A Study to Evaluate Rozanolixizumab in Study Participants With Generalized Myasthenia Gravis
An Open-Label Extension Study to Evaluate Rozanolixizumab in Study Participants With Generalized Myasthenia Gravis
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Phase 3
Contacts and Locations
Study Locations
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Edmonton, Canada
- Mg0007 50071
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Montreal, Canada
- Mg0007 50066
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Montreal, Canada
- Mg0007 50124
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Québec, Canada
- Mg0007 50070
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Toronto, Canada
- Mg0007 50069
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Ostrava - Poruba, Czechia
- Mg0007 40125
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Prague, Czechia
- Mg0007 40124
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Aalborg, Denmark
- Mg0007 40128
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Aarhus, Denmark
- Mg0007 40127
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Copenhagen, Denmark
- Mg0007 40126
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Bordeaux, France
- Mg0007 40129
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Limoges, France
- Mg0007 40360
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Nice, France
- Mg0007 40132
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Paris, France
- Mg0007 40133
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Strasbourg, France
- Mg0007 40131
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Tbilisi, Georgia
- Mg0007 20160
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Tbilisi, Georgia
- Mg0007 20161
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Tbilisi, Georgia
- Mg0007 20163
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Tbilisi, Georgia
- Mg0007 20164
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Tbilisi, Georgia
- Mg0007 20165
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Essen, Germany
- Mg0007 40134
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Göttingen, Germany
- Mg0007 40140
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Jena, Germany
- Mg0007 40139
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Leipzig, Germany
- Mg0007 40078
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Münster, Germany
- Mg0007 40177
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Bologna, Italy
- Mg0007 40283
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Milan, Italy
- Mg0007 40144
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Naples, Italy
- Mg0007 40307
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Pavia, Italy
- Mg0007 40146
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Roma, Italy
- Mg0007 40148
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Roma, Italy
- Mg0007 40150
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Bunkyō City, Japan
- Mg0007 20035
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Chiba, Japan
- Mg0007 20068
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Hanamaki-shi, Japan
- Mg0007 20078
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Hiroshima, Japan
- Mg0007 20079
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Kobe, Japan
- Mg0007 20075
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Nagasaki, Japan
- Mg0007 20071
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Sendai, Japan
- Mg0007 20077
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Shinjuku-ku, Japan
- Mg0007 20070
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Shinjuku-ku, Japan
- Mg0007 20076
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Suita, Japan
- Mg0007 20032
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Gdansk, Poland
- Mg0007 40155
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Lodz, Poland
- Mg0007 40154
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Lublin, Poland
- Mg0007 40151
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Poznan, Poland
- Mg0007 40153
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Novosibirsk, Russia
- Mg0007 20169
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Saint Petersburg, Russia
- Mg0007 20001
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Saint Petersburg, Russia
- Mg0007 20028
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Saint Petersburg, Russia
- Mg0007 20055
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Niš, Serbia
- Mg0007 40467
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Barcelona, Spain
- Mg0007 40160
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L'Hospitalet de Llobregat, Spain
- Mg0007 40157
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Murcia, Spain
- Mg0007 40350
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San Sebastián de los Reyes, Spain
- Mg0007 40308
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Taipei, Taiwan
- Mg0007 20081
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Taipei, Taiwan
- Mg0007 20086
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California
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Orange, California, United States, 92868
- Mg0007 50092
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San Francisco, California, United States, 94117
- Mg0007 50099
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Florida
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Miami, Florida, United States, 33136
- Mg0007 50122
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Miami, Florida, United States, 33144
- Mg0007 50120
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Tampa, Florida, United States, 33612
- Mg0007 50073
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Georgia
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Augusta, Georgia, United States, 30912-0004
- Mg0007 50075
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Hawaii
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Honolulu, Hawaii, United States, 96817
- Mg0007 50323
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Indiana
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Indianapolis, Indiana, United States, 46202
- Mg0007 50114
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Kentucky
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Lexington, Kentucky, United States, 40536-0284
- Mg0007 50121
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New York
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New York, New York, United States, 10021
- Mg0007 50077
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North Carolina
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Winston-Salem, North Carolina, United States, 27157
- Mg0007 50090
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Pennsylvania
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Philadelphia, Pennsylvania, United States, 19104
- Mg0007 50096
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Texas
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Houston, Texas, United States, 77030
- Mg0007 50113
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Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
Study participant must meet one of the following:
- completed MG0003 [NCT03971422]
- required rescue therapy during the Observation Period in MG0003 or
- completed at least 6 visits in MG0004 [NCT04124965]
- Body weight ≥35 kg at Baseline (Day 1)
- Study participants may be male or female
Exclusion Criteria:
- Study participant has a known hypersensitivity to any components of the study medication or other anti-neonatal Fc receptor (FcRn) medications
- Study participant with a known tuberculosis (TB) infection, at high risk of acquiring TB infection, or latent tuberculosis infection (LTBI), or current/history of nontuberculous mycobacterial infection (NTMBI)
- Study participant met any mandatory withdrawal or mandatory study drug discontinuation criteria in MG0003, or MG0004, or permanently discontinued study drug in either study
- Study participant intends to have a live vaccination during the course of the study or within 8 weeks following the final dose of rozanolixizumab
- Study participant with severe (defined as Grade 3 on the Myasthenia Gravis-Activities of Daily Living (MG-ADL) scale) weakness affecting oropharyngeal or respiratory muscles, or who has myasthenic crisis or impending crisis
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
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Experimental: Rozanolixizumab dosage regimen 1
Study participants randomized/assigned to dosage regimen 1 will receive assigned dosage of rozanolixizumab for the initial cycle.
