Peptide-drug conjugates (PDCs) show potential as transformative cancer therapies, offering advantages over antibody-drug conjugates (ADCs) like smaller size, faster internalization, and reduced toxicity. SORT1-targeting PDCs leverage rapid internalization for effective delivery of cytotoxic payloads, demonstrated in preclinical trials with significant tumor regression. Clinical trials of SORT1+ Technology™ platform-based PDCs show promise, including durable disease stabilization and potential for radioisotope conjugates.