Home Neoplasma 2010 Neoplasma Vol.57, No.5, p.449-454, 2010

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Founded: 1954
ISSN 0028-2685
ISSN 1338-4317 (online)

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Neoplasma Vol.57, No.5, p.449-454, 2010

Title: Distinguishing of primary mediastinal B-cell lymphoma and diffuse large B-cell lymphoma using real-time quantitative polymerase chain reaction
Author: H. Votavova, K. Forsterova, V. Campr, J. Sritesky, Z. Velenska, R. Pytlik, K. Kubackova, B. Prochazka, R. Kodet, I. Spicka, H. Krejcova, M. Trneny, P. Klener

Abstract: Primary mediastinal B-cell lymphoma (PMBL) seems to be reliably distinguished from diffuse large B-cell lymphoma (DLBCL) with microarray technology. We measured expression of Fcer2, Pdl2 and Blk genes using real-time quantitative polymerase chain reaction (RTqPCR) on formalin fixed, paraffin embedded material (FFPE) and suggested a formula to discriminate PMBL from DLBCL. For 39/82 included patients the diagnosis of PMBL was expected clinico-pathologically. Diagnosis of 10/39 and 2/43 of clinically considered PMBLs and DLBCLs, respectively, was not genetically confirmed. Compared to confirmed PMBLs, unconfirmed ones showed clinical features similar to DLBCLs, e.g. spleen infiltration (p=0,028) and decreased invasiveness in pericardium (p=0,045). They tended to have more common infradiaphragmatic involvement, less often tumor sclerosis or fluidothorax. There were no immunohistochemical differences between genetically confirmed and unconfirmed PMBLs. New approach of distinguishing PMBL and DLBCL is presented. It is based on expression of three genes in routinely available FFPE material using RTqPCR.

Keywords: Gene expression; primary mediastinal B-cell lymphoma,diffuse large B-cell lymphoma; formalin fixed, paraffin embedded tissue ; real-time quantitative polymerase chain reaction
Year: 2010, Volume: 57, Issue: 5 Page From: 449, Page To: 454

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