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p53 Nuclear Expression Correlates With Hemizygous TP53 Deletion and Predicts an Adverse Outcome for Patients With Relapsed/Refractory Multiple Myeloma Treated With Lenalidomide.
MedLine Citation:
PMID:  22261445     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
del(17p13)(TP53) seems to be an independent poor prognostic factor in patients with relapsed/refractory multiple myeloma (MM) receiving lenalidomide. However, whether aberrant p53 nuclear expression detected by immunohistochemical analysis can be used as a surrogate marker for del(17p13)(TP53) in prognostic evaluation of lenalidomide-treated relapsed/refractory MM remains unclear. The p53 expression in myeloma cells from 88 patients was evaluated by immunohistochemical analysis, and 17p13(TP53) gene status was examined by fluorescence in situ hybridization (FISH). FISH detected hemizygous del(17p13)(TP53) in 13 (15%), and immunohistochemical analysis detected p53 nuclear expression in 11 cases (13%). del(17p13) (TP53) and p53 expression were strongly correlated (P < .0001). Furthermore, patients with aberrant p53 nuclear expression had significantly shorter progression-free and overall survival than patients without this abnormality. Our results suggest that p53 nuclear expression is associated with adverse outcome in patients with relapsed/refractory MM receiving lenalidomide-based therapy and that p53 immunohistochemical analysis may serve as a simple, rapid method to predict del(17p13)(TP53) in this patient subgroup.
Authors:
Mei-Hsi Chen; Connie X Y Qi; Manujendra N Saha; Hong Chang
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of clinical pathology     Volume:  137     ISSN:  1943-7722     ISO Abbreviation:  Am. J. Clin. Pathol.     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-01-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370470     Medline TA:  Am J Clin Pathol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  208-12     Citation Subset:  AIM; IM    
Affiliation:
Dept of Laboratory Hematology, University Health Network, 200 Elizabeth St, 11E-413, Toronto, ON, M5G 2C4.
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