Unraveling the Interaction between Carboxylesterase 1c and the Antibody–Drug Conjugate SYD985: Improved Translational PK/PD by Using Ces1c Knockout Mice

Abstract excerpt

Abstract Carboxylesterase 1c (CES1c) is responsible for linker-drug instability and poor pharmacokinetics (PK) of several antibody–drug conjugates (ADC) in mice, but not in monkeys or humans. Preclinical development of these ADCs could be improved if the PK in mice would more closely resemble that of humans and is not affected by an enzyme that is irrelevant for humans. SYD985, a HER2-targeting ADC based on...

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