NCT05214612|UnknownDMC
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Sponsor study identifier
observational
30
1 country
1
Study Start
January 1, 2022
Actual (reported)Primary Completion
December 31, 2024
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
March 31, 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
This study aims to characterize the clinical features, frequency of different subgroups of MG, and identify predictors of treatment responsiveness among different subgroups of MG. The predictors are including primary outcome (percentage of changes in MG scales at baseline at time of enrollment and after 3 months) and secondary outcome (treatment-related adverse events). Also it aims to determine the frequency of patients with refractory MG. This information will be used to understand the trends and mechanisms of disease relapse, and optimal management strategies.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
March 31, 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
December 31, 2021
Actual (reported)January 1, 2022
Actual (reported)January 28, 2022
Actual (reported)December 31, 2024
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
March 31, 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Change in MG-specific Activities of Daily Living scale (MG-ADL).
The MG Activities of Daily Living (MG- ADL) Scale an easily administered, 8-item questionnaire. Each item is graded on a 4- point symptom severity scale (0 = normal, 3 = most severe), with the total score ranging from 0 to 24. Test items emphasize the functional impact of muscle weakness (eg, the ability to comb one's hair or brush one's teeth instead of hand grip or outstretched arm strength tests) rather than its quantitation. The MG-ADL requires no special equipment or training and can be administered in 10 minutes. The MG-ADL test domains include ocular (2 items), oropharyngeal (3 items), respiratory (1 item), and extremity/limb (2 items).
The changes in points from baseline assessment score to 3 months follow up assessment score
Change in MG quality of life 15 (MG-QOL15).
Everyday clinical use led to the development of an abbreviated 15-item version, the MG-QOL15. These 15 items were derived from the mobility (9 items), symptoms (3 items), general contentment (1 item), and emotional well-being (2 items) domains of the 60-item version. Each of the items/statements (eg, "I have limited my social activity because of my condition") is scored by patients on a 5-point scale ranging from 0 ("not at all") to 4("very much") based on their experience over the previous 4 weeks; the item scores are summed to generate a total score ranging from 0 to 60.
Patients with myasthenia gravis who are receiving medical treatment and treatment of crisis as plasmapheresis
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Patients diagnosed with MG either ocular disease or generalized disease associated with thymoma or not or post-thymectomy, from the outpatient clinics and inpatient wards will be eligible to participate.
Assiut University
Asyut, 71515, Egypt
Gilhus NE. Myasthenia Gravis. N Engl J Med. 2016 Dec 29;375(26):2570-2581. doi: 10.1056/NEJMra1602678. No abstract available.
Sanders DB, Wolfe GI, Benatar M, Evoli A, Gilhus NE, Illa I, Kuntz N, Massey JM, Melms A, Murai H, Nicolle M, Palace J, Richman DP, Verschuuren J, Narayanaswami P. International consensus guidance for management of myasthenia gravis: Executive summary. Neurology. 2016 Jul 26;87(4):419-25. doi: 10.1212/WNL.0000000000002790. Epub 2016 Jun 29.
First Submitted
December 31, 2021
First Posted
January 28, 2022
Study Start
January 1, 2022
Actual (reported)Primary Completion
December 31, 2024
Estimated (date passed)Incidence and Predictors of Early Clinical Relapse Within Six Months After Thymectomy in Patients With Myasthenia Gravis
The changes in points from baseline assessment score to 3 months follow up assessment score
Change in MG manual muscle testing (MG-MMT).
The MG-MMT assesses the strength or function of 30 muscle groups typically affected by MG and includes a total of 18 items, with 12 assessed bilaterally, and 6 assessed as single items (lid closure, cheek puff, tongue protrusion, jaw closure, neck flexion, and neck extension). Each item is scored on a 5- point severity scale, based on the severity of muscle weakness \[0 = no weakness, 1 = weak/mild (25%) impairment, 2 = weak/moderate (50%) impairment, 3 = weak/severe (75%) impairment, 4 = paralyzed/unable to perform\]. Bilateral scores are summed for a total item score, and all item scores are summed for a total MG-MMT score. MG-MMT scores range from 0 to 120; domains include ocular (3 items, including eyelid closure), facial/oropharyngeal (3 items), axial strength (neck flexion/extension; 2 items), and limb strength (10 items).
The changes in points from baseline assessment score to 3 months follow up assessment score
Change in MG composite (MGC) Score.
The MG Composite (MGC) Scale is considered a mixed outcome measure that incorporates both physician-evaluated and patient-reported outcome items. In creating this composite scale, the developers sought to minimize the number of items (and thus administration time), to maximize the sensitivity and clinical relevance of each item, and to weight items (as recommended by the Myasthenia Gravis Foundation of America MGFA task force) commensurate with their impact on functional status, QOL, overall health status, and prognosis.13 The MGC Scale is composed of individual items from outcome measures (including the quantitative myasthenia gravis score (QMG), the MG-ADL, and the MG-MMT). Total score spans from 0 to 50.
The changes in points from baseline assessment score to 3 months follow up assessment score
The proportion of patients with treatment related adverse effects.
At baseline and after 3 months
The proportion of patients reaching minimal manifestations (MM) or better
After 3 months
Contact the study team to confirm eligibility.
Evoli A. Myasthenia gravis: new developments in research and treatment. Curr Opin Neurol. 2017 Oct;30(5):464-470. doi: 10.1097/WCO.0000000000000473.
Gilhus NE, Tzartos S, Evoli A, Palace J, Burns TM, Verschuuren JJGM. Myasthenia gravis. Nat Rev Dis Primers. 2019 May 2;5(1):30. doi: 10.1038/s41572-019-0079-y.
Lascano AM, Lalive PH. Update in immunosuppressive therapy of myasthenia gravis. Autoimmun Rev. 2021 Jan;20(1):102712. doi: 10.1016/j.autrev.2020.102712. Epub 2020 Nov 13.
Suh J, Goldstein JM, Nowak RJ. Clinical characteristics of refractory myasthenia gravis patients. Yale J Biol Med. 2013 Jun 13;86(2):255-60. Print 2013 Jun.
Silvestri NJ, Wolfe GI. Treatment-refractory myasthenia gravis. J Clin Neuromuscul Dis. 2014 Jun;15(4):167-78. doi: 10.1097/CND.0000000000000034.
Anil R, Kumar A, Alaparthi S, Sharma A, Nye JL, Roy B, O'Connor KC, Nowak RJ. Exploring outcomes and characteristics of myasthenia gravis: Rationale, aims and design of registry - The EXPLORE-MG registry. J Neurol Sci. 2020 Jul 15;414:116830. doi: 10.1016/j.jns.2020.116830. Epub 2020 Apr 16.
Jaretzki A 3rd, Barohn RJ, Ernstoff RM, Kaminski HJ, Keesey JC, Penn AS, Sanders DB. Myasthenia gravis: recommendations for clinical research standards. Task Force of the Medical Scientific Advisory Board of the Myasthenia Gravis Foundation of America. Ann Thorac Surg. 2000 Jul;70(1):327-34. doi: 10.1016/s0003-4975(00)01595-2. No abstract available.
This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
March 31, 2025
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Last Updated
July 31, 2024
Record last verified: 2024-07
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