Alexion To Join With AZ Ahead Of US Soliris Biosimilars In 2025

Originator Shifting Patients To Next-Gen Ultomiris

Amgen will be able to launch its US Soliris biosimilar around two years ahead of patent expiry under a settlement agreement. The brand’s manufacturer, Alexion, discussed the threat as AstraZeneca pounced with a $39bn takeover agreement.

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Amgen is aiming to get a slice of the US eculizumab market in 2025 with a biosimilar launch. • Source: Shutterstock

With US biosimilar competition looming for its C5 protein inhibitor blockbuster Soliris (eculizumab) in 2025, Alexion Pharmaceuticals doubled down on plans for up to 90% conversion to next-generation product Ultomiris (ravulizumab) as it was announced that AstraZeneca would acquire the US-based biotech in a cash-and-shares deal valued at $39bn.

Earlier this year, Amgen reached a settlement with Alexion in patent-litigation proceedings over Soliris, picking up the rights to...

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