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A Study to Assess Efficacy and Safety of Adimanebart in Adult and Pediatric Participants With DOK7-,MUSK-, AGRN-, or LRP4- Congenital Myasthenic Syndromes (CMS) (CoMetS)

30. Juli 2026 aktualisiert von: argenx

Phase 3, Multicenter, Randomized, Double-Blinded, Placebo-Controlled Study With an Open-Label Extension to Evaluate the Efficacy and Safety of Intravenous Adimanebart in Adult and Pediatric Participants With DOK7-,MUSK-, AGRN-, or LRP4-CMS

The purpose of this study is to assess efficacy and safety of adimanebart in participants at least 12 years of age with DOK7-, MUSK-, AGRN-, or LRP4- Congenital Myasthenic Syndromes (CMS). The study aims to determine whether adimanebart is safe and can help people with CMS feel better and perform daily activities more easily.

The study includes a double-blinded treatment period (DBTP) and an Open- label extension period (OLE). In the DBTP, all participants will be randomized in a 1:1 ratio to adimanebart or placebo. Participants who complete the DBTP will continue to the OLE.

Additionally, participants who complete part of the active-treatment period of ARGX-119-2302 study are eligible to enroll in the OLE of this study. In the OLE, all participants will receive open-label adimanebart. After final IMP dose, the participants will enter a follow-up period and their health will be monitored.

The total duration of the study is up to approximately 152 weeks (2 years and 11 months).

More information can be found here: clinicaltrials.argenx.com/Comets

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Studientyp

Interventionell

Einschreibung (Geschätzt)

105

Phase

  • Phase 3

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Kind
  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

DBTP:

  • At least 12 years of age.
  • Has a diagnosis of DOK7-, MUSK-, AGRN-, or LRP4-CMS with documented mutations.
  • Participants taking oral beta agonists (eg, albuterol, salbutamol, ephedrine) or other CMS medication must have been receiving the medication for at least 6 months and agree to remain on a same stable dosing regimen of the same medication unless directed to change their CMS medication(s) by their treating physician.

OLE:

  • Completed part of the active-treatment period of ARGX-119-2302.

Exclusion Criteria:

DBTP:

  • Known medical condition that would interfere with an accurate assessment of CMS, confound the results of the study, or put the patient at undue risk, as assessed by the investigator.

OLE:

  • Investigational study drug discontinuation in ARGX-119-2302.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Vervierfachen

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Double-blinded treatment period (DBTP) - Adimanebart IV
Participants randomized to receive Adimanebart IV
Intravenous infusion of Adimanebart
Placebo-Komparator: Double-blinded treatment period (DBTP) - Placebo IV
Participants randomized to receive Placebo IV
Intravenous infusion of Placebo
Experimental: Open-label extension (OLE) - Adimanebart IV
Participants receive Adimanebart IV
Intravenous infusion of Adimanebart

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change from baseline at week 24 in 6MWT distance
Zeitfenster: Up to 24 weeks
The 6-minute walk test (6MWT) measures the distance a participant walks in 6 minutes.
Up to 24 weeks
Incidence of AEs and SAEs
Zeitfenster: up to 104 weeks
AE: adverse event; SAE: serious adverse event
up to 104 weeks

