Concurrent expression of MYC and BCL2 in diffuse large B-cell lymphoma treated with rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone

Diffuse large B-cell lymphoma (DLBCL) is curable in 60% of patients treated with rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP). MYC translocations, with or without BCL2 translocations, have been associated with inferior survival in DLBCL. We investigated whether...

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Vydané v:Journal of clinical oncology Ročník 30; číslo 28; s. 3452
Hlavní autori: Johnson, Nathalie A, Slack, Graham W, Savage, Kerry J, Connors, Joseph M, Ben-Neriah, Susana, Rogic, Sanja, Scott, David W, Tan, King L, Steidl, Christian, Sehn, Laurie H, Chan, Wing C, Iqbal, Javeed, Meyer, Paul N, Lenz, Georg, Wright, George, Rimsza, Lisa M, Valentino, Carlo, Brunhoeber, Patrick, Grogan, Thomas M, Braziel, Rita M, Cook, James R, Tubbs, Raymond R, Weisenburger, Dennis D, Campo, Elias, Rosenwald, Andreas, Ott, German, Delabie, Jan, Holcroft, Christina, Jaffe, Elaine S, Staudt, Louis M, Gascoyne, Randy D
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States 01.10.2012
Predmet:
Adolescent
Adult
Aged
Aged, 80 and over
Antibodies, Monoclonal, Murine-Derived - therapeutic use
Antineoplastic Combined Chemotherapy Protocols - therapeutic use
Cyclophosphamide - therapeutic use
Disease-Free Survival
Doxorubicin - therapeutic use
Female
Gene Expression Profiling
Humans
Immunohistochemistry
Lymphoma, Large B-Cell, Diffuse - drug therapy
Lymphoma, Large B-Cell, Diffuse - genetics
Lymphoma, Large B-Cell, Diffuse - mortality
Male
Middle Aged
Prednisone - therapeutic use
Prognosis
Proto-Oncogene Proteins c-bcl-2 - genetics
Proto-Oncogene Proteins c-myc - genetics
Rituximab
Survival Rate
Translocation, Genetic
Vincristine - therapeutic use
Young Adult
ISSN:1527-7755, 1527-7755
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Popis
Shrnutí:Diffuse large B-cell lymphoma (DLBCL) is curable in 60% of patients treated with rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP). MYC translocations, with or without BCL2 translocations, have been associated with inferior survival in DLBCL. We investigated whether expression of MYC protein, with or without BCL2 protein expression, could risk-stratify patients at diagnosis. We determined the correlation between presence of MYC and BCL2 proteins by immunohistochemistry (IHC) with survival in two independent cohorts of patients with DLBCL treated with R-CHOP. We further determined if MYC protein expression correlated with high MYC mRNA and/or presence of MYC translocation. In the training cohort (n = 167), MYC and BCL2 proteins were detected in 29% and 44% of patients, respectively. Concurrent expression (MYC positive/BCL2 positive) was present in 21% of patients. MYC protein correlated with presence of high MYC mRNA and MYC translocation (both P < .001), but the latter was less frequent (both 11%). MYC protein expression was only associated with inferior overall and progression-free survival when BCL2 protein was coexpressed (P < .001). Importantly, the poor prognostic effect of MYC positive/BCL2 positive was validated in an independent cohort of 140 patients with DLBCL and remained significant (P < .05) after adjusting for presence of high-risk features in a multivariable model that included elevated international prognostic index score, activated B-cell molecular subtype, and presence of concurrent MYC and BCL2 translocations. Assessment of MYC and BCL2 expression by IHC represents a robust, rapid, and inexpensive approach to risk-stratify patients with DLBCL at diagnosis.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1527-7755
1527-7755
DOI:10.1200/JCO.2011.41.0985