Assessing Efgartigimod (VYVGART™) Social Media Posts in Generalized Myasthenia Gravis to Understand Patient, Caregiver, and Health Care Professional Sentiments

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INTRODUCTION: Myasthenia gravis (MG) is a chronic autoimmune neuromuscular disorder characterized by fluctuating muscle weakness (ocular, bulbar, limb, and respiratory). Efgartigimod (VYVGART), a first-in-class neonatal Fc receptor antagonist, was approved for treatment of generalized MG (gMG). This study aimed to explore real-world sentiments, wherein in sentiments refer to real-world perceptions expressed by patients, caregivers, and healthcare professionals (HCPs) on VYVGART and VYVGART Hytrulo, through structured social media analysis. METHODS: This social media listening study was designed to collect posts mentioning VYVGART and VYVGART Hytrulo for gMG using predefined keywords from social media platforms across the globe. Organic English-language posts from several platforms, such as Reddit, X (formerly Twitter), Facebook, Forums, Review, and Tumblr etc., were analyzed for the timeframe August 1, 2021 to September 30, 2024. Posts were categorized into themes, namely "brand awareness," "treatment access," "treatment experience," and "treatment support." RESULTS: A total of 1046 posts (USA 9%, Europe 6%, Unknown 85%) contained relevant information; 1015 posts were related to VYVGART and 55 posts were related to VYVGART Hytrulo. Most posts focused on treatment experience (593 posts) and brand awareness (402 posts). Overall sentiments towards VYVGART and VYVGART Hytrulo were positive in 49%, 30%, and 20% of patient, caregiver, and HCP posts, respectively. Patient posts expressed optimism about initiating treatment. There were fewer caregiver and HCP discussions and these were predominantly neutral. CONCLUSION: These findings suggest positive real-world perceptions of VYVGART and VYVGART Hytrulo among patients in improving symptoms and health-related quality of life.

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