Incyte Corporation and China Medical System Holdings Limited announced that on March 31, 2024, Incyte and CMS, through a wholly-owned dermatology medical aesthetic subsidiary of the Company, entered into a Collaboration and License Agreement for the development and commercialization of povorcitinib, a selective oral JAK1 inhibitor, to research, develop, register and commercialize the Product in Mainland China, Hong Kong, Macao, Taiwan Region and eleven Southeast Asian countries and a non-exclusive license to manufacture the Product in CMS? Territory. Under the terms of the agreement, CMS will make an upfront payment to Incyte and Incyte is eligible to receive additional potential development and commercial milestones and royalties on net sales of the licensed product in CMS?

territory. CMS will receive an exclusive license to develop and commercialize and a non-exclusive license to manufacture povorcitinib in autoimmune and inflammatory dermatologic diseases, including non-segmental vitiligo, hidradenitis suppurativa (HS), prurigo nodularis (PN), asthma and chronic spontaneous urticaria, for patients in mainland China, Hong Kong, Macau, Taiwan and certain countries in Southeast Asia. The transaction is effective immediately upon the execution of the Collaboration and License Agreement.

About Povorcitinib: Povorcitinib is a selective oral small-molecule JAK1 inhibitor, with compound and use patents in certain countries/regions in the Territory. Currently, povorcitinib is in Phase 3 clinical trials for non-segmental vitiligo and HS in multiple countries outside of China. Additionally, Phase 2 clinical studies of povorcitinib for PN, asthma and chronic spontaneous urticaria are also ongoing.