title: Methylation-based molecular margin analysis in hepatocellular carcinoma.
abstract: The positive surgical margins are associated with postsurgical recurrence in hepatocellular carcinoma patients, and molecular margin analysis is considered more sensitive in detecting preneoplastic lesions than conventional histological margin examination. To evaluate the feasibility of methylation-based molecular margin analysis in HCC and explore its clinical application, we investigated CDKN2A methylation status in the surgical margins of 20 HCC patients using a nested BS-MSP protocol and compared the methylation patterns in resection margins with those in the corresponding tumor and adjacent nonmalignant tissues. The results showed that a considerable frequency (35%, 7 of 20) of CDKN2A methylation was present in histologically negative margins, and methylation pattern analysis might be valuable for studying the cellular origin of recurrent carcinoma. Therefore, methylation-based molecular surgical margin analysis offers a promising tool in prognosis for HCC patients who underwent hepatectomy.
authors.affiliation: Department of Genetics, College of Life Science, Nankai University, Tianjin 300071, PR China.
authors.forename: Bin
authors.initials: B
authors.lastname: Yang
authors.forename: Ying-Tang
authors.initials: YT
authors.lastname: Gao
authors.forename: Zhi
authors.initials: Z
authors.lastname: Du
authors.forename: Lei
authors.initials: L
authors.lastname: Zhao
authors.forename: Wen-Qin
authors.initials: WQ
authors.lastname: Song
mesh_terms: D000328:Adult; D000368:Aged; D001483:Base Sequence; D006528:Carcinoma, Hepatocellular / Q000235:genetics / Q000378:metabolism* / Q000473:pathology* / Q000601:surgery; D019941:Cyclin-Dependent Kinase Inhibitor p16 / Q000235:genetics / Q000378:metabolism*; D005260:Female; D006801:Humans; D008297:Male; D008745:Methylation; D008875:Middle Aged
chemical_list: D019941:Cyclin-Dependent Kinase Inhibitor p16