A Study to Evaluate the Safety, Tolerability, Efficacy, Pharmacokinetics and Pharmacodynamics of M281 Administered to Adults With Generalized Myasthenia Gravis
A Phase 2, Multicenter, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety, Tolerability, Efficacy, Pharmacokinetics and Pharmacodynamics of M281 Administered to Adults With Generalized Myasthenia Gravis
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Phase 2
Contacts and Locations
Study Locations
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Antwerp, Belgium, 2650
- Momenta Investigational Site
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Bruxelles, Belgium, 1070
- Momenta Investigational Site
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Vlaams Brabant
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Leuven, Vlaams Brabant, Belgium, 3000
- Momenta Investigational Site
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Alberta
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Edmonton, Alberta, Canada, T6G 2G3
- Momenta Investigational Site
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Ontario
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London, Ontario, Canada, N6A 5A5
- Momenta Investigational Site
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Toronto, Ontario, Canada, M5G 2C4
- Momenta Investigational Site
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Quebec
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Quebec City, Quebec, Canada, G1J 1Z4
- Momenta Investigational Site
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Düsseldorf, Germany, 40225
- Momenta Investigational Site
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Gummersbach, Germany, 51643
- Momenta Investigational Site
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Munster, Germany, 48149
- Momenta Investigational Site
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Niedersachsen
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Gottingen, Niedersachsen, Germany, 37075
- Momenta Investigational Site
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Cefalu, Italy, 90015
- Momenta Investigational Site
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Messina, Italy, 98125
- Momenta Investigational Site
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Milano, Italy, 20133
- Momenta Investigational Site
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Krakow, Poland, 31-505
- Momenta Investigational Site
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Lodz, Poland, 90-324
- Momenta Investigational Site
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Warsaw, Poland, 01-684
- Momenta Investigational Site
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Warsaw, Poland, 01-868
- Momenta Investigational Site
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Madrid, Spain, 28007
- Momenta Investigational Site
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Madrid, Spain, 28040
- Momenta Investigational Site
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Sevilla, Spain, 41013
- Momenta Investigational Site
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Valencia, Spain, 46026
- Momenta Investigational Site
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Catalan
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Barcelona, Catalan, Spain, 08035
- Momenta Investigational Site
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Barcelona, Catalan, Spain, 08041
- Momenta Investigational Site
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Cataluna
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Badalona, Cataluna, Spain, 08036
- Momenta Investigational Site
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L'hospitalet De Llobregat, Cataluna, Spain, 08907
- Momenta Investigational Site
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Gipuzkoa
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San Sebastian, Gipuzkoa, Spain, 20014
- Momenta Investigational Site
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Birmingham, United Kingdom, B15 2TH
- Momenta Investigational Site
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Sheffield, United Kingdom, S11 9NE
- Momenta Investigational Site
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Southampton, United Kingdom, SO16 6YD
- Momenta Investigational Site
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Arizona
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Phoenix, Arizona, United States, 85013
- Momenta Investigational Site
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Tucson, Arizona, United States, 85724
- Momenta Investigational Site
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California
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Los Angeles, California, United States, 90048
- Momenta Investigational Site
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Orange, California, United States, 92868
- Momenta Investigational Site
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Stanford, California, United States, 94305
- Momenta Investigational Site
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Colorado
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Aurora, Colorado, United States, 80045
- Momenta Investigational Site
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Connecticut
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New Haven, Connecticut, United States, 06511
- Momenta Investigational Site
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Florida
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Boca Raton, Florida, United States, 33487
- Momenta Investigational Site
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Maitland, Florida, United States, 32751
- Momenta Investigational Site
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Port Charlotte, Florida, United States, 33952
- Momenta Investigational Site
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Saint Petersburg, Florida, United States, 33713
- Momenta Investigational Site
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Georgia
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Augusta, Georgia, United States, 30912
- Momenta Investigational Site
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Idaho
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Meridian, Idaho, United States, 83642
- Momenta Investigational Site
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Illinois
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Lake Barrington, Illinois, United States, 60010
- Momenta Investigational Site
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Kansas
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Fairway, Kansas, United States, 66205
- Momenta Investigational Site
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Massachusetts
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Boston, Massachusetts, United States, 02114
- Momenta Investigational Site
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Boston, Massachusetts, United States, 02115
- Momenta Investigational Site
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Boston, Massachusetts, United States, 02215
- Momenta Investigational Site
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Michigan
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Detroit, Michigan, United States, 48202
- Momenta Investigational Site
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East Lansing, Michigan, United States, 48824
- Momenta Investigational Site
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Missouri
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Columbia, Missouri, United States, 65212
- Momenta Investigational Site
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New Jersey
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New Brunswick, New Jersey, United States, 08550
- Momenta Investigational Site
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New York
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New York, New York, United States, 10021
- Momenta Investigational Site
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North Carolina
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Charlotte, North Carolina, United States, 28207
- Momenta Investigational Site
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Durham, North Carolina, United States, 27710
- Momenta Investigational Site
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Raleigh, North Carolina, United States, 27607
- Momenta Investigational Site
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Ohio
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Cincinnati, Ohio, United States, 45267
- Momenta Investigational Site
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Columbus, Ohio, United States, 43210
- Momenta Investigational Site
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Tennessee
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Cordova, Tennessee, United States, 38106
- Momenta Investigational Site
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Texas
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Austin, Texas, United States, 78756
- Momenta Investigational Site
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Round Rock, Texas, United States, 78681
- Momenta Investigational Site
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Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Participants must be ≥18 years of age with a documented history of Generalized Myasthenia Gravis (gMG) and clinical signs/symptoms of gMG, not pregnant or breastfeeding, and no history of any neurologic disorder other than MG that might interfere with the accuracy of study assessments.
