Irinotecan Plus Lenalidomide in Adult Patients With Recurrent Glioblastoma Multiforme: Phase I

200 mg/m\^2 by vein over 90 minutes once every 2 weeks on days 1 and 15.

Given orally at escalating doses beginning 7.5 mg/day on Cycle 1 Days 1-21 and 10 mg/day on Cycle 2 Days 1-21.