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Diffuse large B-cell lymphoma subgroups have distinct genetic profiles that influence tumor biology and improve gene-expression-based survival prediction.
| Content Provider | Scilit |
|---|---|
| Author | Beà, Sílvia Zettl, Andreas Wright, George Salaverría, Itziar Jehn, Philipp Moreno, Victor Burek, Christof Ott, German Puig, Xavier Yang, Liming López-Guillermo, Armando Chan, Wing C. Greiner, Timothy C. Weisenburger, Dennis D. Armitage, James O. Gascoyne, Randy D. Connors, Joseph M. Grogan, Thomas M. Braziel, Rita Fisher, Richard I. Smeland, Erlend B. Kvaloy, Stein Holte, Harald Delabie, Jan Simon, Richard Powell, John Wilson, Wyndham H. Jaffe, Elaine S. Montserrat, Emili Müller-Hermelink, Hans-Konrad Staudt, Louis M. Campo, Elías Rosenwald, Andreas |
| Copyright Year | 2005 |
| Description | Gene-expression profiling has identified 3 major subgroups of diffuse large B-cell lymphoma (DLBCL): germinal center B-cell-like (GCB), activated B-cell-like (ABC), and primary mediastinal DLBCL (PMBCL). Using comparative genomic hybridization (CGH), we investigated the genetic alterations of 224 cases of untreated DLBCL (87 GCB-DLBCL, 77 ABC-DLBCL, 19 PMBCL, and 41 unclassified DLBCL) previously characterized by gene-expression profiling. The DLBCL subgroups differed significantly in the frequency of particular chromosomal aberrations. ABC-DLBCL had frequent trisomy 3, gains of 3q and 18q21-q22, and losses of 6q21-q22, whereas GCB-DLBCL had frequent gains of 12q12, and PMBCL had gains of 9p21-pter and 2p14-p16. Parallel analysis of CGH alterations, locus-specific gene-expression profiles, and global gene-expression signatures revealed that DNA amplifications and gains had a substantial impact on the expression of genes in the involved chromosomal regions, and some genes were overexpressed in a DLBCL subgroup-specific fashion. Unexpectedly, specific chromosomal alterations were associated with significant changes in gene-expression signatures that reflect various aspects of lymphoma cell biology as well as the host response to the lymphoma. In addition, gains involving the chromosomal region 3p11-p12 provided prognostic information that was statistically independent of the previously defined gene-expression-based survival model, thereby improving its predictive power. |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1895326/pdf |
| Ending Page | 3190 |
| Page Count | 8 |
| Starting Page | 3183 |
| DOI | 10.1182/blood-2005-04-1399 |
| Journal | Blood |
| Issue Number | 9 |
| Volume Number | 106 |
| Language | English |
| Publisher | American Society of Hematology |
| Publisher Date | 2005-11-01 |
| Access Restriction | Open |
| Subject Keyword | Hematology Diffuse Large B Cell Lymphoma Biology Hybridization Gene Expression Profiling Predictive Dlbcl P16 Journal: Blood (Vol- 109, Issue- 9) |
| Content Type | Text |
| Resource Type | Article |
