A Safety and Tolerability Study of ARGX-113 in Patients With Myasthenia Gravis Who Have Generalized Muscle Weakness.

Summary

This is a Long-Term, Single-Arm, Open-Label, Multicenter Phase 3 follow-on trial of the ARGX-113-1704 study to evaluate the safety and tolerability of ARGX-113 in patients with gMG. Patients who have completed at least 1 cycle of treatment and at least 1 year of trial ARGX-113-1705 and have started Part B are eligible to enroll in the open-label trial ARGX-113-2002 to receive efgartigimod by SC administration.

Timeline

Start

2019-03-01

Primary completion

2022-06-23

Completion

2022-06-30

Publications

• Howard JF Jr, Bril V, Vu T, Karam C, Peric S, De Bleecker JL, Murai H, Meisel A, Beydoun SR, Pasnoor M, Guglietta A, Van Hoorick B, Steeland S, T'joen C, Utsugisawa K, Verschuuren J, Mantegazza R; ADAPT+ Study Group. Long-term safety, tolerability, and efficacy of efgartigimod (ADAPT+): interim results from a phase 3 open-label extension study in participants with generalized myasthenia gravis. Front Neurol. 2024 Jan 17;14:1284444. doi: 10.3389/fneur.2023.1284444. eCollection 2023.
• Howard JF Jr, Bril V, Vu T, Karam C, Peric S, Margania T, Murai H, Bilinska M, Shakarishvili R, Smilowski M, Guglietta A, Ulrichts P, Vangeneugden T, Utsugisawa K, Verschuuren J, Mantegazza R; ADAPT Investigator Study Group. Safety, efficacy, and tolerability of efgartigimod in patients with generalised myasthenia gravis (ADAPT): a multicentre, randomised, placebo-controlled, phase 3 trial. Lancet Neurol. 2021 Jul;20(7):526-536. doi: 10.1016/S1474-4422(21)00159-9.

Drugs

Indications