In Part 1, subjects will receive a single dose of CC-220 in Period 1 and, following an appropriate washout, multiple doses of itraconazole plus one dose of itraconazole with CC-220 in Period 2. In Part 2, subjects will receive CC-220 in Period 1 and, following an appropriate washout, multiple doses of rifampin plus one dose of rifampin with CC-220 in Period 2.