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Yanagi, M.* ; Keller, G.* ; Müller, J.* ; Walch, A.K. ; Werner, M.* ; Stein, H.J.* ; Siewert, J.R.* ; Höfler, H.

Comparison of loss of heterozygosity and microsatellite instability in adenocarcinomas of the distal esophagus and proximal stomach.

Virchows Arch. 437, 605-610 (2000)
DOI
Adenocarcinoma of the gastroesophageal junction is rapidly rising in incidence. It has been proposed that these tumors be classified as three different types: distal esophageal (AEG I), cardia (AEG II), and subcardia (AEG III). Using comparative genomic hybridization (CGH) analysis, one recent study reported that the 14q chromosomal arm showed a significantly higher rate of deletion in esophageal than in cardia adenocarcinoma. Using a microsatellite analysis technique, we analyzed this area and regions in the vicinity of the APC, DCC, and p53 genes. Tumor and normal tissues were microdissected from 54 cases (27 AEG I and 27 AEG III). DNA was extracted and then amplified using seven fluorescent-labeled microsatellite markers, one pair each on 5q, 18q, and 17p and four on 14q. The results were analyzed for loss of heterozygosity (LOH) and microsatellite instability (MSI). LOH varied from 20% to 30% at each locus except for the 17p locus, where it was slightly above 50% in both groups. No significant differences in LOH or MSI were found between the esophageal and gastric tumors, including the 14q chromosomal arm. These results fail to confirm the finding that abnormalities on the 14q chromosomal arm distinguish between distal esophageal and proximal gastric tumors.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Adenocarcinoma Gastroesophageal unction Loss of heterozygosity Microsatellite instability
ISSN (print) / ISBN 0042-6423
e-ISSN 1432-2307
Journal Virchows Archiv
Quellenangaben Volume: 437, Issue: 6, Pages: 605-610 Article Number: , Supplement: ,
Publisher Springer
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Pathology (PATH)