[Antibody-Drug Conjugates in Breast Cancer and Gynecologic Cancer]

Antibody-drug conjugates(ADCs)have become widely used in the treatment of various malignancies over the past 15 years. In breast cancer, T-DM1 and T-DXd which is HER2-targeted ADC have been approved and are broadly used in Japan. Sacituzumab govitecan, TROP2-ADC has been approved in US. Hence, multiple ADCs could be used for breast cancer treatment. In gynecological cancers, tisotumab vedotin for cervical cancer and mirvetuximab soravtansine for ovarian cancer have been approved in the US. Optimizing treatment sequences and overcoming resistance mechanisms for ADC are important challenges in the situations where multiple ADCs are available. The current development landscape suggests further enhancement of ADC treatment efficacy through new targets, novel payloads, bispecific ADCs, and combination therapies with immunotherapy. This article outlines the current status of ADCs in breast and gynecological cancers, highlighting ongoing development and challenges emerging in the field.