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2018 Fiscal Year Final Research Report

Therapeutic drug monitoring of EGFR-KIs for non-small cell lung cancer patients

Research Project

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Project/Area Number 16K09568
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Respiratory organ internal medicine
Research InstitutionShizuoka Cancer Center Research Institute

Principal Investigator

Hirotsugu Kenmotsu  静岡県立静岡がんセンター(研究所), その他部局等, 研究員 (50602637)

Co-Investigator(Kenkyū-buntansha) 今村 知世  慶應義塾大学, 医学部(信濃町), 講師 (00570954)
谷川原 祐介  慶應義塾大学, 医学部(信濃町), 教授 (30179832)
Project Period (FY) 2016-04-01 – 2019-03-31
Keywords非小細胞肺癌 / 臨床薬理学 / EGFRチロシンキナーゼ阻害剤
Outline of Final Research Achievements

Seventy non-small cell lung cancer (NSCLC) patients were included in this study. Response was not associated with the area under the concentration-time curve (AUC). There was also no significant difference in progression-free survival between patients with AUC > 37.0 μg・h/mL and <= 37.0 μg・h/mL. Ctrough was significantly correlated with the grade of skin rash (p<0.01), but not with objective response. The lack of a relationship between erlotinib exposure and efficacy shows that the approved dose of erlotinib is sufficient to reach the therapeutic range in NSCLC patients, even with dose reduction due to toxicities.

Free Research Field

呼吸器学

Academic Significance and Societal Importance of the Research Achievements

本課題で行われた3つの臨床試験の結果より、EGFR遺伝子変異陽性の非小細胞肺癌において、EGFRチロシンキナーゼ阻害剤の血液中濃度とその治療効果(奏効割合、無増悪生存期間)には相関は認めなかった。一方で、副作用と血中濃度には相関を認め、副作用を減らすために薬剤の用量を調整することの有用性についてはさらに検討が必要であると考えられた。
チロシンキナーゼ阻害剤はEGFR 遺伝子変異陽性の非小細胞肺がん患者に対するキードラッグであり、今後も個別化投与の確立を目指すことが重要である。

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Published: 2020-03-30  

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