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GSK buys rights to Hansoh Pharma antibody-drug conjugate
(Sharecast News) - GSK has agreed to buy the rights to an antibody-drug conjugate (ADC) - HS-20093 - from Chinese biopharmaceutical group Hansoh Pharma. Under the terms of the deal, GSK will pay $185m upfront and Hansoh will be eligible to receive up to $1.525bn in success-based milestones for HS-20093.
The ADC utilises a clinically-validated topoisomerase inhibitor (TOPOi) payload. Under the agreement, GSK will obtain exclusive worldwide rights excluding China's mainland, Hong Kong, Macau, and Taiwan to progress clinical development and commercialisation of HS-20093.
Upon commercialisation, the pharmaceutical giant will pay tiered royalties on global net sales outside of China's mainland, Hong Kong, Macau, and Taiwan.
GSK said the deal provides it with a second clinical-stage ADC that "complements its existing capabilities and strengths in developing medicines to address unmet medical needs in various solid tumours".
HS-20093 is currently being investigated in ongoing phase I and II trials in China. Data from the ARTEMIS-001 phase I trial for HS-20093 in advanced solid tumours was presented at the 2023 American Society of Clinical Oncology (ASCO) annual meeting. Initial clinical activity was observed in small cell lung cancer, non-small cell lung cancer and sarcoma with multiple confirmed responses and a manageable safety profile.
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