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Canertinib dihydrochloride is a selective inhibitor of Pan-erbB tyrosine kinase with IC50 value of 3.5 nM [1].

ErbB receptor family is a member of the receptor tyrosine kinase superfamily and plays an important role in the normal breast development. It has been shown that ErbB overexpression involves in the pathogenesis and progression of breast cancer and is a negative prognostic indicator for breast cancer [2].

Canertinib dihydrochloride is a potent ErbB inhibitor and has a different selectivity with the reported ErbB inhibitor erlotinib. When tested with BT474 cells overexpressing ErbB2-receptor, treatment with Canertinib dihydrochloride induced cell apoptosis with 47% fraction by inhibiting Akt and MAPK activity [3]. In a panel of neuroblastoma cell lines, treated with Canertinib dihydrochloride resulted in a significant reduction in cell yield with IC50 value ranging from 0.94 μM to 2.45 μM  and induced cell apoptosis from 3% to 56% tested with SK-N-SH cells [2].

In 12 week old NOD-SCID-IL2R gamma knockout mouse model with SK-N-SH cells subcutaneous xenograft, administration of Canertinib dihydrochloride for 18 days resulted in a marked reduction in tumor growth and final tumor weight [2].

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