A study on nm23-H1 expression in diffuse large B-cell lymphoma that was treated with CyclOBEAP plus rituximab therapy

Nozomi Niitsu, Jun Ichi Tamaru, Tadashi Yoshino, Naoya Nakamura, Shigeo Nakamura, Kohichi Ohshima, Hirokazu Nakamine, Masataka Okamoto

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Abstract

In our previous study on nm23-H1 expression with diffuse large B-cell lymphoma (DLBCL), we found that patients with positive nm23-H1 had significantly poorer prognosis than patients with negative nm23-H1. We examined whether nm23-H1 is a prognostic factor of DLBCL in the rituximab era. The subjects were 101 DLBCL patients who underwent R-CyclOBEAP (rituximab, cyclophosphamide, vincristine, bleomycin, etoposide, doxorubicin, and prednisolone) therapy and in whom markers could be analyzed. We evaluated CD5, CD10, BCL2, BCL6, MUM1, and nm23-H1 expression by immunohistochemistry. Ninety-four DLBCL patients who underwent CyclOBEAP therapy were assumed as historical controls. Among DLBCL patients who underwent CyclOBEAP therapy, BCL2 positivity, MUM1 positivity, non-germinal center B-cell (non-GCB), and nm23-H1 positivity were associated with significantly shorter overall survival (OS) and progression-free survival (PFS). On the other hand, among DLBCL patients who underwent R-CyclOBEAP therapy, the 5-year OS rates of the nm23-H1-positive DLBCL (n = 32) and nm23-H1-negative DLBCL groups (n = 69) were 65% and 97%, respectively (p = 0.001), with 5-year PFS rates of 51% and 89%, respectively (p = 0.001). In the rituximab era, BCL2, MUM1, and non-GCB were not prognostic factors. We demonstrated that among patients with DLBCL who underwent R-CyclOBEAP therapy, patients with nm23-H1 expression had a significantly poorer prognosis than patients without nm23-H1 expression. These results suggest an important role for nm23-H1 in malignant progression and a potential therapeutic target for DLBCL.

Original languageEnglish
Pages (from-to)185-192
Number of pages8
JournalAnnals of Hematology
Volume90
Issue number2
DOIs
Publication statusPublished - 01-02-2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Hematology

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    Niitsu, N., Tamaru, J. I., Yoshino, T., Nakamura, N., Nakamura, S., Ohshima, K., Nakamine, H., & Okamoto, M. (2011). A study on nm23-H1 expression in diffuse large B-cell lymphoma that was treated with CyclOBEAP plus rituximab therapy. Annals of Hematology, 90(2), 185-192. https://doi.org/10.1007/s00277-010-1060-8