Used in targeted cancer therapies, particularly in detecting and treating solid tumors such as pancreatic, breast, and prostate cancers. Binds specifically to the Glypican-1 protein, which is overexpressed on tumor cell surfaces, enabling precise delivery of conjugated drugs or imaging agents. Supports diagnostic applications by identifying early-stage cancer cells in liquid biopsies through detection of GPC1-positive exosomes. Also utilized in research to study tumor growth mechanisms and evaluate therapeutic efficacy in preclinical models.