title: Array comparative genomic hybridization reveals similarities between nodular lymphocyte predominant Hodgkin lymphoma and T cell/histiocyte rich large B cell lymphoma.
abstract: Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) and T cell/histiocyte rich large B cell lymphoma (THRLBCL) usually affect middle-aged men, show tumour cells with a B cell phenotype and a low tumour cell content. Whereas the clinical behaviour of NLPHL is indolent, THRLBCL presents with advanced stage disease and an aggressive behaviour. In the present study, array comparative genomic hybridization was performed in seven typical NLPHL, four THRLBCL-like NLPHL variants, six THRLBCL and four diffuse large B cell lymphomas (DLBCL) derived from NLPHL. The number of genomic aberrations was higher in THRLBCL compared with typical and THRLBCL-like variant of NLPHL. Gains of 2p16.1 and losses of 2p11.2 and 9p11.2 were commonly observed in typical and THRLBCL-like variants of NLPHL as well as THRLBCL. Gains of 2p16.1, affecting the REL locus were confirmed in an independent cohort. Expression of the REL protein was observed at similar frequencies in typical and THRLBCL-like variant of NLPHL as well as THRLBCL (33-38%). In conclusion, the present study reveals further similarities between NLPHL and THRLBCL on the genomic level, confirming that these entities are part of a pathobiological spectrum with common molecular features, but varying clinical presentations.
authors: Dr. Senckenberg Institute of Pathology, Goethe University, Frankfurt am Main, Germany.
authors: Sylvia
authors: S
authors: Hartmann
authors: Claudia
authors: C
authors: Döring
authors: Emily
authors: E
authors: Vucic
authors: Fong Chun
authors: FC
authors: Chan
authors: Daisuke
authors: D
authors: Ennishi
authors: Thomas
authors: T
authors: Tousseyn
authors: Christiane
authors: C
authors: de Wolf-Peeters
authors: Sven
authors: S
authors: Perner
authors: Iwona
authors: I
authors: Wlodarska
authors: Christian
authors: C
authors: Steidl
authors: Randy D
authors: RD
authors: Gascoyne
authors: Martin-Leo
authors: ML
authors: Hansmann
mesh_terms: D002869:Chromosome Aberrations; D002874:Chromosome Mapping; D055028:Comparative Genomic Hybridization; D006644:Histiocytes / Q000378:metabolism / Q000473:pathology; D006689:Hodgkin Disease / Q000235:genetics* / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D017404:In Situ Hybridization, Fluorescence; D016403:Lymphoma, Large B-Cell, Diffuse / Q000235:genetics* / Q000378:metabolism / Q000473:pathology*; D020569:Proto-Oncogene Proteins c-rel / Q000235:genetics / Q000378:metabolism; D015203:Reproducibility of Results; D013601:T-Lymphocytes / Q000378:metabolism / Q000473:pathology
chemical_list: D020569:Proto-Oncogene Proteins c-rel
keywords: T cell/histiocyte rich large B cell lymphoma; array classic comparative genomic hybridization; nodular lymphocyte predominant Hodgkin lymphoma