Phase 1b Safety and Efficacy Study of TRU-016

"TRU-016: 10 mg/kg for first dose, all subsequent doses 20 mg/kg, IV once weekly for 8 weeks followed by 4 monthly doses~Rituximab: 375 mg/m2 for first dose, all subsequent doses 500 mg/m2, IV once weekly for 8 weeks followed by 4 monthly doses"

"TRU-016: 6 mg/kg for first dose, all subsequent doses 10 mg/kg, IV on Day 1, 8 and 15, followed by 5 monthly doses~Rituximab: 375 mg/m2 for first dose, all subsequent doses 500 mg/m2, IV following TRU-016 schedule"

"TRU-016: 6 mg/kg on Day 1, 20 mg/kg on Day 8 and 15, then 20 mg/kg once a month for 5 months~Obinutuzumab: 100 mg on Day 1, 900 mg on Day 2, 1,000 mg on Day 8 and 15, then 1,000 mg once a month for 5 months"

TRU-016: 6 mg/kg on Days 15-36 weekly, 10 mg/kg on Days 43 and 50, then 20 mg/kg once a month for 5 months.

TRU-016: Dosed weekly for 8 weeks followed by 4 monthly intravenous (IV) infusions. The first dose will be 10 mg/kg and all subsequent doses will be 20 mg/kg.

TRU-016 dosed 10 mg/kg for the first dose and then 20 mg/kg weekly for 2 cycles, followed by dosing every other week for an additional 4 cycles (cycle = 28 days). Bendamustine (90 mg/m2 on days 2 and 3 of cycle 1 and then days 1 and 2 of cycles 2 to 6) will be infused after completion of TRU-016. If a patient is benefiting with stable disease or better, then TRU-016 may continue to be dosed every 3 weeks after the first 6 cycles; bendamustine will not be dosed beyond 6 cycles.