The dose regimen may be switched before the start of each subsequent treatment cycle based on investigator discretion.
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Rozanolixizumab will be administered by subcutaneous infusion in dosage regimen 1 or 2.
Other Names:
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Experimental: Rozanolixizumab dosage regimen 2
Study participants randomized/assigned to dosage regimen 2 will receive assigned dosage of rozanolixizumab for the initial cycle.
The dose regimen may be switched before the start of each subsequent treatment cycle based on investigator discretion.
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Rozanolixizumab will be administered by subcutaneous infusion in dosage regimen 1 or 2.
Other Names:
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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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Percentage of Participants With Treatment-emergent Adverse Events (TEAEs)
Time Frame: From Baseline (Day 1) to End of Study (up to 34 months)
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An adverse event (AE) was any untoward medical occurrence in a patient or clinical investigation participant administered a pharmaceutical product, which did not necessarily had a causal relationship with this treatment.
An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product.
TEAE was defined as any event that was not present prior to first dose of investigational medicinal product (IMP), or any unresolved event already present that worsened in intensity following treatment, up to 8 weeks after end of Treatment Period or after last dose of IMP in participants who discontinued study or IMP.
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From Baseline (Day 1) to End of Study (up to 34 months)
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Percentage of Participants With TEAEs Leading to Withdrawal of Investigational Medicinal Product (IMP)
Time Frame: From Baseline (Day 1) to End of Study (up to 34 months)
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An adverse event (AE) was any untoward medical occurrence in a patient or clinical investigation participant administered a pharmaceutical product, which does not necessarily have a causal relationship with this treatment.
AEs leading to permanent withdrawal of study medication.
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From Baseline (Day 1) to End of Study (up to 34 months)
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Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Change From Baseline (Day 1) to Day 43 in Myasthenia Gravis-Activities of Daily Living (MG-ADL) Score Within One Treatment Cycle (Cycle 1, 2, and 3)
Time Frame: From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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The MG-ADL is an 8-item PRO instrument developed on basis of QMG.
The MG-ADL targeted symptoms and disability across ocular, bulbar, respiratory, and axial symptoms.
The total MG-ADL score was obtained by summing responses to each individual item (8 items; Grades: 0, 1, 2, 3), where 0= no symptoms or impaired performance and 3= most severe symptoms or impaired performance.
The total score ranges from 0 to 24, with higher score indicating more disability.
A positive change in score indicates worsening and negative change indicates improvement.
For analyses done by study cycle, Baseline values were last available values prior to or on the same date of first administration of IMP at each cycle (Baseline [Day 1]) value for that cycle.
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From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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Change From Baseline (Day 1) to Day 43 in Quantitative Myasthenia Gravis (QMG) Score Within One Treatment Cycle (Cycle 1, 2, and 3)
Time Frame: From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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The QMG is a validated assessment and the scale tested 13 items, including ocular and facial involvement, swallowing, speech, limb strength, and forced vital capacity.
The total QMG score was obtained by summing the responses to each individual item (13 items; Responses: None=0, Mild=1, Moderate=2, Severe=3) and the score ranges from 0 to 39, with lower scores indicating lower disease activity.
A positive change in the score indicates worsening and a negative change indicates improvement.
