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01.11.2014 | Research Article

Evaluation diagnostic usefulness of immunoglobulin light chains (Igκ, Igλ) and incomplete IGH D-J clonal gene rearrangements in patients with B-cell non-Hodgkin lymphomas using BIOMED-2 protocol

Erschienen in: Clinical and Translational Oncology | Ausgabe 11/2014

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Abstract

Purpose

Evaluation diagnostic usefulness of immunoglobulin light chains (Igκ, Igλ) and incomplete IGH D-J clonal gene rearrangements in formalin-fixed, paraffin-embedded (FFPE) tissue of patients with B-cell non-Hodgkin lymphomas (B-NHL).

Materials and methods

This study was performed on samples from 70 patients with B-NHL, including two cases of follicular lymphoma (FL), 20 cases of diffuse large B-cell lymphoma (DLBCL), one case of mantle cell lymphoma (MCL), and 47 cases of B-cell neoplasm (non-classified), which had been previously assessed for complete IGH clonality, and failure to clarify gene rearrangements. We used a gold standard multiplex PCR protocol provided by European Biomedicine and Health (BIOMED-2) Concerted Action Project BMH4-CT98-3936 for improvement of diagnosis and analysis of clonality gene rearrangement in lymphoma malignancies.

Results

Our results revealed a total positive monoclonality of 89 % (62/70) in Igκ, Igλ, and 11.4 % (8/70) polyclonality in gene rearrangements assay. The samples with positive clonality consisting (Igκ: 45 %, Igλ: 55 %) in DLBCL, (Igκ: 100 %) in FL, (Igλ: 100 %) in MCL, and (Igκ: 47 %, Igλ: 36 %) in B-cell neoplasm non-classified. None of the incomplete IGH D–J immunoglobulin gene families (0 %) showed monoclonality, and all samples demonstrated polyclonality pattern.

Conclusions

Our findings on FFPE tissue revealed that immunoglobulin light chains clonality gene rearrangements assays using BIOMED-2 protocol, could be considered a valuable and reliable method for clonality detection, particularly in cases of failure of complete IGH gene rearrangements analysis. Clonal Ig gene rearrangements assay is applicable for routine diagnostic testing of lymphoproliferative disorders and as a reliable method for differentiating between malignant and benign lymphoma disorders.

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Titel: Evaluation diagnostic usefulness of immunoglobulin light chains (Igκ, Igλ) and incomplete IGH D-J clonal gene rearrangements in patients with B-cell non-Hodgkin lymphomas using BIOMED-2 protocol
Publikationsdatum: 01.11.2014
Erschienen in: Clinical and Translational Oncology / Ausgabe 11/2014
Print ISSN: 1699-048X
Elektronische ISSN: 1699-3055
DOI: https://doi.org/10.1007/s12094-014-1188-4

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Springer Medizin

Evaluation diagnostic usefulness of immunoglobulin light chains (Igκ, Igλ) and incomplete IGH D-J clonal gene rearrangements in patients with B-cell non-Hodgkin lymphomas using BIOMED-2 protocol

Abstract

Purpose

Materials and methods

Results

Conclusions

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Springer Medizin

Abstract

Purpose

Materials and methods

Results

Conclusions

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Neu im Fachgebiet Onkologie

Bei Senioren mit Prostatakarzinom auf Anämie achten!

ICI-Therapie in der Schwangerschaft wird gut toleriert

Krebspatienten impfen: Was? Wen? Und wann nicht?

Müde im Alter? Auch an die Nebenniere denken

Update Onkologie