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        <identifier>oai:kanazawa-u.repo.nii.ac.jp:00051120</identifier>
        <datestamp>2024-07-01T05:18:19Z</datestamp>
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          <dc:title>大腸癌における循環腫瘍DNAを用いたEGFR抗体薬耐性の検出と個別化治療への応用</dc:title>
          <dc:title>Detection of acquired resistance to anti-EGFR monoclonal antibodies in patients with metastatic colorectal cancer using circulating tumor DNA</dc:title>
          <dc:creator>中村, 慶史</dc:creator>
          <dc:creator>666</dc:creator>
          <dc:creator>30608691</dc:creator>
          <dc:creator>30608691</dc:creator>
          <dc:description>Circulating tumor DNA (ctDNA) has been attracting attention for its ability to provide comprehensive, minimally invasive tissue profiling. To assess clinical usefulness of ctDNA as prognostic and predictive marker for the treatment of metastatic colorectal cancer (mCRC), we explored genetic alterations in ctDNA in 50 patients with RAS wildtype mCRC treated with anti-EGFR antibodies. Blood samples were collected before initiation and during administration of anti-EGFR antibodies as well as after disease progression (PD). Extraction of ctDNA from plasma and detection of genetic changes associated with resistance to anti-EGFR antibodies were performed by digital PCR. For patients with genetic alteration identified before chemotherapy or after PD, we also performed analysis of ctDNA during the course of the disease. Analyses are ongoing to determine if ctDNA can be used to predict response to EGFR blockade before treatment, as well as to monitor disease response during EGFR blockade.</dc:description>
          <dc:description>RAS遺伝子野生型の切除不能進行再発大腸癌と診断され、抗EGFR抗体薬併用の化学療法を施行した50例を対象とした。全例で化学療法開始前と投与中、病状進行（PD）後の血液採取を行った。化学療法開始前もしくはPD後の血漿から循環腫瘍DNA（ctDNA）を抽出し、デジタルPCRでEGFR抗体薬耐性関連遺伝子の変異解析を行なった。化学療法開始前もしくはPD後に変異が同定された症例に関して、経過中のctDNAの変異解析も行った。今後、臨床情報を収集し、ctDNAによって治療前に抗EGFR抗体薬の治療効果予測が可能かどうか、さらに、化学療法中に治療効果のモニタリングが可能かどうかを検討する。</dc:description>
          <dc:description>研究課題/領域番号:17K10625, 研究期間(年度):2017-04-01 – 2022-03-31</dc:description>
          <dc:description>出典：研究課題「大腸癌における循環腫瘍DNAを用いたEGFR抗体薬耐性の検出と個別化治療への応用」課題番号17K10625
（KAKEN：科学研究費助成事業データベース（国立情報学研究所）） 
（https://kaken.nii.ac.jp/ja/report/KAKENHI-PROJECT-17K10625/17K10625seika/ ）を加工して作成</dc:description>
          <dc:description>金沢大学附属病院胃腸外科</dc:description>
          <dc:description>research report</dc:description>
          <dc:date>2022-05-29</dc:date>
          <dc:type>AM</dc:type>
          <dc:format>application/pdf</dc:format>
          <dc:identifier>令和3(2021)年度 科学研究費補助金 基盤研究(C) 研究成果報告書</dc:identifier>
          <dc:identifier>2017-04-01 – 2022-03-31</dc:identifier>
          <dc:identifier>5p.</dc:identifier>
          <dc:identifier>2021 Fiscal Year Final Research Report</dc:identifier>
          <dc:identifier>https://kanazawa-u.repo.nii.ac.jp/record/51120/files/HO-PR-NAKAMURA-K-kaken 2022-5p.pdf</dc:identifier>
          <dc:identifier>https://doi.org/10.24517/00057423</dc:identifier>
          <dc:identifier>http://hdl.handle.net/2297/00057423</dc:identifier>
          <dc:identifier>https://kanazawa-u.repo.nii.ac.jp/records/51120</dc:identifier>
          <dc:language>jpn</dc:language>
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          <dc:relation>https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17K10625/</dc:relation>
          <dc:relation>https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17K10625/</dc:relation>
          <dc:relation>https://kaken.nii.ac.jp/ja/report/KAKENHI-PROJECT-17K10625/17K10625seika/</dc:relation>
          <dc:relation>https://kaken.nii.ac.jp/ja/report/KAKENHI-PROJECT-17K10625/17K10625seika/</dc:relation>
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