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).
The study will consist of 3 periods: Screening (up to 28 days), Treatment (up to 17 cycles or 2 years), and Follow-up (up to 6 months).