Abstract:
BACKGROUND:Although flow cytometric DNA analysis has been recognized to be a useful prognostic indicator for patients with squamous cell carcinoma of the esophagus, the biologic significance of DNA aneuploidy remains to be elucidated. METHODS:Twenty-five patients with squamous cell carcinoma of the esophagus who underwent a curative subtotal esophagectomy were divided into 2 groups according to the DNA ploidy pattern. Multiple genetic changes, including the gene amplification of bcl-1, epidermal growth factor receptor, and c-myc, and the loss of heterozygosity of multiple tumor suppressor genes, including retinoblastoma, mutated in colorectal carcinoma, adenomatous polyposis coli, and deleted in colorectal carcinoma, in each case were investigated and the frequency of genetic alterations compared between both groups. In addition, the clinical outcome of these patients was also investigated. RESULTS:Eleven of 15 cases in the aneuploid group demonstrated at least 1 genetic change (73.3%) whereas only 2 of 10 cases in the diploid group did so (20.0%) (P<0.05). Both cases in the diploid group with genetic alterations had only 1 genetic change of 7 tested genes whereas 9 of 11 cases in the aneuploid group had multiple genetic alterations. Patients in the aneuploid group also showed a more unfavorable prognosis than patients in the diploid group. CONCLUSIONS:Based on the findings of the current study, flow cytometric DNA analysis is considered to be useful for both detecting multiple genetic alterations and predicting the prognosis of patients with carcinoma of the esophagus.
journal_name
Cancerjournal_title
Cancerauthors
Watanabe M,Kuwano H,Tanaka S,Toh Y,Sadanaga N,Sugimachi Ksubject
Has Abstractpub_date
1999-06-01 00:00:00pages
2322-8issue
11eissn
0008-543Xissn
1097-0142pii
10.1002/(SICI)1097-0142(19990601)85:11<2322::AID-Cjournal_volume
85pub_type
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