Like many treatments Revimid (5 or 10mg?) takes a while to show an effect - 6 months is common but YMMV. I only lasted for 4 months on it before WBC and neutrophils were too low to continue. 
__________________
Ric: Low-risk MDS (blasts <4%); 4 cycles Revlimid no positive response; PRBC transfusion dependent; so far, 392'units' over 8 3/4 years; BMB #4 (15/04/01) shows evolution to AML (blasts 20-30%  ) 47,XY,del(5) (q22q35),+21[24][cp24]/46,XY(1).
|