An Extension Study Evaluating 6-week Treatment Cycles of Rozanolixizumab in Pediatric Study Participants With Generalized Myasthenia Gravis

August 13, 2026 updated by: UCB Biopharma SRL

An Open-label Extension Study to Evaluate Rozanolixizumab in Pediatric Study Participants With Generalized Myasthenia Gravis

The purpose of the study is to assess the long term safety and tolerability of additional 6-week treatment cycles with rozanolixizumab in pediatric participants with generalized Myasthenia Gravis (gMG) aged ≥2 at the time of the Screening Visit of MG0006.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Enrolling by invitation

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
12

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Italy
      • Bologna, Italy
        • Mg0008 40290
      • Milan, Italy
        • Mg0008 40144
      • Naples, Italy
        • Mg0008 40733
  • Japan
      • Fuchu-shi, Japan
        • Mg0008 20340
      • Sagamihara, Japan
        • Mg0008 20343
      • Ōbu, Japan
        • Mg0008 20339
  • Poland
      • Lodz, Poland
        • Mg0008 40734
      • Warsaw, Poland
        • Mg0008 40155
  • Taiwan
      • Taipei, Taiwan
        • Mg0008 20081
      • Taipei, Taiwan
        • Mg0008 20095
  • Turkey (Türkiye)
      • Yenimahalle, Turkey (Türkiye)
        • Mg0008 40841

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

Study participant must meet one of the following:

  • Study participant completed MG0006 according to the protocol
  • Study participant completed the MG0006 Treatment Period and has a worsening of generalized myasthenia gravis (gMG) symptoms in the Observation Period of MG0006

Exclusion Criteria:

  • Study participant met any mandatory withdrawal or mandatory permanent investigational medicinal product (IMP) discontinuation criteria in MG0006 or permanently discontinued IMP
  • Study participant has a known hypersensitivity to any components of the IMP or other neonatal Fc receptor (FcRn) drugs
  • Study participant has any laboratory abnormality that, in the opinion of the Investigator, is clinically significant, has not resolved at Baseline, and could jeopardize or compromise the study participant's ability to participate in this study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: rozanolixizumab
Study participants will receive pre-defined doses of rozanolixizumab. Each treatment cycle in each Treatment Period (TP) consists of 6 subcutaneous (sc) administrations of rozanolixizumab at 1-week intervals. Each Treatment Period will be initiated upon the discretion of the Investigator based on the medical needs of the study-participant.
Drug: rozanolixizumab
rozanolixizumab solution for injection
Other Names:
  • UCB7665

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
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 52 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
From Baseline up to the EOS Visit (up to 52 weeks)
Occurrence of TEAEs leading to permanent withdrawal of IMP up to the EOS Visit
Time Frame: From Baseline up to the EOS Visit (up to 52 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.
From Baseline up to the EOS Visit (up to 52 weeks)
Occurrence of Adverse Event(s) of Special Monitoring (AESM) up to the EOS Visit
Time Frame: From Baseline up to the EOS Visit (up to 52 weeks)
AESMs are: Severe and/or serious headache, suspected aseptic meningitis, severe Gastrointestinal (GI) disorders, and opportunistic infection.
From Baseline up to the EOS Visit (up to 52 weeks)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Percent change in total Immunoglobulin G (IgG) from Baseline to the end of Week 6 of each Treatment Period (TP)
Time Frame: From Baseline to the end of Week 6 of each TP (up to 52 weeks)
Plasma concentration analyses of total IgG will be done for all study participants on an ongoing basis to the end of Week 6 of each TP.
From Baseline to the end of Week 6 of each TP (up to 52 weeks)
Absolute change in total IgG from Baseline to the end of Week 6 of each TP
Time Frame: From Baseline to the end of Week 6 of each TP (up to 52 weeks)
Plasma concentration analyses of total IgG will be done for all study participants on an ongoing basis to the end of Week 6 of each TP.
From Baseline to the end of Week 6 of each TP (up to 52 weeks)
Change from Baseline in Myasthenia Gravis-Activities of Daily Living (MG ADL) total score at the end of Week 6 of each TP
Time Frame: From Baseline to the end of Week 6 of each TP (up to 52 weeks)
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.
From Baseline to the end of Week 6 of each TP (up to 52 weeks)
Change from Baseline in Quantitative Myasthenia Gravis (QMG) total score at the end of Week 6 of each TP
Time Frame: From Baseline to the end of Week 6 of each TP (up to 52 weeks)
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.
From Baseline to the end of Week 6 of each TP (up to 52 weeks)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
UCB Biopharma SRL

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: UCB Cares, 001 844 599 2273

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 8, 2024

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 17, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 17, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 22, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 1, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 6, 2024

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 14, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 13, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • MG0008
  • U1111-1286-3581 (Other Identifier: WHO universal trial number (UTN))
  • 2022-502075-34 (Registry Identifier: EU CTIS)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Data from this trial may be requested by qualified researchers six months after product approval in the US and/or Europe, or global development is discontinued, and 18 months after trial completion. Investigators may request access to anonymized individual patient-level data and redacted trial documents which may include: analysis-ready datasets, study protocol, annotated case report form, statistical analysis plan, dataset specifications, and clinical study report. Prior to use of the data, proposals need to be approved by an independent review panel at www.Vivli.org and a signed data sharing agreement will need to be executed. All documents are available in English only, for a prespecified time, typically 12 months, on a password protected portal. This plan may change if the risk of re-identifying trial participants is determined to be too high after the trial is completed; in this case and to protect participants, individual patient-level data would not be made available.

IPD Sharing Time Frame

Data from this trial may be requested by qualified researchers six months after product approval in the US and/or Europe or global development is discontinued, and 18 months after trial completion.

IPD Sharing Access Criteria

Qualified researchers may request access to anonymized IPD and redacted study documents which may include: raw datasets, analysis-ready datasets, study protocol, blank case report form, annotated case report form, statistical analysis plan, dataset specifications, and clinical study report. Prior to use of the data, proposals need to be approved by an independent review panel at www.Vivli.org and a signed data sharing agreement will need to be executed.All documents are available in English only, for a pre-specified time, typically 12 months, on a password protected portal.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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