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Stock impact report

argenx Provides Update on UplighTED Studies of Efgartigimod SC in Thyroid Eye Disease

argenx SE - American Depositary Shares (ARGX) 
Company Research Source: GlobeNewswire
15 December, 2025, 7:00 AM CET Amsterdam, the Netherlands – argenx SE (Euronext & Nasdaq: ARGX), a global immunology company committed to improving the lives of people suffering from severe autoimmune diseases, today announced that the Phase 3 UplighTED studies evaluating efgartigimod subcutaneous (SC) (efgartigimod alfa and hyaluronidase-qvfc) in adults with moderate to severe thyroid eye disease (TED) will be discontinued. The decision is based on the recommendation from an Independent Data Monitoring Committee (IDMC) to stop the trials for futility following its review of data from a pre-specified interim analysis. Importantly, efgartigimod showed a favorable safety and tolerability profile, and no new safety signals were identified. “We are disappointed the studies did not meet our desired outcome and we especially empathize with patients who are living with TED and seeking new therapies for this challenging disease,” said Luc Truyen, M.D., Ph.D., Chief Medical Officer at argen Show less Read more
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