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. 2010 May 13;24(3):167–174. doi: 10.1002/jcla.20385

Molecular cytogenetic characterization of esophageal cancer detected by comparative genomic hybridization

Yuli C Chang 1,2, Kun‐Tu Yeh 3, Ta‐Chih Liu 1,2, Jan‐Gowth Chang 1,2,✉
PMCID: PMC6647568  PMID: 20486198

Abstract

Aim: Detection of cytogenetic alterations in esophageal cancer (EC). A total of 40 cases of primary EC and their paired nearby nontumor tissues were collected. The comparative genomic hybridization (CGH) is the technique that brings out the gains and losses of chromosome fragments and was applied to determine the aberrations from the tissue DNA. In noncancer tissues, the gains were at 19p (5/40, 13%), 20q (5/40, 13%), and losses at 9p (13/40, 33%), 2q (10/40, 25%), 12q (10/40, 25%), 13q (10/40, 25%), 5q (9/40, 23%), 6q (9/40, 23%), 7q (9/40, 23%), and 8p (9/40, 23%). Two cases in nontumor tissues showed no CGH change. In the 40 cases of primary EC, the gains were at 8q (10/40, 25%), 3q (9/40, 23%), 2q (7/40, 18%), and 13q (7/40, 18%), and the losses were at 1q (8/40, 20%), 4q (8/40, 20%), 3p (7/40, 18%), 5q (7/40, 18%), and 18q (7/40, 18%) in comparison with paired nearby noncancerous tissues. We found that the loss aberrations were on 1q, 2p, 3p, 5q, 6q, 9p, 11p, 15q, 16q, 18q, 21q and gains on 20p in both tumor and nontumor tissues; nevertheless, −4p, −7q, −8p, −10q, −12q, −13q, −14q and +17p, +19q, +22q were only found in nontumor tissues and +1q, +2pq, +3q, −4q, +4q, +5q, 7p, +8q, +10q, +12q, +13q, +14q −17p, −19pq, −22q in EC. From these results, we suggest that most of the tissues near the cancer parts of EC may be considered as a precancerous region. The alteration between cancer and noncancer tissues may play a role in the development of EC. J. Clin. Lab. Anal. 24:167–174, 2010.© 2010 Wiley‐Liss, Inc.

Keywords: comparative genomic hybridization (CGH), esophageal cancer (EC), nearby nontumor tissues

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