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OpenTrials
Active, Not Recruiting

NCT Number: NCT06149559

A Study of Rozanolixizumab in Pediatric Study Participants With Moderate to Severe Generalized Myasthenia Gravis

The purpose of the study is to assess the safety and tolerability of subcutaneous (sc) administration of rozanolixizumab in pediatric participants aged ≥2 to <18 years with generalized Myasthenia Gravis (gMG).

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Conditions

Generalized Myasthenia Gravis Autoimmune Diseases Autoimmune Diseases of the Nervous System Immune System Diseases Myasthenia Gravis Neoplasms Neoplasms by Site Nervous System Diseases Nervous System Neoplasms Neurodegenerative Diseases Neuromuscular Diseases Neuromuscular Junction Diseases Paraneoplastic Syndromes Paraneoplastic Syndromes, Nervous System

Age range

2 year–17 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2 / Phase 3

Primary location

Mg0006 40290, Bologna, Italy

Loading trial locations.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Study participant must be ≥2 to <18 years of age inclusive, at the time of signing the informed consent/assent according to local regulation
  • Study participant must have a documented diagnosis of generalized Myasthenia Gravis (gMG) at Screening that includes a record confirming the presence of MG specific autoantibodies to acetylcholine receptor (AChR) or muscle-specific kinase (MuSK) prior to Screening
  • Study participant has Myasthenia Gravis Foundation of America (MGFA) Clinical Classification II to IVa at Screening
  • Study participant has received existing conventional treatment(s) for gMG (eg, pyridostigmine, corticosteroids, and/or immune suppressants) prior to Screening
  • Study participant has had an unsatisfactory clinical response or worsening of gMG symptoms and is in need of additional therapy (for example, plasma exchange (PEX) or treatment with intravenous immunoglobulin (IVIg))

Exclusion criteria

  • Study participant with severe weakness affecting oropharyngeal or respiratory muscles, or who has myasthenic crisis or impending crisis at Screening or Baseline
  • Study participant has a known hypersensitivity to any components of the Investigational Medicinal Product (IMP) or other anti-neonatal-Fc receptor (FcRn) medications
  • Study participant with any active or untreated thymoma
  • Study participant has a history of thymectomy within 6 months prior to Screening
  • Study participant has a clinically relevant active infection (eg, sepsis, pneumonia, or abscess) in the opinion of the Investigator, or had a serious infection (resulting in hospitalization or requiring parenteral antibiotic treatment) within 6 weeks prior to the first dose of IMP
  • Study participant has received a live vaccination within 4 weeks prior to Baseline or intends to have a live vaccination during the course of the study

Treatment and study plan

rozanolixizumab

Drug

rozanolixizumab solution for injection

Other names: UCB7665

Primary outcomes

  1. Occurrence of serious Treatment-Emergent Adverse Events (TEAEs) up to the End of Study (EOS) Visit

    Time frame: From Baseline up to the EOS Visit (up to 18 weeks)

    Serious TEAEs are any untoward medical incidence in a subject during administered study treatment, whether or not these events are related to study treatment and additionally are emergent untoward medical occurrence that at any dose:

    • Results in death
    • Is life-threatening
    • Requires in patient hospitalisation or prolongation of existing hospitalisation
    • Results in persistent disability/incapacity
    • Is a congenital anomaly or birth defect
    • Important medical events

  2. Occurrence of TEAEs leading to permanent withdrawal of Investigational Medicinal Product (IMP) up to the EOS Visit

    Time frame: From Baseline up to the EOS Visit (up to 18 weeks)

    An Adverse Event (AE) is any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product, which does not necessarily have 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.

  3. Occurrence of Adverse Event(s) of Special Monitoring (AESM) up to the EOS Visit (up to 18 weeks)

    Time frame: From Baseline up to the EOS Visit (up to 18 weeks)

    AESMs are: Severe and/or serious headache, suspected aseptic meningitis, severe Gastrointestinal (GI) disorders, and opportunistic infection.

Secondary outcomes

  1. Percent change in total Immunoglobulin G (IgG) from Baseline at the end of Week 6

    Time frame: From Baseline to the end of Week 6

    Plasma concentration analyses of total IgG will be done for all study participants on an ongoing basis throughout the study.

  2. Absolute change in total IgG from Baseline at the end of Week 6

    Time frame: From Baseline to the end of Week 6

    Plasma concentration analyses of total IgG will be done for all study participants on an ongoing basis throughout the study.

  3. Percent change from Baseline in myasthenia gravis (MG) autoantibody levels at the end of Week 6

    Time frame: From Baseline to the end of Week 6

    Plasma concentration analyses of MG specific anti-acetylcholine receptor (AChR) or anti-muscle-specific kinase (MuSK) autoantibodies will be done for all study participants on an ongoing basis throughout the study.

  4. Absolute change from Baseline in MG-specific autoantibody levels at the end of Week 6

    Time frame: From Baseline to the end of Week 6

    Plasma concentration analyses of anti-AChR or anti-MuSK autoantibodies will be done for all study participants on an ongoing basis throughout the study.

  5. Change from Baseline in Myasthenia Gravis-Activities of Daily Living (MG-ADL) total score at the end of Week 6

    Time frame: From Baseline to the end of Week 6

    The MG-ADL score is an 8-item patient-reported outcome (PRO) instrument. The MG-ADL targets symptoms and disability across ocular, bulbar, respiratory, and axial symptoms. The item responses are scored from 0 to 3, and the total score of MG-ADL is the sum of the 8 items and ranges from 0 to 24, with a higher score indicating more disability.

  6. Change from Baseline in Quantitative Myasthenia Gravis (QMG) total score at the end of Week 6

    Time frame: From Baseline to the end of Week 6

    QMG score is a standardized and validated quantitative strength scoring system that was developed specifically for MG. The QMG total score is obtained by summing the responses to each individual item (13 items; Responses: None=0, Mild=1, Moderate=2, Severe=3). The score ranges from 0 to 39, with lower scores indicating lower disease activity.

  7. Occurrence of other TEAEs (including headache, nausea, and infusion site reactions) during Treatment Period 1 (TP1) and Observation Period 1 (OP1)

    Time frame: During TP1 and OP1 (up to 14 weeks)

    An Adverse Event (AE) is any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product, which does not necessarily have 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.

  8. Evaluation of local tolerability at each scheduled assessment during TP1

    Time frame: At each scheduled assessment during TP1 (Baseline, week 2, 3, 4, 5, up to 6 weeks)

    Local tolerability will be evaluated at each scheduled assessment for all study participants during TP1.

  9. Plasma concentration of rozanolixizumab at the 6-week treatment cycle

    Time frame: At the 6-week treatment cycle

    Plasma concentration analyses of rozanolixizumab will be done for all study participants on an ongoing basis throughout the study.

  10. Incidence of antidrug antibodies (ADAs) at the end of Week 6

    Time frame: At the end of Week 6

    Plasma concentration analyses of ADAs will be done for all study participants on an ongoing basis throughout the study.

Sponsors and collaborators

Lead sponsor

UCB Biopharma SRL

Industry

Registry information

Official study title

An Open-label, Single-arm Study Evaluating the Activity, Safety, and Pharmacokinetics of Rozanolixizumab in Pediatric Study Participants With Moderate to Severe Generalized Myasthenia Gravis

Acronym: roMyG

Important dates

Study start
2024
Primary completion
2026
Study completion
2026
First posted
Nov 29, 2023
Registry last updated
Jul 17, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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