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Efgartigimod alfa - argenx

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Drug Profile

Efgartigimod alfa - argenx

Alternative Names: ARGX-113; EFG PH20 SC; Efgartigimod - argenx; Efgartigimod alfa-fcab - argenx; efgartigimod PH20; efgartigimod PH20 SC; PH20 SC; VYVDURA; VYVGART; Vyvgart; VYVGART HYTRULO; VYVGART SC

Latest Information Update: 19 Dec 2025

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At a glance

  • Originator arGEN-X
  • Developer argenx; Medison; ZAI Lab
  • Class Anti-inflammatories; Antiarrhythmics; Immunoglobulin Fc fragments; Monoclonal antibodies; Skin disorder therapies; Urologics
  • Mechanism of Action Neonatal Fc receptor antagonists
  • Orphan Drug Status

    Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.

    Yes - Chronic inflammatory demyelinating polyradiculoneuropathy; Myasthenia gravis; Idiopathic thrombocytopenic purpura
  • New Molecular Entity Yes

Highest Development Phases

  • Marketed Chronic inflammatory demyelinating polyradiculoneuropathy; Myasthenia gravis
  • Registered Idiopathic thrombocytopenic purpura
  • Phase III Bullous pemphigoid; Graves ophthalmopathy; Myositis; Pemphigus; Sjogren's syndrome
  • Phase II Lupus nephritis; Renal transplant rejection
  • Preclinical Immune-mediated necrotising myopathy
  • Discontinued Anti-neutrophil cytoplasmic antibody-associated vasculitis; Membranous glomerulonephritis; Postural orthostatic tachycardia syndrome

Most Recent Events

  • 15 Dec 2025 argenx discontinued phase-III clinical trials in Graves ophthalmopathy in Austria, Bulgaria, China, France, Georgia, Germany, Italy, Japan, Latvia, Poland, Spain, United Kingdom, Serbia, Slovenia, Sweden, Switzerland, Turkey and the US due to recommendation from an Independent Data Monitoring Committee (SC) (NCT06307626)
  • 18 Nov 2025 Elektrofi has been acquired by Halozyme Therapeutics
  • 05 Nov 2025 Registered for Chronic inflammatory demyelinating polyradiculoneuropathy in Canada (SC)

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