Chemotherapy-induced augmentation of T cells expressing inhibitory receptors is reversed by treatment with lenalidomide in chronic lymphocytic leukemia

While T-cell dysfunction occurring alongside chronic lymphocytic leukemia (CLL) is well documented (reviewed by Pleyer et al. [1][1] and Hamblin et al. [2][2]), it was recently reported that also T-cell exhaustion is associated with CLL, reflected in the presence of PD-1+ CLL T cells and higher