title: [Assessment of BIOMED-2 assays for detection of clonal Ig gene rearrangements in mature B-cell lymphomas].
abstract: OBJECTIVE
  To evaluate the efficiency of the BIOMED-2 PCR assay and its implication in the diagnosis of mature B-cell non-Hodgkin's lymphomas.
  
  
  METHODS
  Clinical, morphological and immunohistochemical features of 72 cases of non-Hodgkin's lymphomas were studied, including 25 reactive lymphoid hyperplasia, 37 diffuse large B cell lymphomas (DLBCL) and 35 extranodal marginal zone lymphomas of mucosa associated lymphoid tissues (MALT lymphoma and in addition, 25 cases of reactive lymphoid hyperplasia were used as the controls). DNA was exacted from the paraffin embedded formalin fixed tissue blocks and the quality of DNA was assessed using the BIOMED-2 specimen control reaction. Adequate samples were then analyzed by BIOMED-2 for immunoglobulin heavy and kappa light chain rearrangements.
  
  
  RESULTS
  Adequate DNA was obtained in 83 of 97 samples, including 60 mature B cell lymphomas and 23 reactive lymphoid hyperplasia. Clonal B-cell gene rearrangements were detected in 57 of 60 (95%) lymphomas. In contrast, clonal Ig gene rearrangements were not detected in any of the 23 cases of reactive lymphoid hyperplasia.
  
  
  CONCLUSIONS
  BIOMED-2 assay is highly sensitive and specific for the detection of clonal B cell gene rearrangement using routine paraffin embedded formalin fixed specimens.
authors.affiliation: Department of Pathology, Basic Medical College, Capital Medical University, Beijing 100069, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Ying-hui
authors.initials: YH
authors.lastname: Wu
authors.forename: Hai-ying
authors.initials: HY
authors.lastname: Kong
authors.forename: Xiao-ge
authors.initials: XG
authors.lastname: Zhou
authors.forename: Ha-si
authors.initials: HS
authors.lastname: Jin
authors.forename: Xiao-ming
authors.initials: XM
authors.lastname: Wu
authors.forename: Dan-dan
authors.initials: DD
authors.lastname: Zhang
authors.forename: Li-ping
authors.initials: LP
authors.lastname: Gong
mesh_terms: D018951:Antigens, CD20 / Q000378:metabolism; D051925:CD79 Antigens / Q000378:metabolism; D004273:DNA, Neoplasm / Q000235:genetics; D015322:Gene Rearrangement, B-Lymphocyte / Q000235:genetics*; D015326:Gene Rearrangement, B-Lymphocyte, Heavy Chain / Q000235:genetics; D015328:Gene Rearrangement, B-Lymphocyte, Light Chain / Q000235:genetics; D005803:Genes, Immunoglobulin; D006801:Humans; D016130:Immunophenotyping; D016393:Lymphoma, B-Cell / Q000235:genetics* / Q000276:immunology / Q000473:pathology; D018442:Lymphoma, B-Cell, Marginal Zone / Q000235:genetics / Q000276:immunology / Q000473:pathology; D016403:Lymphoma, Large B-Cell, Diffuse / Q000235:genetics* / Q000276:immunology / Q000473:pathology; D016612:Paraffin Embedding; D019310:Pseudolymphoma / Q000235:genetics / Q000276:immunology / Q000473:pathology; D012680:Sensitivity and Specificity
chemical_list: D018951:Antigens, CD20; D051925:CD79 Antigens; D004273:DNA, Neoplasm