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Partial allelotype of schistosomiasis‐associated bladder cancer
Author(s) -
Shaw Margaret E.,
Elder Patricia A.,
Abbas Ahmed,
Knowles Margaret A.
Publication year - 1999
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/(sici)1097-0215(19990301)80:5<656::aid-ijc4>3.0.co;2-a
Subject(s) - schistosoma haematobium , biology , bladder cancer , schistosomiasis , chromosome 9 , cancer , pathology , carcinoma , loss of heterozygosity , transitional cell carcinoma , cervical cancer , chromosome , schistosoma , gene , immunology , medicine , genetics , schistosoma mansoni , helminths , allele
In Egypt and other regions of the Middle East where the trematode Schistosoma haematobium is endemic, bladder cancer is the most common adult cancer. Unlike bladder cancers in Western countries, which are predominantly transitional‐cell carcinoma (TCC), these schistosomiasis‐associated bladder cancers are predominantly squamous‐cell carcinoma (SCC). Our aim was to assess a large series of schistosomiasis‐associated bladder tumours for genetic alterations commonly found in TCC in the United Kingdom and the United States. We have carried out a partial allelotype of 70 tumours from patients with schistosomiasis. LOH was found on all chromosome arms studied (3p, 4p, 4q, 8p, 9p, 9q, 11p, 11q, 13q, 14q, 17p, 18q). The most frequent regions of LOH were 9p (65%), 17p (58%), 3p (40%), 9q (39%) and 8p (37%). LOH on 17p, where the TP53 gene is located, was more common in Egyptian TCC than in SCC. Similarly, 8p LOH was more common in TCC than SCC. The most striking difference between this group of tumours and TCCs from the United Kingdom and the United States was the high frequency of 9p LOH in the region of the CDKN2 gene (65%) and the relatively low frequency of 9q LOH (39%); 15 of 43 tumours with LOH of at least one marker on chromosome 9 showed LOH of 9p only. This suggests that a 9p gene, possibly CDKN2 , may contribute to the development of the majority of schistosomiasis‐associated bladder tumours but that genes on 9q play a much less important role. Int. J. Cancer 80:656–661, 1999. © 1999 Wiley‐Liss, Inc.