Additional, more specific criteria are defined in the protocol.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
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Experimental: Group 2
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M281 administered as IV infusion
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Experimental: Group 3
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M281 administered as IV infusion
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Experimental: Group 4
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M281 administered as IV infusion
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Experimental: Group 5
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M281 administered as IV infusion
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Placebo Comparator: Group 1
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Placebo administered as intravenous (IV) infusion
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What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Number of Participants With Treatment-emergent Adverse Events (TEAEs) as a Measure of Safety and Tolerability
Time Frame: Up to Day 113
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An adverse event (AE) is any untoward medical event that occurs in a participant administered an investigational product and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product.
TEAE are defined as any AE occurring during or after the initiation of the first infusion of study drug.
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Up to Day 113
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Number of Participants With Treatment-emergent Serious Adverse Events (SAEs)
Time Frame: Up to Day 113
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An AE is any untoward medical event that occurs in a participant administered an investigational product and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product.
TEAEs are defined as any AE occurring during or after the initiation of the first infusion of study drug.
An SAE is defined as any AE occurring at any dose that results in any of the following outcomes: death, life-threatening AE, hospitalization or prolongation of existing hospitalization, a persistent or significant disability/incapacity, or a congenital anomaly/birth defect.
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Up to Day 113
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Number of Participants With Treatment-emergent Adverse Events of Special Interest (AESI)
Time Frame: Up to Day 113
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An AE is any untoward medical event that occurs in a participant administered an investigational product and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product.
TEAEs are defined as any AE occurring during or after the initiation of the first infusion of study drug.
For this study, any common terminology criteria for adverse events (CTCAE) Grade 3 or higher event of severe infection or hypoalbuminemia was considered as AESI.
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Up to Day 113
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Change From Baseline to Day 57 in the Myasthenia Gravis - Activities of Daily Living (MG-ADL) Total Score
Time Frame: Baseline to Day 57
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The MG-ADL was used to assess the participant's MG symptom severity.
It assesses eight functions (talking, chewing, swallowing, breathing, impairment of ability to brush teeth or comb hair, impairment of ability to arise from a chair, double vision, and eyelid droop) which were rated on a 4-point scale: 0 (no impairment) to 3 (severe impairment).
The total score is the sum of the eight function scores and ranges from 0 to 24.
Higher scores indicated greater symptom severity/difficulty in performing daily living activities.
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Baseline to Day 57
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Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Change From Baseline in Total MG-ADL Score as a Function of Total Serum Immunoglobulin G (IgG) at Day 57
Time Frame: Baseline and Day 57
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Estimate of additional change from baseline in MG-ADL total score for every 10 percent (%) additional reduction in IgG based on a linear regression of change from baseline in MG-ADL total score on percent reduction in IgG at Day 57.
The MG-ADL was used to assess the participant's MG symptom severity.
It assesses eight functions (talking, chewing, swallowing, breathing, impairment of ability to brush teeth or comb hair, impairment of ability to arise from a chair, double vision, and eyelid droop) which were rated on a 4-point scale: 0 (no impairment) to 3 (severe impairment).
The total score is the sum of the eight function scores and ranges from 0 to 24.
Higher scores indicated greater symptom severity/difficulty in performing daily living activities.
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Baseline and Day 57
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Change From Baseline in Total MG-ADL Score as a Response to Percent Change in Total Serum IgG, for Participants Positive for Anti-acetylcholine Receptor (Anti-AChR) Antibodies, at Day 57
Time Frame: Baseline and Day 57
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Estimate of additional change from baseline in MG-ADL total score for every 10% additional reduction in IgG based on a linear regression of change from baseline in MG-ADL total score on percent reduction in IgG at Day 57 in anti-AChR positive participants.
The MG-ADL was used to assess participant's MG symptom severity.
