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ARGX Data at AANEM/MGFA Expands VYVGART Use Across MG and CIDP

Sep 29, 2026, 8:05 AM EDT1 sourcesAI-analyzed

Why it may matterVerify against the original reporting

Positive clinical and real-world data expand addressable MG/CIDP populations and support earlier treatment benefits; combined with a feasible IVIg transition, this could drive a short-term stock uptick around conference milestones and data readouts.

AI summary

What happened, with direct paths to the underlying reporting

ARGX presented long-term and real-world data for VYVGART in MG and CIDP at AANEM/MGFA 2026. Highlights include deeper ocular MG response with continued cycles, sustained efficacy in anti-AChR Ab-negative MG through Week 52, and real-world evidence that earlier treatment improves MG-ADL and reduces steroid burden, plus CIDP safety and one-week IVIg transition feasibility.

ADAPT OCULUS shows deeper ocular MG improvement with extra VYVGART cycles.
One-year ADAPT SERON: sustained efficacy in anti-AChR Ab-negative MG.
Real-world data: >1,100 US MG patients benefited from earlier VYVGART use.
CIDP data show long-term safety; 87% switch IVIg to VYVGART Hytrulo by week 12.

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