Phrontline Biopharma (Hangzhou) Co. Ltd. has prepared and tested bispecific antibody-drug conjugates (bsADCs) comprising a bispecific antibody targeting B7 homolog 3 (B7-H3; CD276) and EGFR (HER1; erbB1) linked to a cytotoxic drug. They are described as potentially useful for the treatment of cancer.