Browse by author
Lookup NU author(s): Professor Hermann Josef Vormoor
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
BACKGROUND: Rhabdoid tumors represent an independent entity among embryonal neoplasms. These tumors affect the kidney (RTK, rhabdoid tumor of kidney) and central nervous system (AT/RT, atypical teratoid, rhabdoid tumor), but may also be found in peripheral soft tissue. Unifying features include immunohistochemical characteristics and inactivation of the putative tumor suppressor gene SMARCB1 (hSNF5/INI1) in chromosome 22q11.2. Several familial cases have been published and summarized under the term rhabdoid tumor predisposition syndrome. In all of the published familial cases, inactivation of SMARCB1 was detected in tumor tissues. PROCEDURE AND RESULTS: We report on a family with three children, two of which were affected by rhabdoid tumors, one RTK, the other an AT/RT. While both children demonstrated typical morphological and clinical features neither the RTK nor the AT/RT showed evidence for inactivation of SMARCB1 in molecular studies including CGH and array CGH, FISH, gene dosage analysis by dHPLC, and DNA-sequencing. Immunohistochemistry for SMARCB1 showed normal expression within the nuclei of tumor cells. Furthermore, both children inherited different paternal and maternal SMARCB1 alleles evidenced by haplotype analysis. Conventional cytogenetic, FISH, and mutation analyses lacked evidence for SMARCB1 aberrations or gross chromosomal changes in the parents. CONCLUSIONS: We thus demonstrate a family with rhabdoid tumor predisposition syndrome without linkage to SMARCB1. This finding indicates that other loci than SMARCB1 below the resolution of array CGH are involved in the origin of these tumors. Our data impact on the clinical counseling of affected families and warrant further studies in the molecular biology of these enigmatic tumors.
Author(s): Fruhwald MC, Hasselblatt M, Wirth S, Kohler G, Schneppenheim R, Subero JI, Siebert R, Kordes U, Jurgens H, Vormoor J
Publication type: Article
Publication status: Published
Journal: Pediatric Blood & Cancer
Year: 2006
Volume: 47
Issue: 3
Pages: 273-278
ISSN (print): 1545-5009
ISSN (electronic): 1545-5017
URL: http://dx.doi.org/10.1002/pbc.20526
DOI: 10.1002/pbc.20526
Notes: 1545-5009 (Print) Journal Article
Altmetrics provided by Altmetric
