Phase II component Bortezomib 1.3 mg/m2 IV bolus, Days 1, 4, 8, and 11 Doxorubicin 30 mg/m2 IV over 1 hour, Day 4 Bendamustine at MTD IV over 1 hour, Days 1 and 4 Filgrastim (if defined in MTD) 5 µg/kg/day SC, Starting day 6 until neutrophil recovery to ANC >1000