Array-comparative genomic hybridization in sporadic benign pheochromocytomas

被引:21
作者
van Nederveen, Francien H. [1 ,2 ]
Korpershoek, Esther [1 ,2 ]
deLeeuw, Ronald J. [3 ]
Verhofstad, Albert A. [4 ,5 ]
Lenders, Jacques W. [4 ,5 ]
Dinjens, Winand N. M. [1 ,2 ]
Lam, Wan L. [3 ]
de Krijger, Ronald R. [1 ,2 ]
机构
[1] Erasmus MC, Josephine Nefkens Inst, Dept Pathol, NL-3000 CA Rotterdam, Netherlands
[2] Univ Med Ctr Rotterdam, Rotterdam, Netherlands
[3] British Columbia Canc Res Ctr, Dept Canc Genet, Vancouver, BC V5Z 1L3, Canada
[4] Univ Med Ctr St Radboud Nijmegen, Dept Pathol, Nijmegen, Netherlands
[5] Univ Med Ctr St Radboud Nijmegen, Dept Internal Med, Nijmegen, Netherlands
关键词
ABDOMINAL PARAGANGLIOMAS; CHROMOSOMES; 1P; CGH; GENE; HETEROZYGOSITY; MICROARRAY; LOSSES; ARM; 3Q;
D O I
10.1677/ERC-08-0241
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Pheochromocytomas (PCC) are catecholamine-producing tumors arising from the adrenal medulla that occur either sporadically or in the context of hereditary cancer syndromes, such as multiple endocrine neoplasia type 2 (MEN2), von Hippel-Lindau disease (VHL), neurofibromatosis type 1, and the PCC-paraganglioma syndrome. Conventional comparative genomic hybridization studies have shown loss of 1 p and 3q in the majority of sporadic and MEN2-related PCC, and 3p and 11p loss in VHL-related PCC. The development of a submegabase tiling resolution array enabled us to perform a genome-wide high-resolution analysis of 36 sporadic benign PCC. The results show that there are two distinct patterns of abnormalities in these sporadic PCC, one consisting of loss of 1 p with or without concomitant 3q loss in 20/36 cases (56%), the other characterized by loss of 3p with or without concomitant 11 p loss in 11/36 (31%). In addition, we found loss of chromosome 22q at high frequency (35%), as well as the novel finding of high frequency chromosome 21q loss (21%). We conclude that there appear to be two subgroups of benign sporadic PCC, one of which has a pattern of chromosomal abnormalities that is comparable with PCC from patients with MEN2 and the other that is comparable with the PCC that arise in patients with VHL disease. In addition, genes on 21q and 22q might play a more important role in PCC pathogenesis than had been assumed thus far
引用
收藏
页码:505 / 513
页数:9
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