Abstract:
:Incidence rates of Wilms' tumor (WT) markedly differ in East Asian and Caucasian children. In the present study, we examined WT1 deletions/mutations and loss of heterozygosity (LOH) on 11p and 11q in a large number of WTs and compared our findings with those from 4 series of Caucasian WTs. Incidence rates of the subtle WT1 mutation in 3 of the 5 series of sporadic and unilateral WTs including ours were 4.3-6.2% and similar. However, gross homozygous WT1 deletion was more frequent in our series than in some others. In addition, our series tended to show a higher incidence of LOH limited to 11p13 and a lower incidence of LOH including 11p15 than the Caucasian one. These findings indicate some genetic differences in WT between the 2 regions. One of the 4 Caucasian series reported a correlation of germinal WT1 mutation with the predominantly stromal histology. The present study not only confirms the correlation of germinal WT1 deletion/mutation with predominant stromal histology but also establishes a correlation with somatic WT1 deletion/mutations with predominant stromal histology. While WTs with WT1 abnormalities usually showed pseudodiploidy and predominant stromal histology, those without WT1 abnormalities showed various chromosome numbers and histologic subtypes.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Nakadate H,Yokomori K,Watanabe N,Tsuchiya T,Namiki T,Kobayshi H,Suita S,Tsunematsu Y,Horikoshi Y,Hatae Y,Endo M,Komada Y,Eguchi H,Toyoda Y,Kikuta A,Kobayashi R,Kaneko Ydoi
10.1002/ijc.1475keywords:
subject
Has Abstractpub_date
2001-11-01 00:00:00pages
396-400issue
3eissn
0020-7136issn
1097-0215pii
10.1002/ijc.1475journal_volume
94pub_type
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