CDCP1 and neoplasm: Similarly, the novel human antibody 4A06 (which recognises CDCP1) radiolabelled with zirconium-89 (89Zr-4A06) was able to detect CDCP1 expression, while the therapeutic constructs of the antibody (177Lu-4A06 and 225Ac-4A06) inhibited the growth of pancreatic subcutaneous xenograft tumours in mice [209].