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<a href="https://www.fiercebiotech.com/biotech/madrigal-boosts-mash-pipeline-1b-biobucks-license-arrowhead-asset" hreflang="en">Madrigal continues MASH deal spree with $1B biobucks license for Arrowhead asset rejected by J&amp;J</a>

fiercebiotech.com·May 5, 2026

Madrigal Pharmaceuticals has secured a $1 billion licensing deal for Arrowhead Pharmaceuticals' ARO-PNPLA3, an RNA interference therapeutic aimed at treating metabolic dysfunction-associated steatohepatitis (MASH), despite the asset being previously rejected by Johnson & Johnson. This agreement adds to Madrigal's expanding MASH pipeline, which includes recent deals to enhance their offerings in the fatty liver disease space.

Madrigal Pharmaceuticals' strategic acquisition of ARO-PNPLA3 from Arrowhead Pharmaceuticals, despite its earlier rejection by J&J, highlights the company's aggressive pursuit of precision medicine solutions for MASH. This move aligns with Madrigal's ongoing investment in personalized treatment strategies targeting genetic risk factors, emphasizing the potential for significant returns in the metabolic disease market through targeted therapies. For investors and industry professionals, this underscores the importance of precision medicine and genetic targeting in the rapidly evolving biotech landscape.

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