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argenx Presents New Efgartigimod Data Showing Long-Term Sustained Patient Benefit in Myositis and Sjogren’s Disease at EULAR 2026

$ARGXPress releaseJun 3, 2026, 1:00 AM ETRead the release

argenx presented new long-term data for efgartigimod in myositis and Sjogren’s disease at the EULAR 2026 Congress, showing sustained clinical benefit and consistent safety. In the ALKIVIA+ myositis study, 37.5% of patients on continuous treatment maintained major improvement at 52 weeks, with comparable results for those switching from placebo. In the RHO+ Sjogren’s study, patients switching to biweekly dosing maintained response, with low disease activity scores (median ClinESSDAI 2.5) at week 72.

Key figures

Drug Name
efgartigimod
Phase Of Trial
Phase 2
Myositis mean tis switch
49.62
Sjogrens clinessdai switch
2
Myositis mean tis continuous
52.19
Cross indication patient years
1300
Sjogrens clinessdai continuous
2.5
Cross indication treated patients
834
Myositis patients major improvement switch
33.3%
Myositis patients major improvement continuous
37.5%

AI analysis

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    ARGX: argenx Presents New Efgartigimod Data Showing Long-Term Sustained Patient Benefit in Myositis and Sjogren’s Disease at EULAR 2026 — AI Analysis | Signal8