Sk Biopharmaceuticals Co LtdSK Biopharmaceuticals gains exclusive worldwide rights to Biohaven's Kv7 ion channel platform for up to $795M plus royalties.
Biohaven and SK Biopharmaceuticals have announced a global licensing agreement for opakalim, Biohaven's lead epilepsy candidate, in a deal worth up to $795 million plus royalties. Under the agreement, SK Biopharmaceuticals obtains exclusive worldwide rights to Biohaven's Kv7 ion channel platform, while Biohaven receives $400 million in near-term cash, including $350 million at closing and $50 million in 2027. The deal also includes up to $150 million in development and regulatory milestones, with tiered royalties on US net sales ranging from the mid-teens to low twenties. SK Biopharmaceuticals will assume Kv7 program costs, including certain Knopp Biosciences obligations worth up to $245 million plus mid-single-digit royalties. The agreement follows positive proof-of-concept data in epilepsy, where opakalim extended the median time to a second seizure to 141 days versus 47 days on placebo, and 54% of patients in an open-label extension study saw at least a 50% reduction in seizure frequency. Biohaven's CEO stated the deal demonstrates the company's ability to monetize its pipeline through partnerships, providing non-dilutive cash to fund other programs such as BHV-1300 and BHV-1400. The pivotal RISE3 trial results are expected in the second half of 2026.
Sk Biopharmaceuticals Co LtdSK Biopharmaceuticals gains exclusive worldwide rights to Biohaven's Kv7 ion channel platform for up to $795M plus royalties.
Biohaven Ltd.Biohaven licenses opakalim to SK Biopharma for up to $795M, receiving $400M near-term cash plus milestones and royalties.