title: Analysis of immunoglobulin and T cell receptor gene rearrangement in the bone marrow of lymphoid neoplasia using BIOMED-2 multiplex polymerase chain reaction.
abstract: The evaluation of bone marrow (BM) involvement is important for diagnosis and staging in patients with lymphoid neoplasia. We evaluated of immunoglobulin (Ig) and/or T-cell receptor (TCR) gene rearrangements in the BM using the standardized BIOMED-2 multiplex PCR clonality assays and compared the results with microscopic findings such as histology and CD10, CD20, CD79a, CD3 and CD5 immunohistochemistry. A total of 151 samples were enrolled; 119 B cell neoplasia, 29 T cell neoplasia, and 3 Hodgkin's lymphoma. The molecular clonality assay and microscopic diagnosis were concordant in 66.9% (n=101) and discordant in 33.1 % (n=50). Ig/TCR gene clonality assay detected 43 cases of BM involvement which was not presented in the morphology. Two cases among them turned into microscopic BM involvement during a close follow up. Clonal TCR gene rearrangements were detected in 12.6% of B cell neoplasia and Ig gene rearrangement were found in 3.4% of T cell neoplasia. This molecular clonality assay is valuable particularly in diagnosing BM involvement of lymphoid neoplasia if it is morphologically uncertain. But it should be carefully interpreted because molecular clonality may be present in the reactive lymphoproliferation. Therefore, comprehensive analysis with morphologic analysis should be important to reach a final diagnosis.
authors.affiliation: 1. Department of Laboratory Medicine, The Catholic University of Korea, College of Medicine, Seoul, Korea;
authors.forename: Soyoung
authors.initials: S
authors.lastname: Shin
authors.forename: Ah Hyun
authors.initials: AH
authors.lastname: Kim
authors.forename: Joonhong
authors.initials: J
authors.lastname: Park
authors.forename: Myungshin
authors.initials: M
authors.lastname: Kim
authors.forename: Jihyang
authors.initials: J
authors.lastname: Lim
authors.forename: Yonggoo
authors.initials: Y
authors.lastname: Kim
authors.forename: Kyungja
authors.initials: K
authors.lastname: Han
authors.forename: Sun Ah
authors.initials: SA
authors.lastname: Lee
authors.forename: Seok-Goo
authors.initials: SG
authors.lastname: Cho
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001853:Bone Marrow / Q000378:metabolism*; D005260:Female; D006801:Humans; D007136:Immunoglobulins / Q000235:genetics / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D060885:Multiplex Polymerase Chain Reaction; D011948:Receptors, Antigen, T-Cell / Q000235:genetics / Q000378:metabolism*; D055815:Young Adult
chemical_list: D007136:Immunoglobulins; D011948:Receptors, Antigen, T-Cell
keywords: BIOMED-2 multiplex PCR.; immunoglobulin (Ig) /T-cell receptor (TCR) gene rearrangements
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