For the analyses done by study cycle, Baseline values were the last available values prior to or on the same date (and same time if time was collected for the individual assessment) of first administration of IMP at each cycle (ie, Baseline [Day 1]) value for that cycle.
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From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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Change From Baseline (Day 1) to Day 43 in Myasthenia Gravis-Composite (MG-C) Score Within One Treatment Cycle (Cycle 1, 2, and 3)
Time Frame: From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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MG-C scale consists of 10 items which included ptosis (score range=0 to 3), double vision on lateral gaze left/right/both (score range=0 to 4), eye closure (score range=0 to 2), talking (score range=0 to 6), chewing (score range=0 to 6), swallowing (score range=0 to 6), breathing (score range=0 to 9), neck flexion or extension (score range=0 to 4), shoulder abduction (score range=0 to 5) and hip flexion (score range= 0 to 5), lower scores= lower disease activity.
Total MG-C score obtained by summing responses to each individual item and score ranges from 0 - 50, (lower scores indicating lower disease activity).
Positive change = worsening, and negative change = improvement.
For analyses done by study cycle, Baseline values were last available values prior to or on the same date of first administration of IMP at each cycle (Baseline [Day 1]) value for that cycle.
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From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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Change From Baseline (Day 1) to Day 43 in Myasthenia Gravis (MG) Symptoms Patient Reported Outcome (PRO) 'Muscle Weakness Fatigability' Score Within One Treatment Cycle (Cycle 1, 2, and 3)
Time Frame: From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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The MG symptoms PRO instrument consisted of 42 items across 5 scales: ocular symptoms (1-5); bulbar muscle weakness (6-15); respiratory muscle weakness (16-18); physical fatigue (19-33) and muscle weakness fatigability (34-42).
Study participants had to choose response option that best described severity of ocular, bulbar, and respiratory symptoms over past 7 days using a 4-point Likert scale ("none" to "severe") and frequency of experiencing physical fatigue and muscle weakness fatigability over past 7 days using a 5-point Likert scale (1="none of the time" - 5= "all of the time"), for each item.
Sum of each item score is linearly transformed to have all domain scores ranging from 0 to 100, higher scores indicates more severe symptoms.
For analyses done by study cycle, Baseline values were last available values prior to or on the same date of first administration of IMP at each cycle (Baseline [Day 1]) value for that cycle.
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From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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Change From Baseline (Day 1) to Day 43 in MG Symptoms PRO 'Physical Fatigue' Score Within One Treatment Cycle (Cycle 1, 2, and 3)
Time Frame: From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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The MG symptoms PRO instrument consisted of 42 items across 5 scales: ocular muscle weakness (1-5); bulbar muscle weakness (6-15); respiratory muscle weakness (16-18); physical fatigue (19-33) and muscle weakness fatigability (34-42).
Study participants had to choose response option based on frequency of experiencing physical fatigue (19-33) over past 7 days using a 5-point Likert scale (1="none of time" - 5="all of time") for each item.
Sum of each item score is linearly transformed to have all domain scores ranging from 0 to 100, higher scores indicated severe symptoms.
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From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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Change From Baseline (Day 1) to Day 43 in MG Symptoms PRO 'Bulbar Muscle Weakness' Score Within One Treatment Cycle (Cycle 1, 2, and 3)
Time Frame: From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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The MG symptoms PRO instrument consisted of 42 items across 5 scales: ocular muscle weakness (1-5); bulbar muscle weakness (6-15); respiratory muscle weakness (16-18); physical fatigue (19-33) and muscle weakness fatigability (34-42).
Bulbar symptoms are now recognised as bulbar muscle weakness.
Study participants were asked to choose response option that best described severity of bulbar muscle weakness (6-15) symptoms over past 7 days using a 4-point Likert scale (1="none" to 4="severe") for each item.
Sum of each item score is linearly transformed to have all domain scores ranging from 0 to 100, higher scores indicated severe symptoms.
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From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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MG-ADL Responder Rate (>=2.0-point Improvement From Baseline [Day 1]) Within One Treatment Cycle (Cycle 1, 2, and 3 [Day 43])
Time Frame: Day 43 of Cycle 1, 2, and 3
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The MG-ADL is an 8-item PRO instrument developed on the basis of the Quantitative Myasthenia Gravis (QMG).
The MG-ADL targeted symptoms and disability across ocular, bulbar, respiratory, and axial symptoms.
