An Emerging Playbook For Antibody Drug Conjugates: Lessons From The Laboratory & Clinic Suggest A Strategy For Improving Efficacy And Safety

Summary: Antibody drug conjugates (ADCs) have become de rigueur for pharmaceutical oncology drug development pipelines. There are more than 40 ADCs undergoing clinical trials and many more in preclinical development. The field has rushed to follow the initial successes of KadcylaTM and AdcetrisTM , and moved forward with new targets without much pause for optimization. In some respects, the ADC space has become divided into the clinical realm — where the proven technologies continue to represent the bulk of clinical candidates with a few exceptions — and the research realm — where innovations in conjugation chemistry and linker technologies have suggested that there is much room for improvement in the conventional methods. Now, two and four years after the approvals of KadcylaTM and AdcetrisTM , respectively, consensus may at last be building that these two drugs rely on rather unique target antigens that enable their success. It is becoming increasingly clear that future target antigens will require additional innovative approaches. Next- generation ADCs have begun to move out of the lab and into the clinic, where there is a pressing need for continued innovation to overcome the twin challenges of safety and efficacy. 

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