Hyunji Kim, a breast cancer patient, is in a clinical trial for LCB84, an antibody-drug conjugate, which has stabilized her liver metastasis. Dr. Yuan Yuan describes antibody-drug conjugates as designer drugs targeting specific cancer cells. Over 150 such conjugates are in trials, with Kadcyla, Enhertu, and Trodelvy approved for breast cancer. The field offers hope for chemotherapy-resistant diseases, with ongoing research exploring various targets and payloads.