The study medicine is designed to stick to cancer cells and kill them by delivering an anticancer treatment.
The study medicine may also attach to non-cancer cells. The study medicine is given by intravenous (through a vein) infusion in a cycle that repeats every 6 weeks. Infusions of the study medicine are given 3 times per cycle (Day 1, Week 2, and Week 4). The standard therapy is given by intravenous infusion 1 time (Day 1) during every 6-week cycle.