Dec 6 (Reuters) - Summit Therapeutics Inc (SMMT.O) said on Tuesday it would license China-based Akeso Inc's (9926.HK) experimental cancer therapy in a deal worth up to $5 billion, sending its shares up 57% in premarket trade.
The deal involves an upfront payment of $500 million to Akeso, which will also be eligible for regulatory and commercial milestone payments of up to $4.5 billion.
Additionally, Akeso will be eligible to receive low double-digit royalties on net sales, Summit said in a statement.
Through the deal, Summit will get the rights to develop and commercialize the drug, ivonescimab, in the United States, Canada, Europe, and Japan, while Akeso will retain the rights for rest of the world, including China.
The company also announced a $500 million rights offering and the issuance of $520 million in promissory notes.