Tarcocimab and KSI-501 bring the best of both worlds – with a science of high immediacy and high durability at the same time in a single biologic Molecular Size (kDa) Tarcocimab KSI-501 + 1 mg unconjugated protein for immediacy 4 mg high molecular weight ABC ® for durability + 1.5 mg unconjugated protein for immediacy 3.5 mg high molecular weight ABC ® for durability 24