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The value of priority review vouchers, which drugmakers can use to expedite U.S. FDA review of their products, seems to be dwindling. Kyowa Hakko Kirin and Ultragenyx Pharmaceutical recently sold a priority review voucher for $80.6 million to an undisclosed buyer. That’s half the average value that nine previous vouchers sold for. FDA awards the vouchers to companies that develop a drug for a neglected disease. The partners got it for Crysvita, which FDA approved in April to treat a rare form of rickets.
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