PIK3CD and B-cell chronic lymphocytic leukemia: The individual EC50 values are listed (Fig. 6b) and these values are much lower that the EC50 values (Table 1) of Idelalisib (GS-1101, CAL-101), a potent and selective small molecule inhibitor of the delta isoform of the p110 subunit PI3K (PI3K p110δ) recently approved for the treatment of chronic lymphocytic leukemia and non-Hodgkin lymphoma31, 32, 33.