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Leuk Lymphoma. 2011 Aug;52(8):1495-503. doi: 10.3109/10428194.2011.573032. Epub 2011 May 31.

Prognostic impact of MUM1 expression by immunohistochemistry on primary mediastinal large B-cell lymphoma.

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  • 1Department of Medical Oncology, Hospital AC Camargo, Sao Paulo, SP, Brazil. celso.almello@gmail.com

Abstract

Diffuse large B-cell lymphoma can be classified into two prognostically distinct subgroups with germinal center B-cell-like (CG) and activated B-cell-like (post-CG) characteristics, based on CD10, BCL-6, and MUM1 expression. We performed a retrospective analysis of the clinical variables of 37 patients with primary mediastinal large B-cell lymphoma and the expression of BCL-6 and MUM1 in 22 patients with available tissue. The median age was 30 years, and 70% of the patients were female. BCL-6 and MUM1 were expressed in 64% and 45% of cases, respectively. Five-year overall survival (OS) and disease-free survival (DFS) were 47% and 81%, respectively. In univariate analysis, complete response (p = 0.0001), radiation therapy (p = 0.01), International Prognostic Index (p = 0.001), and MUM1 expression (p = 0.002) correlated with OS. For this group of patients with homogeneous clinical characteristics, response to initial chemotherapy and MUM1 expression were associated with prognosis.

PMID:
21623692
[PubMed - indexed for MEDLINE]
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