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  • Title: Effect of positive bone marrow EBV in situ hybridization in staging and survival of localized extranodal natural killer/T-cell lymphoma, nasal-type.
    Author: Lee J, Suh C, Huh J, Jun HJ, Kim K, Jung C, Park K, Park YH, Ko YH, Kim WS.
    Journal: Clin Cancer Res; 2007 Jun 01; 13(11):3250-4. PubMed ID: 17545530.
    Abstract:
    PURPOSE: The aim of the study was to determine the effect of EBV-encoded RNA-1 in situ hybridization (EBER-1 ISH) in bone marrow specimens on survival outcome in patients with clinical stage I/II natural killer/T-cell lymphoma. EXPERIMENTAL DESIGN: We systematically did EBER-1 ISH on 182 archival bone marrow tissues from 91 patients who were diagnosed of stage I/II natural killer/T-cell lymphoma and analyzed the correlation between bone marrow EBER-1 ISH status and survival. We defined minimal bone marrow involvement and definite bone marrow involvement to distinguish the subgroups who revealed EBV-positive cells from normal marrow by EBER-1 ISH from those who showed typical neoplastic cells in bone marrow biopsies. RESULTS: In total, 17 of the 91 (18.7%) patients showed positivity for EBER-1 ISH at least in one of the bilateral bone marrow biopsies with 14 minimal bone marrow involvements and 3 definite bone marrow involvements. Patients with positive bone marrow EBER-1 ISH showed significantly poorer overall survival than those who were negative for bone marrow EBER-1 ISH (median survival, 16.1 months versus not reached; P = 0.045). CONCLUSION: Considering a high proportion of stage I/II patients (15.4%) with minimal in bone marrow specimens, bone marrow EBER-1 ISH should be routinely done in all patients with localized disease for more accurate staging.
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