ARGX-118 is designed to bind to an epitope of Galectin-10 that is critical for crystal packing. It not only prevents Galectin-10 crystallization, but also rapidly solubilizes Charcot-Leyden crystals (CLCs).
CLCs are frequently observed in the mucus of patients with eosinophilic respiratory diseases and promote type 2 immunity and mucus plugging. By nebulization of ARGX-118, argenx aims to improve the viscoelasticity of mucus.