Reference Detail

Ref Type

Journal Article

PMID

(26090892)

Authors

Otani H, Yamamoto H, Takaoka M, Sakaguchi M, Soh J, Jida M, Ueno T, Kubo T, Asano H, Tsukuda K, Kiura K, Hatakeyama S, Kawahara E, Naomoto Y, Miyoshi S, Toyooka S

Title

TAE226, a Bis-Anilino Pyrimidine Compound, Inhibits the EGFR-Mutant Kinase Including T790M Mutant to Show Anti-Tumor Effect on EGFR-Mutant Non-Small Cell Lung Cancer Cells.

Journal	Vol	Issue	Date	Pages	Journal Short Title
PloS one	10	6	2015	e0129838	PLoS One

URL

Abstract Text

TAE226, a bis-anilino pyrimidine compound, has been developed as an inhibitor of focal adhesion kinase (FAK) and insulin-like growth factor-I receptor (IGF-IR). In this study, we investigated the effect of TAE226 on non-small-cell lung cancer (NSCLC), especially focusing on the EGFR mutational status. TAE226 was more effective against cells with mutant EGFR, including the T790M mutant, than against cells with wild-type one. TAE226 preferentially inhibited phospho-EGFR and its downstream signaling mediators in the cells with mutant EGFR than in those with wild-type one. Phosphorylation of FAK and IGF-IR was not inhibited at the concentration at which the proliferation of EGFR-mutant cells was inhibited. Results of the in vitro binding assay indicated significant differences in the affinity for TAE226 between the wild-type and L858R (or delE746_A750) mutant, and the reduced affinity of ATP to the L858R (or delE746_A750) mutant resulted in good responsiveness of the L858R (or delE746_A750) mutant cells to TAE226. Of interest, the L858R/T790M or delE746_A750/T790M mutant enhanced the binding affinity for TAE226 compared with the L858R or delE746_A750 mutant, resulting in the effectiveness of TAE226 against T790M mutant cells despite the T790M mutation restoring the ATP affinity for the mutant EGFR close to that for the wild-type. TAE226 also showed higher affinity of about 15-fold for the L858R/T790M mutant than for the wild-type one by kinetic interaction analysis. The anti-tumor effect against EGFR-mutant tumors including T790M mutation was confirmed in mouse models without any significant toxicity. In summary, we showed that TAE226 inhibited the activation of mutant EGFR and exhibited anti-proliferative activity against NSCLCs carrying EGFR mutations, including T790M mutation.

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Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References
BRAF G469A	lung non-small cell carcinoma	sensitive	TAE226	Preclinical	Actionable	In a preclinical study, TAE226 treatment inhibited proliferation of non-small cell lung carcinoma cell lines harboring BRAF G469A mutation in culture (PMID: 26090892).	26090892
EML4 - ALK	lung non-small cell carcinoma	sensitive	TAE226	Preclinical	Actionable	In a preclinical study, TAE226 treatment inhibited proliferation of non-small cell lung carcinoma cell lines harboring EML4-ALK fusion in culture (PMID: 26090892).	26090892
BRAF G466V	lung non-small cell carcinoma	sensitive	TAE226	Preclinical	Actionable	In a preclinical study, TAE226 treatment inhibited proliferation of non-small cell lung carcinoma cell lines harboring BRAF G466V mutation in culture (PMID: 26090892).	26090892