Benzinga·2025-11-21 13:48Core Viewpoint - GSK's subsidiary, Tesaro Inc., has initiated litigation against AnaptysBio, claiming a material breach of their existing license agreement regarding the oncology treatment Jemperli (dostarlimab) [1][2][3] Group 1: Litigation Details - The litigation allows Tesaro to terminate the current license agreement, obtain a perpetual and irrevocable license to dostarlimab, and reduce royalties and milestone payments to AnaptysBio by 50% [3] - AnaptysBio has alleged that Tesaro has not fulfilled certain requirements of the license agreement from March 2014 and intends to revoke Tesaro's license for dostarlimab [4][5] - The original agreement included an upfront license fee of $17 million and milestone payments of $18 million per development program, with additional payments tied to regulatory submissions [5] Group 2: Financial Implications - AnaptysBio anticipates ending 2025 with approximately $300 million in cash and investments, including a potential $75 million milestone from GSK once Jemperli achieves $1 billion in worldwide net sales [8] - AnaptysBio has authorized a stock repurchase plan of up to $100 million [7] Group 3: Product and Market Context - Jemperli is approved in over 35 countries for certain endometrial cancers, which is the most common gynecologic cancer in the U.S. [6] - A clinical trial program is ongoing to evaluate dostarlimab's potential use in additional cancers, including rectal, colon, and head and neck cancers [6]