heart Diseases/chemically induced
- Meningococcal Infections/epidemiology
- Quality of Life
- Longitudinal Studies