The total MG-ADL score was obtained by summing the responses to each individual item (8 items; Grades: 0, 1, 2, 3), where 0 represents no symptoms or impaired performance and 3 represents the most severe symptoms or impaired performance.
The total score ranges from 0 to 24, with a higher score indicating more disability.
A MG-ADL responder was defined as achieving at least 2.0-point improvement (decrease) in the MG-ADL score from Baseline.
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Day 43 of Cycle 1, 2, and 3
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Time to MG-ADL Response (>=2.0-point Improvement From Baseline [Day 1]) Within One Treatment Cycle (Cycle 1, 2, and 3)
Time Frame: From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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Time to achieve MG-ADL response, defined as at least 2.0-point improvement from Baseline.
Time to first MG-ADL response (in days) by study cycle was defined as date of first MG-ADL Response within study cycle - date of MG-ADL Baseline within study cycle + 1.
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From Baseline (Day 1) to Day 43 of each cycle (Cycles 1, 2, and 3)
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Time Between Consecutive Treatment Cycles
Time Frame: From end of the 6-week treatment cycle (Day 43) to the next 6-week treatment cycle (Day 1), assessed up to 2.5 years
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Time between consecutive treatment cycles: Study participants were assessed for MG worsening prior to repeated cycles.
In case of symptom worsening (eg, an increase of 2.0 points on MG-ADL or 3.0 points on QMG scale) between assessments, resulted additional treatment, study participants undergone another 6-week treatment cycle followed by an Observation Period, based on Investigator's discretion.
Time between treatment cycles was calculated as: date of first sc infusion in consecutive cycle - date of last sc infusion before new cycle + 1 (or date of censoring - date of last sc infusion before potential new cycle + 1).
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From end of the 6-week treatment cycle (Day 43) to the next 6-week treatment cycle (Day 1), assessed up to 2.5 years
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Collaborators and Investigators
Sponsor
Sponsor
Investigators
Investigators
- Study Director: UCB Cares, 001 844 599 22733 (UCB)
Publications and helpful links
General Publications
- Bril V, Druzdz A, Grosskreutz J, Habib AA, Mantegazza R, Sacconi S, Utsugisawa K, Vu T, Boehnlein M, Grimson F, Houston N, Kerbusch V, Pulido-Valdeolivas I, Tarancon T, Vissing J. Long-term use of rozanolixizumab in generalised myasthenia gravis: final pooled analysis of the phase III MycarinG study and two open-label extensions. Ther Adv Neurol Disord. 2026 Jun 29;19:17562864261458532. doi: 10.1177/17562864261458532. eCollection 2026.
- Bril V, Druzdz A, Grosskreutz J, Habib AA, Kaminski HJ, Mantegazza R, Sacconi S, Utsugisawa K, Vu T, Boehnlein M, Gayfieva M, Greve B, Woltering F, Vissing J; MG0004 study investigators. Safety and efficacy of chronic weekly rozanolixizumab in generalized myasthenia gravis: the randomized open-label extension MG0004 study. J Neurol. 2025 Mar 19;272(4):275. doi: 10.1007/s00415-025-12958-9.
- Bril V, Druzdz A, Grosskreutz J, Habib AA, Mantegazza R, Sacconi S, Utsugisawa K, Vissing J, Vu T, Boehnlein M, Bozorg A, Gayfieva M, Greve B, Woltering F, Kaminski HJ; MG0003 study team. Safety and efficacy of rozanolixizumab in patients with generalised myasthenia gravis (MycarinG): a randomised, double-blind, placebo-controlled, adaptive phase 3 study. Lancet Neurol. 2023 May;22(5):383-394. doi: 10.1016/S1474-4422(23)00077-7.
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
Additional Relevant MeSH Terms
- Nervous System Diseases
- Neoplasms by Site
- Neoplasms
- Neuromuscular Diseases
- Autoimmune Diseases
- Immune System Diseases
- Autoimmune Diseases of the Nervous System
- Neurodegenerative Diseases
- Paraneoplastic Syndromes, Nervous System
- Nervous System Neoplasms
- Paraneoplastic Syndromes
- Neuromuscular Junction Diseases
- Myasthenia Gravis
- Immunosuppressive Agents
- Immunologic Factors
- Physiological Effects of Drugs
- rozanolixizumab
Other Study ID Numbers
Other Study ID Numbers
- MG0007
- 2020-003230-20 (EudraCT Number)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
- CSR
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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