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Published in: International Journal of Hematology 6/2015

01-12-2015 | Original Article

High expression of REV7 is an independent prognostic indicator in patients with diffuse large B-cell lymphoma treated with rituximab

Authors: Sosei Okina, Nobuyuki Yanagisawa, Maki Yokoyama, Yasutaka Sakurai, Yoshiko Numata, Atsuko Umezawa, Masaaki Higashihara, Yoshiki Murakumo

Published in: International Journal of Hematology | Issue 6/2015

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Abstract

REV7 is a multifunctional protein involved in DNA damage tolerance, cell-cycle regulation, gene expression, and carcinogenesis. Although its expression is reportedly associated with poor prognosis in human solid tissue cancers, the significance of REV7 expression in hematopoietic malignancies is unclear. This study evaluated the prognostic significance of REV7 expression in patients with diffuse large B-cell lymphoma (DLBCL) treated with rituximab-combined chemotherapy. Using immunohistochemistry, we analyzed 83 specimens of de novo DLBCL [38 germinal center B-cell-like (GCB) and 45 non-GCB DLBCLs] treated with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone for REV7 expression. Aberrant REV7 expression was detected in DLBCL cell nuclei. High REV7 expression was associated with significantly shorter overall survival (OS) and progression-free survival (PFS) using Kaplan–Meier analysis and log-rank tests (P < 0.01 and P < 0.01, respectively). Multivariate analysis revealed that REV7 expression is an independent prognostic factor for both OS and PFS. Additionally, when patients were divided into four groups using a combination of REV7 expression and international prognostic index (IPI) or Bcl-2 expression, REV7High/IPIPoor and REV7High/Bcl-2High patients showed the poorest outcome. These results indicate that REV7 may be a useful biomarker to predict the prognosis of patients with DLBCL treated with rituximab.
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Metadata
Title
High expression of REV7 is an independent prognostic indicator in patients with diffuse large B-cell lymphoma treated with rituximab
Authors
Sosei Okina
Nobuyuki Yanagisawa
Maki Yokoyama
Yasutaka Sakurai
Yoshiko Numata
Atsuko Umezawa
Masaaki Higashihara
Yoshiki Murakumo
Publication date
01-12-2015
Publisher
Springer Japan
Published in
International Journal of Hematology / Issue 6/2015
Print ISSN: 0925-5710
Electronic ISSN: 1865-3774
DOI
https://doi.org/10.1007/s12185-015-1880-3

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