Setback for Vyvgart Hytrulo, newly-approved injectable biologic

29 November 2023

Shares of Dutch immunology specialist Argenx (Euronext: ARGX) have dropped around a tenth following negative results from the ADVANCE-SC study.

The company is trialing Vyvgart Hytrulo (efgartigimod alfa and hyaluronidase-qvfc), which was recently approved for generalized myasthenia gravis, as an option for adults with primary immune thrombocytopenia (ITP).

Top-line results now show the study missed its primary efficacy endpoint of a sustained platelet count response in chronic ITP patients.

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