Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2018: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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Outline of Final Research Achievements |
In the leptomeningeal carcinomatosis (LMC) model of EGFR mutated lung cancer, we demonstrated that MET copy number gain caused resistance to 1st generation EGFR-tyrosine kinase inhibitors (TKI) and that combined use of MET inhibitor overcame the resistance. We also discovered 2 mutations which caused resistance to 3rd generation EGFR-TKI, osimertinib, in the LMC model. In the LMC model of ALK-rearranged lung cancer, we found that amphiregulin, an EGFR ligand, induced resistance to ALK-TKI alectinib and that combined use of EGFR-TKI overcame the resistance. In the brain metastasis model of NTRK1-rearranged cancer, we showed that NTRK1-G667C mutation caused resistance to TRK-A inhibitor entrectinib and that foretinib circumvent the resistance.
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