AstraZeneca Has Entered Into An Agreement To Invest $2B In Newly Issued Equity In Summit Therapeutics To Accelerate The Development Of Ivonescimab, A First-In-Class Bispecific Antibody Targeting PD-1 And VEGF, In Combination With Antibody Drug Conjugates Across Tumour Types; Summit And AstraZeneca Have Also Entered Into A Clinical Collaboration Agreement To Evaluate Sonesitatug Vedotin In Combination With Ivonescimab