DUBLIN – Blueprint Medicines Corp. is banking $775 million, including $675 million up front and another $100 million as an equity investment, from a co-commercialization deal with Roche Holding AG and its Genentech subsidiary involving RET inhibitor pralsetinib. The deal also includes up to $927 million in development, regulatory and commercial milestones, $90 million of which are described as “near-term,” plus tiered royalties on ex-U.S. sales, ranging from the high-teens to mid-twenties.