It assesses eight functions (talking, chewing, swallowing, breathing, impairment of ability to brush teeth or comb hair, impairment of ability to arise from a chair, double vision, and eyelid droop) which were rated on a 4-point scale: 0 (no impairment) to 3 (severe impairment).
Total score is sum of eight function scores and ranges from 0 to 24.
Higher scores indicated greater symptom severity/difficulty in performing daily living activities.
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Baseline and Day 57
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Change From Baseline in Total Quantitative Myasthenia Gravis (QMG) Score as a Function of Total Serum IgG at Day 57
Time Frame: Baseline and Day 57
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Estimate of additional change from baseline in QMG total score for every 10% additional reduction in IgG based on a linear regression of change from baseline in QMG total score on percent reduction in IgG at Day 57.
The QMG test was used to assess the participant's strength.
The quantitative results of each of the 13 strength components were mapped to a 4-point scale where 0 equals to (=) none, 1= mild, 2= moderate and 3= severe.
The total score is the sum of the 13 scale scores and ranges from 0 to 39. Higher scores indicated more severe impairment.
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Baseline and Day 57
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Change From Baseline in Total QMG Score as a Response to Percent Change in Total Serum IgG, for Participants Positive for Anti-acetylcholine Receptor (Anti-AChR) Antibodies, at Day 57
Time Frame: Baseline and Day 57
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Estimate of additional change from baseline in QMG total score for every 10% additional reduction in IgG based on a linear regression of change from baseline in QMG total score on percent reduction in IgG at Day 57 in anti-AChR positive participants.
The QMG test was used to assess the participant's strength.
The quantitative results of each of the 13 strength components were mapped to a 4-point scale where 0 equals to (=) none, 1= mild, 2= moderate and 3= severe.
The total score is the sum of the 13 scale scores and ranges from 0 to 39. Higher scores indicated more severe impairment.
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Baseline and Day 57
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Number of Participants With a 2-, 3-, 4-, 5-, 6-, 7-, or Greater Than or Equal to (>=) 8-point Improvement in Total MG-ADL Score at Day 57
Time Frame: Day 57
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The MG-ADL was used to assess the participant's MG symptom severity.
It assesses eight functions (talking, chewing, swallowing, breathing, impairment of ability to brush teeth or comb hair, impairment of ability to arise from a chair, double vision, and eyelid droop) which were rated on a 4-point scale: 0 (no impairment) to 3 (severe impairment).
The total score is the sum of the eight function scores and ranges from 0 to 24.
Higher scores indicated greater symptom severity/difficulty in performing daily living activities.
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Day 57
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Change From Baseline in Total QMG Score at Day 57
Time Frame: Baseline and Day 57
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The QMG test was used to assess the participant's strength.
The quantitative results of each of the 13 strength components were mapped to a 4-point scale where 0 equals to (=) none, 1= mild, 2= moderate and 3= severe.
The total score is the sum of the 13 scale scores and ranges from 0 to 39. Higher scores indicated more severe impairment.
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Baseline and Day 57
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Number of Participants With a 3-, 4-, 5-, 6-, 7-, or >= 8-point Improvement in Total QMG Score at Day 57
Time Frame: Day 57
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The QMG test was used to assess the participant's strength.
The quantitative results of each of the 13 strength components were mapped to a 4-point scale where 0 equals to (=) none, 1= mild, 2= moderate and 3= severe.
The total score is the sum of the 13 scale scores and ranges from 0 to 39. Higher scores indicated more severe impairment.
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Day 57
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Change From Baseline in Total Revised Myasthenia Gravis Quality of Life - 15 (MG-QoL-15r) Scale Score at Day 57
Time Frame: Baseline and Day 57
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The MG-QoL15r was used to assess the participant's limitations related to living with MG.
Each of the 15 questions were rated by the participant on a 3-point scale (0= Not at all, 1= somewhat, 2=very much) based on a recall period of "over the past few weeks".
The total score is the sum of the 15 question scores and ranges from 0 to 30.
Higher scores indicated more limitation.
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Baseline and Day 57
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Change From Baseline in Total Serum IgG at Day 57
Time Frame: Baseline and Day 57
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Change from baseline in total serum IgG was reported.
Blood samples were collected for analysis of total serum IgG.
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Baseline and Day 57
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Change From Baseline in Total MG-ADL Score at Day 85 and Day 113
Time Frame: Baseline, Day 85 and Day 113
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The MG-ADL was used to assess the participant's MG symptom severity.
It assesses eight functions (talking, chewing, swallowing, breathing, impairment of ability to brush teeth or comb hair, impairment of ability to arise from a chair, double vision, and eyelid droop) which were rated on a 4-point scale: 0 (no impairment) to 3 (severe impairment).
The total score is the sum of the eight function scores and ranges from 0 to 24.
Higher scores indicated greater symptom severity/difficulty in performing daily living activities.
