A Randomized, Double-Blind, Placebo-Controlled, Cross-Over, Multi-Center Study of Eculizumab in Patients with Generalized Myasthenia Gravis (gMG) Who Have Moderate to Severe Muscle Weakness Despite Treatment with Immunosuppressants. - C08-001
- Conditions
- Generalized Myasthenia Gravis (gMG)MedDRA version: 12.0Level: LLTClassification code 10028417Term: Myasthenia gravis
- Registration Number
- EUCTR2009-014669-13-GB
- Lead Sponsor
- Alexion Pharmaceuticals Inc.
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- ot Recruiting
- Sex
- All
- Target Recruitment
- 24
1. Male or female patient =18 – =80 years old.
2. Generalized MG with prominent clinical symptoms.
3. Diagnosis of MG must be made by the tests described in the protocol (section 8.1).
4. MGFA Clinical Classification Class II, III or IVa.
QMG for Disease Severity total score =12.
6. Minimum score of two (2) in four (4) or more test items in the QMG.
7. Able to give informed consent.
8. Able and willing to comply with study procedures.
9. Sexually active women of childbearing potential must be practicing an effective, reliable and medically acceptable contraceptive regimen during the entire duration of the study and for 5 months after taking the last dose of study drug
10. Patients shall have failed treatment or have not achieved significant clinical benefit with at least two immunomodulators
11. If patients enter the study taking azathioprine (AZA) they must have been on AZA for =12 months and have been on a stable dose for =2 months prior to screening.
12. If patients enter the study taking other immunosuppressive treatments, they must have been on treatment for =6 months and have been on a stable dose for =2
months prior to screening.
13. Patients who enter the study taking oral corticosteroids must have been on a stable dose for =4 weeks (28 days) prior to screening.
14. Patients who enter the study taking a cholinesterase inhibitor must have been on a stable dose for =2 weeks prior to screening.
Are the trial subjects under 18? no
Number of subjects for this age range:
F.1.2 Adults (18-64 years) yes
F.1.2.1 Number of subjects for this age range
F.1.3 Elderly (>=65 years) yes
F.1.3.1 Number of subjects for this age range
1. History of thymoma or other neoplasms of the thymus.
2. History of thymectomy within 12 months prior to screening.
3. MG status which in the opinion of the Investigator is unstable or with fixed weakness (i.e. burned-out”) such that the patient is unlikely to respond to therapy based on the patient’s disease severity, pace of progression and prior MG treatment history.
4. Pregnancy or lactation.
5. Active infections at screening.
6. Current chronic use of plasmapheresis/plasma exchange defined as requiring plasma
exchange on a regular basis for the management of muscle weakness two or more times
in one year, or any plasma exchange within 3 months prior to screening.
7. IVIG treatment within 8 weeks prior to screening.
8. Use of etanercept (TNF inhibitor, Enbrel®) within 2 months prior to screening.
9. Use of rituximab (RITUXAN®) within 6 months prior to screening.
10. Severe weakness predominantly affecting oropharyngeal or respiratory muscles or both
(MGFA Class IVb).
11. Crisis or impending crisis as evidenced by forced vital capacity (FVC) <10mL/Kg or
<35% of predicted value, or bulbar weakness severe enough to compromise airway
protection at screening.
12. Need or use of intubation, with or without mechanical ventilation, except when employed during routine postoperative management at screening (MGFA Clinical Classification V).
13. Weakness only affecting ocular or peri-ocular muscles (MGFA Class I).
14. History of splenectomy.
15. Participation in any other investigational drug trial or exposure to other investigational agent, device, or procedures within 30 days prior to screening.
16. History of meningococcal disease.
17. Known or suspected complement deficiency.
18. Patients who are not vaccinated against N. meningitidis at least 14 days prior to Visit 2.
19. Any medical or psychological condition that, in the opinion of the investigator, could increase the patient’s risk by participating in the study or confound the outcome of the study.
Study & Design
- Study Type
- Interventional clinical trial of medicinal product
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Main Objective: • Treatment-emergent adverse events (TEAEs).<br>• Percentage of patients with a 3-point reduction from baseline in the Quantitative<br>Myasthenia Gravis (QMG) total score for disease severity.;Secondary Objective: Change from baseline in the QMG total score for disease severity;<br>• Change from baseline in the two most affected QMG individual test items;<br>• Change from baseline in the Myasthenia Gravis Foundation of American (MGFA) Post-<br>Intervention Status;<br>• Change from baseline in MG activities of daily living profile (MG-ADL);<br>• Change from baseline in respiratory function tests including spirometry to characterize the degree of involvement of respiratory muscles;<br>• Change from baseline in the Quality of life (QoL) instrument SF-36.;Primary end point(s): 1)Treatment-emergent adverse events <br>2) Percentage of patients with a 3-point reduction from baseline in the Quantitative Myasthenia Gravis (QMG) total score for disease severity<br>
- Secondary Outcome Measures
Name Time Method