Dacomitinib (PF299804, PF299)是一种有效的，不可逆的pan-ErbB抑制剂，最有效作用于EGFR，IC50为6 nM，高效作用于携带EGFR或ERBB2突变型(抗Gefitinib)和携带EGFR T790M突变型的NSCLCs。A potent and selective inhibitor of EGFR and ERBB phosphorylation. PF-299804 is a potent, irreversible pan-ErbB inhibitor, mostly to EGFR with IC50 of 6 nM, effective against NSCLCs with EGFR or ERBB2 mutations (resistant to gefitinib) as well as those harboring the EGFR T790M mutation. A potent and selective inhibitor of EGFR and ERBB phosphorylation.