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Agrawal, Nishant; Jiao, Yuchen; Bettegowda, Chetan; Hutfless, Susan M; Wang, Yuxuan; David, Stefan; Cheng, Yulan; Twaddell, William S; Latt, Nyan L; Shin, Eun J; Wang, Li-Dong; Wang, Liang; Yang, Wancai; Velculescu, Victor E; Vogelstein, Bert; Papadopoulos, Nickolas; Kinzler, Kenneth W; Meltzer, Stephen J
Cancer discovery, 10/2012, Letnik: 2, Številka: 10Journal Article
Esophageal cancer ranks sixth in cancer death. To explore its genetic origins, we conducted exomic sequencing on 11 esophageal adenocarcinomas (EAC) and 12 esophageal squamous cell carcinomas (ESCC) from the United States. Interestingly, inactivating mutations of NOTCH1 were identified in 21% of ESCCs but not in EACs. There was a substantial disparity in the spectrum of mutations, with more indels in ESCCs, A:T>C:G transversions in EACs, and C:G>G:C transversions in ESCCs (P < 0.0001). Notably, NOTCH1 mutations were more frequent in North American ESCCs (11 of 53 cases) than in ESCCs from China (1 of 48 cases). A parallel analysis found that most mutations in EACs were already present in matched Barrett esophagus. These discoveries highlight key genetic differences between EACs and ESCCs and between American and Chinese ESCCs, and suggest that NOTCH1 is a tumor suppressor gene in the esophagus. Finally, we provide a genetic basis for the evolution of EACs from Barrett esophagus.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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