ID | 113692 |
タイトル別表記 | 肺腺癌患者の予後予測におけるGAD1過剰発現の有用性
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著者 |
Kohmoto, Tomohiro
Tokushima University
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キーワード | GAD1
lung adenocarcinoma
expression
prognosis
DNA methylation
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資料タイプ |
学位論文
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抄録 | Background and Objectives: In a previous genome-wide screening, we identified hypermethylated CpG islands around glutamate decarboxylase 1 (GAD1) in lung adenocarcinoma (LADC). In this study, we aimed to investigate the methylation and expression status of GAD1 and its prognostic value in patients with LADC.
Methods: GAD1 methylation and mRNA expression status were analyzed using 33 tumorous and paired non-tumorous LADC samples and publicly available datasets. The prognostic value of GAD1 overexpression was investigated using publicly available datasets of mRNA levels and 162 cases of LADC by immunohistochemistry. Results: The methylation and mRNA expression levels of GAD1, each having a positive correlation, were significantly higher in LADC tumors than in paired non-tumorous tissues. LADC patients with higher GAD1 mRNA expression showed significantly poorer prognosis for overall survival in publicly available datasets. Higher immunoreactivity of GAD1 was significantly associated with the pathological stage, pleural invasion, lymph vessel invasion, and poorer prognosis for cancer-specific and disease-free survival. Multivariate analysis revealed that GAD1 protein overexpression is an independent prognosticator for disease-free survival. Conclusions: GAD1 mRNA and protein expression levels were significant prognostic factors in LADC, suggesting that they might be useful biomarkers to stratify patients with worse clinical outcome after resection. |
掲載誌名 |
Cancer Medicine
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ISSN | 20457634
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出版者 | John Wiley & Sons, Ltd
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巻 | 8
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号 | 9
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開始ページ | 4189
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終了ページ | 4199
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発行日 | 2019-06-17
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備考 | 内容要旨・審査要旨・論文本文の公開
本論文は,著者Mitsuhiro Tsuboiの学位論文として提出され,学位審査・授与の対象となっている。 |
権利情報 | © 2019 The Authors. Cancer Medicine published by John Wiley & Sons Ltd.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.( https://creativecommons.org/licenses/by/4.0/ ) |
EDB ID | |
出版社版DOI | |
出版社版URL | |
フルテキストファイル | |
言語 |
eng
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著者版フラグ |
博士論文全文を含む
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文科省報告番号 | 甲第3321号
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学位記番号 | 甲医第1423号
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学位授与年月日 | 2019-07-25
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学位名 |
博士(医学)
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学位授与機関 |
徳島大学
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部局 |
病院
医学系
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