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Expression of p53, c-Myc, or Bcl-6 suggests a poor prognosis in primary central nervous system diffuse large B-cell lymphoma among immunocompetent individuals. Arch Pathol Lab Med 2003 Feb;127(2):208-12 PMID: 12562237

Pubmed ID

12562237

Abstract

CONTEXT: Primary central nervous system (CNS) diffuse large B-cell lymphoma (DLBCL) in immunocompetent individuals, although rare, has been rising in incidence. Currently, no reliable prognostic markers are available for these individuals.

OBJECTIVE: To study the implications of expression of a panel of oncogenic proteins (Bcl-2, Bcl-6, and c-Myc) and p53 for predicting clinical outcome, particularly overall survival, in immunocompetent individuals with primary CNS DLBCL.

DESIGN: Fourteen primary CNS DLBCL cases were retrospectively studied by immunohistochemistry on formalin-fixed, paraffin-embedded sections for the expression of c-Myc, Bcl-2, Bcl-6, and p53.

RESULTS: The overall frequencies of expression for p53, c-Myc, Bcl-2, and Bcl-6 in these cases were 29%, 50%, 71%, and 57%, respectively. Cases with expression of p53, c-Myc, or Bcl-6 had a poorer overall survival than those without (Kaplan-Meier survival analysis: 50% cumulative overall survival, 2 months vs 30-60 months, P =.02, log-rank test; 9-16 months vs 21-60 months, P =.03, log-rank test; and 9-16 months vs 21-60 months, P =.16, log-rank test, respectively). The expression of Bcl-2 or proliferation activity by MIB-1 showed no correlation with overall survival. Likewise, the clinical parameters, including age, location of tumors, multiplicity of tumor lesions, and lactase dehydrogenase levels revealed no impact on overall survival.

CONCLUSION: Our results suggest that patients with expression of p53, c-Myc, or Bcl-6 have a poorer overall survival than those without. Since traditional prognostic markers in non-CNS DLBCL, such as staging and International Prognostic Index scores, are not applicable to primary CNS DLBCL, evaluation of p53, c-Myc, and Bcl-6 by immunohistochemistry may be warranted as part of prognostic evaluation in immunocompetent patients with primary CNS DLBCL. Further studies are indicated to confirm our observations.

Author List

Chang CC, Kampalath B, Schultz C, Bunyi-Teopengco E, Logan B, Eshoa C, Dincer AP, Perkins SL

Authors

Brent R. Logan PhD Director, Professor in the Institute for Health and Equity department at Medical College of Wisconsin
Christopher J. Schultz MD Chair, Professor in the Radiation Oncology department at Medical College of Wisconsin




Scopus

2-s2.0-0037329971   59 Citations

MESH terms used to index this publication - Major topics in bold

Adult
Aged
Aged, 80 and over
Biomarkers, Tumor
Central Nervous System Neoplasms
DNA-Binding Proteins
Female
Formaldehyde
Humans
Immunocompetence
Immunohistochemistry
Lymphoma, B-Cell
Lymphoma, Large B-Cell, Diffuse
Male
Middle Aged
Paraffin Embedding
Prognosis
Proto-Oncogene Proteins
Proto-Oncogene Proteins c-bcl-6
Proto-Oncogene Proteins c-myc
Retrospective Studies
Survival Analysis
Tissue Fixation
Transcription Factors
Tumor Suppressor Protein p53
jenkins-FCD Prod-299 9ef562391eceb2b8f95265c767fbba1ce5a52fd6