An initial cohort of at least three subjects will be given CC-122 at a dose of 2.0 mg on an intermittent dosing schedule (5 continuous days out of 7 days per week) and 3-6 subjects will be enrolled in subsequent dose levels. Dose escalation for subsequent cohorts will proceed according to a standard dose escalation design (3+3 design) (Storer, 1989) to establish initial toxicity.