title: Molecular analysis of the IgH gene in 212 cases of Hodgkin's disease: correlation of IgH clonality with the histologic and the immunocytochemical features.
abstract: The aims of this study are to evaluate the frequency of clonal immunoglobulin heavy chain gene rearrangements in paraffin-embedded samples of Hodgkin's disease (HD) with use of the polymerase chain reaction method and to correlate the molecular findings with the histologic and immunocytochemical features. DNA extracts from paraffin-embedded sections from 212 HD samples were used for amplification of the IgH gene by use of framework 2 and framework 3 region primers. Immunohistochemical studies were performed on paraffin sections by use of monoclonal antibodies for CD20 and latent membrane protein-1 and polyclonal antibody for CD3. With use of both primer combinations, monoclonality was detected in 18.7% of lymphocyte-predominant HD cases and in 32.2% of classical HD cases. These results suggest that immunoglobulin heavy chain gene clonal rearrangements are relatively frequent in classical HD. In addition, the statistical analyses of the genotypic and immunocytochemical data revealed that the detection of B-cell populations is significantly associated with the expression of CD20 on HRS cells. There was, however, no correlation between the histologic subtype, the percentage of HRS cells, the presence of latent membrane protein-1 expression, and the molecular analysis results.
authors.affiliation: Department of Pathology, Hospital Ramón y Cajal, Universidad Alcalá de Henares, Madrid, Spain.
authors.forename: A I
authors.initials: AI
authors.lastname: Manzanal
authors.forename: A
authors.initials: A
authors.lastname: Santón
authors.forename: A
authors.initials: A
authors.lastname: Acevedo
authors.forename: B
authors.initials: B
authors.lastname: Aguilera
authors.forename: H
authors.initials: H
authors.lastname: Oliva
authors.forename: C
authors.initials: C
authors.lastname: Bellas
mesh_terms: D018951:Antigens, CD20 / Q000032:analysis; D000956:Antigens, Viral / Q000378:metabolism; D001402:B-Lymphocytes / Q000276:immunology; D001706:Biopsy; D017252:CD3 Complex / Q000032:analysis; D002999:Clone Cells / Q000276:immunology; D015321:Gene Rearrangement; D005803:Genes, Immunoglobulin; D006689:Hodgkin Disease / Q000235:genetics* / Q000378:metabolism; D006801:Humans; D007143:Immunoglobulin Heavy Chains / Q000235:genetics*; D007150:Immunohistochemistry; D016130:Immunophenotyping; D008198:Lymph Nodes / Q000378:metabolism / Q000473:pathology; D016131:Lymphocyte Subsets / Q000276:immunology*; D008215:Lymphocytes, Null / Q000276:immunology; D015999:Multivariate Analysis; D016539:Reed-Sternberg Cells / Q000166:cytology; D013601:T-Lymphocytes / Q000276:immunology; D014763:Viral Matrix Proteins / Q000378:metabolism
chemical_list: D018951:Antigens, CD20; D000956:Antigens, Viral; D017252:CD3 Complex; C037662:EBV-associated membrane antigen, Epstein-Barr virus; D007143:Immunoglobulin Heavy Chains; D014763:Viral Matrix Proteins