著者

Yoshiki Murakami Toshihito Tanahashi Rika Okada Hidenori Toyoda Takashi Kumada Masaru Enomoto Akihiro Tamori Norifumi Kawada Y-H. Taguchi Takeshi Azuma

出版者

一般社団法人情報処理学会

雑誌

研究報告バイオ情報学(BIO) (ISSN:09196072)

巻号頁・発行日

vol.2014, no.2, pp.1-5, 2014-12-11

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Although microarray has been an important tool that can perform extensive gene expression analyses, next generation sequencing (NGS) has recently arisen as an alternative methodology that can measure gene expression. In this paper, we have compared microarray and NGS quantitatively using microRNA measurements in hepatocellular carcinoma (HCC) and found that these two are coincident with each other. NGS also turned out to be used for biomarker between HCC and normal tissue if the recently proposed principal component analysis based unsupervised feature extraction was applied.Although microarray has been an important tool that can perform extensive gene expression analyses, next generation sequencing (NGS) has recently arisen as an alternative methodology that can measure gene expression. In this paper, we have compared microarray and NGS quantitatively using microRNA measurements in hepatocellular carcinoma (HCC) and found that these two are coincident with each other. NGS also turned out to be used for biomarker between HCC and normal tissue if the recently proposed principal component analysis based unsupervised feature extraction was applied.

著者

Akira Sato Michio Sata Kenji Ikeda Takashi Kumada Namiki Izumi Yasuhiro Asahina Yukio Osaki Kazuaki Chayama Shuichi Kaneko Akito Sakai Morikazu Onji Yoichi Hiasa Takumi Omura Itaru Ozeki Osamu Yokosuka Shuichiro Shiina Mariko Itsubo Shuhei Nishiguchi Katsuharu Hirano Tatsuya Ide Shotaro Sakisaka Takahiro Yamasaki Isao Hidaka Masatoshi Tanaka Soo Ryang Kim Takafumi Ichida

出版者

一般社団法人 日本内科学会

雑誌

Internal Medicine (ISSN:09182918)

巻号頁・発行日

vol.52, no.24, pp.2701-2706, 2013 (Released:2013-12-15)

参考文献数

32

被引用文献数

4 14

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Objective We attempted to elucidate the clinical features of chronic hepatitis C patients who develop hepatocellular carcinoma (HCC) after achieving a sustained viral response (SVR) to interferon (IFN) therapy. Methods The clinical features of 130 patients at 19 hospitals who developed HCC after obtaining an SVR were retrospectively reviewed. Results Overall, 107 (82%) of the 130 patients were men, with 92 (71%) being ≥60 years of age and 76, 38 and 16 developing HCC within 5, 5-10 and 10-16.9 years after IFN therapy, respectively. Before receiving IFN therapy, 92 (71%) patients had cirrhosis and/or a low platelet count (<15×104 cells/μL). Lower albumin (<3.9 g/dL) and higher alpha fetoprotein (AFP) (≥10 ng/mL) levels were identified in a multivariate analysis to be independent variables of the development of HCC within five years after IFN therapy. Among 4,542 SVR patients, HCC occurred in 109 (2.4%) during a 5.5-year follow-up period, thus resulting in an occurrence rate of 4.6% for men and 0.6% for women. Conclusion SVR patients with lower albumin or higher AFP levels require careful assessments to prevent early HCC development after IFN therapy. HCC occurrence within >10 years of IFN therapy is not uncommon, and the risk factors remain uncertain, thus suggesting that all SVR patients should undergo long-term follow-up examinations for HCC development.