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- W2600372273 abstract "// Naoko Tsuyama 1 , Daisuke Ennishi 2 , Masahiro Yokoyama 3 , Satoko Baba 4 , Reimi Asaka 1, 4 , Yuko Mishima 3 , Yasuhito Terui 3 , Kiyohiko Hatake 3 and Kengo Takeuchi 1, 4 1 Division of Pathology, The Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan 2 Department of Hematology, Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan 3 Department of Hematology Oncology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan 4 Pathology Project for Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan Correspondence to: Kengo Takeuchi, email: kentakeuchi-tky@umin.net Keywords: diffuse large B-cell lymphoma, CD5, CD8, aberrant expression, T-cell marker Received: October 20, 2016 Accepted: February 28, 2017 Published: March 23, 2017 ABSTRACT Expression of T-cell markers, generally investigated for immunophenotyping of T-cell lymphomas, is also observed in several types of B-cell lymphomas, including diffuse large B-cell lymphoma (DLBCL). We previously reported that CD5 expression in DLBCL is an inferior prognostic factor in the era of rituximab. However, data regarding the frequencies, histological relevance, and prognostic importance of T-cell markers other than CD5 are currently unavailable. In the present study, we comprehensively evaluated the expression of T-cell markers (CD2, CD3, CD4, CD5, CD7, and CD8) in 501 B-cell lymphomas, including 225 DLBCLs, by flow cytometry and subsequent immunohistochemistry. T-cell markers other than CD5, such as CD2, CD4, CD7, and CD8, were expressed in 27 (5%) patients, and notably, all of these cases were classified as large B-cell lymphoma subtypes: 25 DLBCLs and 2 intravascular large B-cell lymphomas. CD5 and other T-cell markers were expressed in 15% (31/225) and 10% (25/225) of DLBCL cases, respectively. Five of them co-expressed CD5 and other T-cell markers. Retrospectively analyzing the prognostic relevance of T-cell markers in 169 patients with primary DLBCL treated with rituximab-based chemotherapy, we showed that only CD5 was a strong predictor of poor survival. This study provides information about the occurrence of T-cell markers other than CD5 in B-cell lymphomas, their frequent histological subtypes, and their prognostic significance in DLBCL. CD5 was reconfirmed as a negative prognostic marker in DLBCL patients receiving rituximab-inclusive chemotherapy, whereas T-cell markers other than CD5 were found to have no impact on clinicopathological and survival analyses." @default.
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- W2600372273 date "2017-03-23" @default.
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- W2600372273 title "Clinical and prognostic significance of aberrant T-cell marker expression in 225 cases of<i>de novo</i>diffuse large B-cell lymphoma and 276 cases of other B-cell lymphomas" @default.
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- W2600372273 doi "https://doi.org/10.18632/oncotarget.16532" @default.
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