New hope for kids with rare muscle disease: drug trial launches
NCT ID NCT06392386
First seen Jun 25, 2026 · Last updated Sep 15, 2026 · Updated 3 times
Summary
This study tests a drug called efgartigimod in 12 children aged 2 to 18 with generalized myasthenia gravis, a condition that causes muscle weakness. The goal is to find the right dose and see if it is safe. Participants receive injections and are monitored for up to 14 weeks.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- efgartigimod
- What this could lead to
- If successful, this could provide a new treatment option to control symptoms in children with generalized myasthenia gravis.
- What could go wrong
- This is a small, early-phase study with only 12 participants, so results may not apply to all children. The drug may cause side effects or not work as well as hoped.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2/3
Runs two stages together: whether the treatment works, then large-scale confirmation.
- Participants
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About 12 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2024
- Expected to finish
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Sep 2027
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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2 to 17 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * The participant (and/or their legally authorized representative) understands the requirements of the study and is capable of providing written informed consent/assent and complying with protocol requirements * The participant is aged 2 to \<18 years at the time of informed consent/assent * The participant has been diagnosed with generalised Myasthenia Gravis that is supported by a physical examination and confirmed seropositivity for anti-acetylcholine receptor antibodies * The participant has had an unsatisfactory response to immunosuppressants, corticosteroids, or acetylcholinesterase inhibitors but is on stable concomitant MG therapy. If receiving corticosteroids and/or immunosuppressants, must be on a stable dose for ≥1 month before screening * The participant agrees to use birth control consistent with local regulations and people of child-bearing potential must have a negative blood pregnancy test at screening and a negative urine pregnancy test before receiving the study drug Exclusion Criteria: * Is a female adolescent of child-bearing potential who is pregnant and/or lactating or intends to become pregnant during their participation in the study * Has worsening muscle weakness secondary to a concurrent infection or as a result of a medication * Has a documented lack of clinical response to plasma exchange (PLEX) * Received a live or live-attenuated vaccine within \<4 weeks before screening * Received a thymectomy within 3 months before screening or is planning to get a thymectomy during their participation in the study * Has a known autoimmune disease or any medical condition that would interfere with an accurate assessment of clinical symptoms of generalised Myasthenia Gravis or puts the participant at undue risk * History of malignancy, cancer, unless considered cured by adequate treatment with no evidence of recurrence for ≥3 years. Adequately treated participants with the following cancers can be included at any time: Basal cell or squamous cell skin cancer, Carcinoma in situ of the cervix, Carcinoma in situ of the breast, Incidental histological findings of prostate cancer * Clinically significant active infection that is not sufficiently resolved in the investigator's opinion or positive serum test at screening for active infection with any of the following: Hepatitis B virus (HBV), Hepatitis C virus (HCV), HIV * Has a positive PCR test for SARS-CoV-2 at screening * Has/had a clinically significant disease, had recent major surgery (within 3 months of screening) or intends to have major surgery during the study, or has/had any other medical condition that, in the investigator's opinion, would confound the results of the study or put the participant at undue risk * Has received a different study drug in another clinical study within \<12 before screening * Is currently participating in another interventional clinical study * Has previously participated in an efgartigimod clinical study and received at least one dose of study drug * Has a known hypersensitivity to study drug or any of its excipients * Has a history of or current episode of alcohol, drug, or medication abuse as assessed by the investigator * Use of some medications before screening (more information is found in the protocol) The complete list of exclusion criteria can be found in the protocol.
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Get notified about this study
Sign up to get updates when this study changes or when new studies for Generalized myasthenia gravis are added.
Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The study's own enquiry address
This study publishes an address for enquiries. See it below .
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The places running it
21 sites in 14 countries. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Show contact details
Enter your email to view the contact information for this study.
Genom att skicka in godkänner du våra Användarvillkor
Study contacts
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Contact
Email: •••••@•••••
Locations
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AP-HM- Hôpital de La Timone
RECRUITINGMarseille, 13385, France
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Carolinas HealthCare System Neurosciences Institute - Neurology
RECRUITINGCharlotte, North Carolina, 28207, United States
Contact Email: •••••@•••••
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Centralny Szpital Kliniczny - Uniwersyteckie Centrum Kliniczne WUM
RECRUITINGWarsaw, 02-097, Poland
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Childrens Hospital of Eastern Ontario
RECRUITINGOttawa, K1H 8L1, Canada
Contact Email: •••••@•••••
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Fakultni nemocnice Brno
RECRUITINGBrno, 613 00, Czechia
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Fakultni nemocnice Ostrava
RECRUITINGOstrava, 708 00, Czechia
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Hadassah Medical Center- Ein Kerem
RECRUITINGJerusalem, 9112001, Israel
Contact Email: •••••@•••••
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Hospital Universitari i Politecnic La Fe de Valencia
RECRUITINGValencia, 46026, Spain
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Hôpital Nestlé
RECRUITINGLausanne, 1011, Switzerland
Contact Email: •••••@•••••
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Istituto G Gaslini Ospedale Pediatrico IRCCS
RECRUITINGGenova, 16147, Italy
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Leiden University Medical Center
RECRUITINGLeiden, 2333 ZA, Netherlands
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Neurologia Śląska Centrum Medyczne
RECRUITINGKatowice, 40-689, Poland
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Neurology Rare Disease Center
RECRUITINGDenton, Texas, 76208, United States
Contact Email: •••••@•••••
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Oxford Children's Hospital
RECRUITINGOxford, OX3 9DU, United Kingdom
Contact Email: •••••@•••••
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Schneider Children's Medical Center of Israel
RECRUITINGPetah Tikvah, 4920235, Israel
Contact Email: •••••@•••••
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Sydney Children's Hospital
RECRUITINGRandwick, 2031, Australia
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Tel Aviv Sourasky Medical Center Ichilov
RECRUITINGTel Aviv, 6423906, Israel
Contact Email: •••••@•••••
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UZ Gent
RECRUITINGGhent, 9000, Belgium
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University of Virginia
RECRUITINGCharlottesville, Virginia, 22903, United States
Contact Email: •••••@•••••
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Universitätsklinikum Essen
RECRUITINGEssen, 45147, Germany
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Uniwersyteckie Centrum Kliniczne w Gdansku
RECRUITINGGdansk, 80-211, Poland
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a new drug offer Long-Term relief for muscle weakness?
- Can a new drug ease the muscle weakness of myasthenia gravis?
- Engineered immune cells take aim at debilitating muscle weakness
- New hope for myasthenia gravis: experimental drug CNP-106 enters human trials
- New hope for myasthenia gravis patients: experimental drug enters phase 2 trial
- New drug trial aims to ease muscle weakness in rare disease