ニワ　ユキコ   NIWA Yukiko   丹羽　由紀子    所属   医学部 医学科（附属八千代医療センター）    職種   講師
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	FAM46C Serves as a Predictor of Hepatic Recurrence in Patients with Resectable Gastric Cancer.
掲載誌名	正式名：Annals of surgical oncology 略　 称：Ann Surg Oncol ISSNコード：15344681/10689265
掲載区分	国外
巻・号・頁	24(11),pp.3438-3445
著者・共著者	Tanaka Haruyoshi, Kanda Mitsuro, Shimizu Dai, Tanaka Chie, Kobayashi Daisuke, Hayashi Masamichi, Iwata Naoki, Yamada Suguru, Fujii Tsutomu, Nakayama Goro, Sugimoto Hiroyuki, Fujiwara Michitaka, Niwa Yukiko, Kodera Yasuhiro
発行年月	2017/10
概要	BACKGROUND:Gastric cancer (GC) relapse can occur even if curative resection is achieved. Biomarkers predicting recurrence are needed to provide appropriate postoperative surveillance and perioperative therapeutic strategy.METHODS:A global expression profiling was performed using tissues from GC patients with synchronous liver-confined metastasis. Family with sequence similarity 46, member C (FAM46C), was identified as a candidate biomarker. mRNA expression analysis, direct nucleotide sequencing, bisulfite sequencing and copy number assays for FAM46C were performed with eleven GC cell lines. Expression levels of FAM46C in primary GC tissues from 129 patients who underwent curative GC resection were determined and correlated with clinicopathological factors, including postoperative outcome.RESULTS:Levels of FAM46C mRNA differed among GC cell lines. Point mutations in FAM46C were detected in five GC cell lines accompanied with reduced FAM46C transcription. No hypermethylation was found in the promoter region of FAM46C. Copy number alterations were found in six GC cell lines with differing FAM46C transcription levels. Reduced FAM46C mRNA expression levels were detected in 117 (91 %) GC specimens compared with adjacent noncancerous tissues. Low FAM46C expression levels were significantly associated with larger macroscopic GC tumor sizes. The low FAM46C expression group was likely to have shorter disease-free survival than the high group and low FAM46C level was identified as an independent risk factor for recurrence after curative resection. FAM46C expression levels were low in all cases that were later found to have hepatic recurrence.CONCLUSIONS:Reduced GC expression of FAM46C is a potential biomarker to predict hepatic recurrence after curative gastrectomy.
DOI	10.1245/s10434-016-5636-y
PMID	27770343