Multicenter, open-label, dose-escalation, multidose study of MDX-1203, a fully human monoclonal antibody drug conjugate targeting the CD70 transmembrane cell-surface protein which is highly expressed in ccRCC and B-NHL. MDX-1203 is composed of a human anti-CD70 monoclonal antibody covalently linked to a prodrug form of a cytotoxic deoxyribonucleic acid (DNA) minor-groove binding agent (MGBA).