CC-122
DrugCC-122 dose in both arms will increase by 1 mg increments starting with 3 mg 5/7 days using the 3+3 design in dose escalation phase. A dose-level -1, with a starting dose of 2mg, may also be evaluated if the opening dose level is not tolerated. At all dose levels in MM-2b arm, DEX will be combined with CC-122 at a starting dose dependent on the subject's age: for subjects who are ≤ 75 years of age, DEX 40 mg/day will be given on Days 1, 8, 15 and 22 of a 28-day cycle and for subjects who are > 75 years of age, DEX 20 mg/day will be given on Days 1, 8, 15 and 22 of a 28-day cycle. Approximately 33 subjects will be enrolled in the dose escalation phase (15 in each treatment arm). An additional intermittent schedule of 21/28 days may be evaluated per Safety Review Committee (SRC) decision. Following dose escalation, one or two arms will be expanded at or below the MTD in up to 28 subjects (14 subjects in each arm).