Antibody-drug conjugates, a well-established antitumor strategy, are used for targeted delivery of cytotoxic drugs through antibodies. As cancer research progresses, other technologies with different mechanisms are advancing in the oncologic pipeline. Researchers from Cybrexa Therapeutics Inc. presented new preclinical data on CBX-15, a peptide-drug conjugate (PDC) consisting of a pH-low insertion peptide (pHLIP) linked to monomethyl auristatin E (MMAE).