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change from baseline in 6MWT distance over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The 6-minute walk test (6MWT) measures the distance a participant walks in 6 minutes.
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in PROMIS PF-10b T-score over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The PROMIS PF-10b T-score (Patient-Reported Outcomes Measurement Information System Physical Function 10b) is a 10- item, participant-reported short-form questionnaire designed to assess physical function. The questionnaire asks the participant to rate the items on a 5-point Likert scale of 5 (without any difficulty) to 1 (unable to do)
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in QMG key component composite score over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The Quantitative Myasthenia Gravis (QMG) scale is a standardized quantitative scoring system that was developed to assess disease severity based on impairment of body function and structures in patients with MG. Minimum value: 0 (no disease severity); Maximum value: 15 (highest disease severity).
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in 6MWT cadence over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The 6-minute walk test (6MWT) measures the distance a participant walks in 6 minutes. Cadence is the number of steps taken per unit of time (steps/min) and is a measure of functional mobility.
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in the QMG key component raw values and scores over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The Quantitative Myasthenia Gravis (QMG) scale is a standardized quantitative scoring system that was developed to assess disease severity based on impairment of body function and structures in patients with MG. Minimum value: 0 (no disease severity); Maximum value: 15 (highest disease severity).
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in PROMIS PF-WMA-SF T-score over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The PROMIS PF-WMA-SF T-score (Patient-Reported Outcomes Measurement Information System Physical Function With Mobility Aid Short Form) is an 11-item, participant-completed questionnaire that assesses lower and upper extremity function and associated activities of daily living. The questionnaire asks the participant to rate the items on a 5-point scale of 5 (without any difficulty) to 1 (unable to do).
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in Neuro-QoL Short Form-Fatigue T-score over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Neuro-QoL Short Form-Fatigue (Quality of Life in Neurological Disorders Short Form - Fatigue) is a participant-completed short-form questionnaire designed to provide a measurement of fatigue in patients with neurological conditions and the impact of their fatigue on their quality of life and daily activities.
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in FVC over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
FVC: forced vital capacity to assess pulmonary function
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in the Actigraphy measures over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Participants will be asked to wear a wrist-worn actigraphy device to assess physical behaviour and mobility.
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in PGI-C over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The Patient Global Impression of Change (PGI-C) is a patient-reported rating scale to assess the change in symptom severity and functional problems since the first IMP administration. Participants are asked to rate their change in symptom severity and functional problems on a 7- point Likert scale from 1 (much improved) to 7 (much worse).
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in PGI-S over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The Patient Global Impression of Severity (PGI-S) scale is a patient-reported rating scale to assess symptom severity and functional problems. Participants are asked to rate their symptom severity and functional problems on a 7-point Likert scale from 1 (no problems) to 7 (unable to do).
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in CGI-C over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The Clinical Global Impression of Change (CGI-C) scale is a clinician-reported rating scale to assess changes in a participant's symptom severity and functional problems since the first IMP administration. Clinicians are asked to rate the change in the participant's symptom severity and functional problems on a 7-point Likert scale from 1 (much improved) to 7 (much worse)
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in CGI-S over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The Clinical Global Impression of Severity (CGI-S scale) is a clinician-reported rating scale to assess a participant's symptom severity and functional problems. The scale comprises a single item. Based on clinical judgment, clinicians rate the participant's symptom severity and functional problems on a 4-point Likert scale from 0 (no problems) to 4 (unable to do).
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Change from baseline in EQ-5D-5L over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
The participant-completed EQ-5D-5L questionnaire is a standardized test recognized by many health authorities as a generic measure of health status.
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Incidence of AEs and SAEs
Zeitfenster: up to 24 weeks
AE: adverse event; SAE: serious adverse event
up to 24 weeks
Adimanebart serum concentrations over time
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
PK=pharmacokinetic(s)
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Incidence of ADA against adimanebart
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
ADA: Anti-drug antibodies
up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Incidence of NAb against adimanebart
Zeitfenster: up to 24 weeks (DBTP) + up to 104 weeks (OLE)
Nab: neutralizing antibody(ies)
up to 24 weeks (DBTP) + up to 104 weeks (OLE)

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

1. September 2026

Primärer Abschluss (Geschätzt)

1. Oktober 2030

Studienabschluss (Geschätzt)

1. Oktober 2030

Studienanmeldedaten

Zuerst eingereicht

30. Juli 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

30. Juli 2026

Zuerst gepostet (Tatsächlich)

4. August 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

4. August 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

30. Juli 2026

Zuletzt verifiziert

1. Juli 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • ARGX-119-17-CMS-3001
  • 2025-524460-37-00 (Ctis)

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Ja

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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