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Baseline, Day 85 and Day 113
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Change From Baseline in Total QMG Score at Day 85 and Day 113
Time Frame: Baseline, Day 85 and Day 113
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The QMG test was used to assess the participant's strength.
The quantitative results of each of the 13 strength components were mapped to a 4-point scale where 0 equals to (=) none, 1= mild, 2= moderate and 3= severe.
The total score is the sum of the 13 scale scores and ranges from 0 to 39. Higher scores indicated more severe impairment.
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Baseline, Day 85 and Day 113
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Change From Baseline in Total MG-QoL15r Score at Day 85 and Day 113
Time Frame: Baseline, Day 85 and Day 113
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The MG-QoL15r was used to assess the participant's limitations related to living with MG.
Each of the 15 questions were rated by the participant on a 3-point scale (0= Not at all, 1= somewhat, 2=very much) based on a recall period of "over the past few weeks".
The total score is the sum of the 15 question scores and ranges from 0 to 30.
Higher scores indicated more limitation.
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Baseline, Day 85 and Day 113
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Number of Participants With Shift From Baseline in Myasthenia Gravis Foundation of America (MGFA) Classification at Day 57
Time Frame: Baseline and Day 57
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The MGFA was used to assess the participant's MG severity.
MGFA classification identifies the subgroup participants with MG who share distinct clinical features or severity of disease: Class I (ocular MG), classes II, III and IV generalized MG with mild, moderate and severe disease, respectively; Class V MG crisis.
Separate subclasses under classes II, III and IV are designed: "a" if the predominant weakness is affecting limb/axial weakness or both; subclass "b" if the predominant weakness is affecting oropharyngeal or respiratory muscles or both.
In the MGFA classification, lower roman numerals mean less severity.
Changes in MGFA classification (regardless of subclass) are categorized as "Improved" (example, III to II), "Same" (example, II to II), or "Worsened" (example, II to III).
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Baseline and Day 57
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Number of Participants With Shift From Baseline in MGFA Classification to Day 113
Time Frame: Baseline to Day 113
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The MGFA was used to assess the participant's MG severity.
MGFA classification identifies the subgroup participants with MG who share distinct clinical features or severity of disease: Class I (ocular MG), classes II, III and IV generalized MG with mild, moderate and severe disease, respectively; Class V MG crisis.
Separate subclasses under classes II, III and IV are designed: "a" if the predominant weakness is affecting limb/axial weakness or both; subclass "b" if the predominant weakness is affecting oropharyngeal or respiratory muscles or both.
In the MGFA classification, lower roman numerals mean less severity.
Changes in MGFA classification (regardless of subclass) are categorized as "Improved" (example, III to II), "Same" (example, II to II), or "Worsened" (example, II to III).
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Baseline to Day 113
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Change From Baseline in Total Serum IgG at Day 85 and Day 113
Time Frame: Baseline, Day 85 and Day 113
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Change from baseline in total serum IgG at Day 85 and Day 113 was analyzed.
Blood samples were collected for analysis of total serum IgG.
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Baseline, Day 85 and Day 113
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Serum Concentrations of Nipocalimab
Time Frame: Baseline (Pre Infusion and Post Infusion), Day 15 (Pre Infusion), Day 29 (Pre Infusion), Day 43 (Pre Infusion), Day 57 (Pre Infusion and Post Infusion) and Day 85
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Serum concentrations of nipocalimab were reported.
Concentrations below the lowest quantifiable concentration (< LLOQ) that is <0.15 microgram/milliliter (mcg/mL) was treated as zero in calculating the summary statistics.
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Baseline (Pre Infusion and Post Infusion), Day 15 (Pre Infusion), Day 29 (Pre Infusion), Day 43 (Pre Infusion), Day 57 (Pre Infusion and Post Infusion) and Day 85
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Collaborators and Investigators
Sponsor
Sponsor
Investigators
Investigators
- Study Director: Momenta General Queries, Momenta Pharmaceuticals, Inc.
Study record dates
Study Major Dates
Study Start (Actual)
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Actual)
First Posted
Study Record Updates
Last Update Posted (Actual)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Pathologic Processes
- Nervous System Diseases
- Immune System Diseases
- Neoplasms
- Autoimmune Diseases of the Nervous System
- Autoimmune Diseases
- Neoplasms by Site
- Neurologic Manifestations
- Musculoskeletal Diseases
- Muscular Diseases
- Neuromuscular Diseases
- Neurodegenerative Diseases
- Neuromuscular Manifestations
- Nervous System Neoplasms
- Paraneoplastic Syndromes, Nervous System
- Paraneoplastic Syndromes
- Neuromuscular Junction Diseases
- Muscle Weakness
- Myasthenia Gravis
Other Study ID Numbers
Other Study ID Numbers
- MOM-M281-004
- 2018-002247-28 (EudraCT Number)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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