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The Phase 3 futility stop for a key program directly lowers probability-adjusted value of ARGX’s IgG-targeting portfolio and may delay revenue catalysts; historic reactions to trial setbacks see immediate pre-market/overnight downdrafts followed by protracted recovery depending on subsequent data or alternative catalysts.
What happened, with direct paths to the underlying reporting
argenx announced it will discontinue the Phase 3 UNITY study of efgartigimod subcutaneous in Sjögren’s disease after an IDMC recommendation to stop for futility at interim analysis. The decision triggered an ~8.7% pre-market decline to $847.72, underscoring near-term downside risk to ARGX’s valuation and potential delays to its growth narrative.
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