Research article summary (published 13 Oct 2009):

Amplification and expression of EGFR and ERBB2 in Wilms tumor.

Full Abstract

Wilms tumor is one of the most common solid tumors in children. We evaluated expression and amplification of a number of genes and their prognostic significance in 45 patients with Wilms tumor, using tissue microarray technology. The expression of EGFR, ERBB2, MDM2, CCND1, MLH1, MSH2, TP53, and ABCB1 (alias MDR1) was studied by immunohistochemistry. Amplification of the EGFR, ERBB2, MDM2, CCND1, CTTN (previously EMS1), RAF1, MYC, FGF3 (previously INT2), WNT1, GLI1, CDK4, and NCOA3 (alias AIB1) genes was assessed by fluorescence in situ hybridization. Expression of EGFR was seen in 17 of the 45 cases (38%) but was not associated with gene amplification. The ERBB2 gene was neither overexpressed nor amplified in any case. Tissue microarray and immunohistochemistry analyses for ERBB2 in whole-tumor sections were also negative in all cases. Strong p53 reactivity was noted in blastemal cells in two cases with an unfavorable outcome. ABCB1 reactivity was seen in five cases with favorable histology and outcome. Only one case showed nuclear cyclin D1 positivity. All tumors showed MLH1 and MSH2 expression. All examined genes showed normal copy numbers. Unfavorable histology correlated with poor prognosis (P=0.03). There was no significant association between gene expression and prognosis. Overexpression of the EGFR gene in many Wilms tumor cases warrants further study to determine the therapeutic benefit of EGFR inhibitors in combination with other therapies in Wilms tumor patients.

Author information

Author/s: Vasei, Mohammad (M); Modjtahedi, Helmout (H); Ale-Booyeh, Oreineb (O); Mosallaei, Ahmad (A); Kajbafzadeh, Abdol Mohammad (AM); Shahriari, Mehdi (M); Ghaderi, Abbas Ali (AA); Soleymanpour, Hossein (H); Kosari, Farid (F); Moch, Holger (H); Sauter, Guido (G);

Affiliation: Department of Pathology, Shiraz Medical School and Shiraz Institute of Cancer Research, Shiraz University of Medical Sciences, Shiraz, Iran. vaseim(-atsign-)sums.ac.ir

Journal and publication information

Publication Type: Journal Article

Journal: Cancer genetics and cytogenetics (Cancer Genet Cytogenet), published in United States. (Language: eng)

Reference: 2009-Oct; vol 194 (issue 2) : pp 88-95

Dates: Created 2009/09/28; Completed 2009/10/08;

PMID: 19781441, status: MEDLINE (last retrieval date: 10/8/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adolescent Animals Child Child, Preschool Female Gene Amplification Genes, erbB-1 Genes, erbB-2 Humans Infant

Kidney Neoplasms - genetics; metabolism; pathology Male Mice Mice, Nude Receptor, Epidermal Growth Factor - metabolism Receptor, erbB-2 - metabolism Retrospective Studies Tissue Array Analysis Transplantation, Heterologous Wilms Tumor - genetics; metabolism; pathology

Associated Chemicals: Receptor, Epidermal Growth Factor (EC 2.7.1.112) ; Receptor, erbB-2 (EC 2.7.1.112) ; EGFR protein, human (EC 2.7.10.1) ; ERBB2 protein, human (EC 2.7.10.1)

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