Question · Q4 2025
James Gordon inquired about the efficacy bar for the Phase 3 myositis trial (Q3 readout), specifically if the goal is to exceed competitors like Janssen's VELA trial or achieve similar efficacy with better tolerability. He also sought clarification on the 2026 OpEx guidance, assuming a similar growth pace as 2025 but with more R&D investment.
Answer
Karen Massey, Chief Operating Officer, stated that for myositis, argenx is looking for a statistically significant benefit, emphasizing the high unmet need in IMNM where any benefit is clinically meaningful. Luc Truyen, Chief Medical Officer, noted that the Phase 3 builds on robust Phase 2 data, and while direct comparisons are difficult, positive data is always beneficial for patients. Karl Gubitz, Chief Financial Officer, confirmed that combined R&D and SG&A expenses are expected to grow at a similar rate as 2025 (around 30% over 2024's $2.7 billion), with the majority of growth allocated to R&D to support the pipeline.
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