NF-κB activation through the alternative pathway correlates with chemoresistance and poor survival in extranodal NK/T-cell lymphoma, nasal type
Japanese Journal of Clinical Oncology, ISSN: 0368-2811, Vol: 39, Issue: 7, Page: 418-424
2009
- 35Citations
- 23Captures
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Metrics Details
- Citations35
- Citation Indexes35
- 35
- CrossRef29
- Captures23
- Readers23
- 23
Article Description
Objective: Nuclear factor-κB (NF-κB) activation has been identified in a variety of solid tumors and lymphoid malignancies. The aim of our study was to determine the expression status and clinical significance of NF-κB in extranodal natural killer (NK)/T-cell lymphoma, nasal type. Methods: Tumor specimens from 23 patients with previously untreated NK/T-cell lymphoma initially treated with cyclophosphamide, vincristine, doxorubicin and prednisone (CHOP) or CHOP-based chemotherapy were examined by immunohistochemistry for three NF-κB subunits (p65, p50 and p52), which are involved in either the canonical or alternative pathway. Results: None of the cases could be detected with p65 or p50 nuclear staining. On the other hand, 15 (65.2%) cases had p52 nuclear staining, suggesting NF-κB activation through the alternative pathway. All major clinical characteristics were balanced between NF-κB p52-positive and -negative patients. The objective response rate achieved in NF-κB-positive patients was significantly lower than that in negative patients (33.3% vs. 87.5%, P + 0.027). At a median follow-up of 25 months, 8 (53.3%) of 15 NF-κB-positive patients had died compared with none of 8 NF-κB-negative patients (P = 0.041). In a multivariate analysis, NF-κB status and stage were identified to be independent prognostic factors. Conclusions: Our results suggest that NF-κB activation through the alternative pathway is frequently observed in NK/T-cell lymphoma and associated with chemoresistance and poor survival. © The Author (2009). Published by Oxford University Press. All rights reserved.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=67650002013&origin=inward; http://dx.doi.org/10.1093/jjco/hyp037; http://www.ncbi.nlm.nih.gov/pubmed/19395464; https://academic.oup.com/jjco/article-lookup/doi/10.1093/jjco/hyp037; https://dx.doi.org/10.1093/jjco/hyp037; https://academic.oup.com/jjco/article-abstract/39/7/418/845241?redirectedFrom=fulltext
Oxford University Press (OUP)
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