CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 184 enrolled
Drug / intervention
efgartigimod PH20 SCbiological
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04818671
NCT04818671Phase 3Completed

A Long-Term, Single-Arm, Open-label, Multicenter Phase 3 Study to Evaluate the Safety and Tolerability of Multiple Subcutaneous Injections of Efgartigimod PH20 SC in Patients With Generalized Myasthenia Gravis

argenx·interventional·Posted Mar 26, 2021·Updated Jan 22, 2026

In Brief

A Phase 3 clinical trial evaluating efgartigimod PH20 SC for Generalized Myasthenia Gravis. Completed, enrolled 184 participants across 47 sites in 12 countries.

Detailed Summary

The purpose of this study is to evaluate the long-term safety and tolerability of efgartigimod PH20 SC 1000 mg, and the clinical efficacy, PD, pharmacokinetics (PK), immunogenicity, impact on the quality of life (QoL) of the participants, treatment satisfaction, and administration method preference, and the feasibility of self- and caregiver-supported administration of the SC injection. Treatment duration: 3-week treatment periods, repeated as needed with at least 28 days in between treatment periods Health measurements: total levels of immunoglobulin G (IgG), Acetylcholine receptor binding autoantibodies (AChR-Ab) levels, Myasthenia Gravis Activities of Daly Living (MG-ADL).

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesBelgium, Czechia, Georgia, Germany, Hungary, Italy, Japan, Netherlands, Poland, Russia, Spain, United States
Collaborators--

Timeline

Phase 3CompletedFinished
20222023202420252026
First PostedMar 26, 2021
Enrollment StartApr 26, 2021
Primary CompletionDec 31, 2024
TodayJul 2, 2026
Enrollment to primary: 3.7 yearsPosted 5.3 years ago

Interventions

efgartigimod PH20 SCbiological

Subcutaneous injection with efgartigimod PH20 SC