Japan's Astellas Pharma buys US biotech Xyphos for $665m

Japan's Astellas Pharma buys US biotech Xyphos for $665m

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Astellas Pharma Inc has bought U.S.-based Xyphos Biosciences Inc to expand its immuno-oncology business, a deal worth up to $665 million including potential development milestones and its second acquisition announced this month.