Volume 28, Issue 10 pp. 909-915
Original Article

Phenotype–genotype correlation: Challenge of intestinal-type adenocarcinoma of the nasal cavity and paranasal sinuses

Milo Frattini PhD

Milo Frattini PhD

Department of Experimental Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy

Department of Pathology, Unit of Experimental Molecular Pathology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Via Venezian 1, 20133 Milano. Italy

Milo Frattini and Federica Perrone contributed equally to this work.

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Federica Perrone PhD

Federica Perrone PhD

Department of Pathology, Unit of Experimental Molecular Pathology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Via Venezian 1, 20133 Milano. Italy

Milo Frattini and Federica Perrone contributed equally to this work.

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Simona Suardi PhD

Simona Suardi PhD

Department of Pathology, Unit of Experimental Molecular Pathology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Via Venezian 1, 20133 Milano. Italy

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Debora Balestra PhD

Debora Balestra PhD

Department of Experimental Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy

Department of Pathology, Unit of Experimental Molecular Pathology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Via Venezian 1, 20133 Milano. Italy

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Stefano Caramuta PhD

Stefano Caramuta PhD

Department of Pathology, Unit of Experimental Molecular Pathology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Via Venezian 1, 20133 Milano. Italy

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Federica Colombo PhD

Federica Colombo PhD

Department of Pathology, Unit of Experimental Molecular Pathology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Via Venezian 1, 20133 Milano. Italy

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Lisa Licitra MD

Lisa Licitra MD

Department of Head and Neck, Medical Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy

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Giulio Cantù MD

Giulio Cantù MD

Department of Head and Neck Surgery, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy

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Marco A. Pierotti PhD

Marco A. Pierotti PhD

Department of Experimental Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milan, Italy

Federazione Italiana Ricerca Cancro Institute of Molecular Oncology, Milan, Italy

Marco A. Pierotti and Silvana Pilotti are co-senior authors.

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Silvana Pilotti MD

Corresponding Author

Silvana Pilotti MD

Department of Pathology, Unit of Experimental Molecular Pathology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Via Venezian 1, 20133 Milano. Italy

Marco A. Pierotti and Silvana Pilotti are co-senior authors.

Department of Pathology, Unit of Experimental Molecular Pathology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Via Venezian 1, 20133 Milano. ItalySearch for more papers by this author
First published: 08 September 2006
Citations: 34

Abstract

Background.

Intestinal-type adenocarcinoma (ITAC) of the nasal cavity and paranasal sinuses shows microscopic features indistinguishable from colorectal cancer. Our aim was to verify whether the morphologic resemblances mirror genetic profile similarities.

Methods.

Twenty consecutive surgically treated ITAC cases, previously investigated for p16INK4a and TP53, were investigated for hMLH1, hMSH2, and β-catenin immunoreactivity, and for adenomatous polyposis coli (APC), K-ras, and BRAF gene mutations.

Results.

One case was immunonegative for both hMLH1 and hMSH2, and 12 tumors (40%) revealed a strong β-catenin overexpression. No BRAF and APC truncating mutations were identified, whereas K-ras mutations were detected in 9 ITACs (50%).

Conclusions.

Our data confirm the phenotypic similarities at the genetic level between colorectal cancer and ITACs showing deregulation of K-Ras/BRAF and loss of heterozygosity (LOH) of chromosome 18q. By contrast, both frequency rate and type of inactivation of the APC-β-catenin pathway differ in the 2 tumors, suggesting different gatekeeper events in the early development of ITAC (p16INK4a and TP53) and colorectal cancer (APC). © 2006 Wiley Periodicals, Inc. Head Neck, 2006

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