AZD8931, a reversible, ATP competitive inhibitor of EGFR(IC50=4 nM), ErbB2(IC50=3 nM) and ErbB3(IC50=4 nM), is more effective over Gefitinib or Lapatinib against NSCLC cell, 100-fold more specific for the ErbB family over MNK1 and Flt.