COO and MYC/BCL2 status do not predict outcome among patients with stage I/II DLBCL: a retrospective multicenter study

Barraclough, Allison; Alzahrani, Musa; Ettrup, Marianne Schmidt; Bishton, Mark; van Vliet, Chris; Farinha, Pedro; Gould, Clare; Birch, Simone; Sehn, Laurie H.; Sovani, Vishakha; Ward, Mitchell Steven; Augustson, Bradley; Biccler, Jorne; Connors, Joseph M.; Scott, David W.; Gandhi, Maher K.; Savage, Kerry J.; El-Galaly, Tarec; Villa, Diego; Cheah, Chan Yoon

Abstract

In advanced-stage diffuse large B-cell lymphoma (DLBCL), the presence of an activated B-cell phenotype or a non–germinal center (GCB) phenotype, coexpression of MYC and BCL2 by immunohistochemistry, and the cooccurrence of MYC and BCL2 or BCL6 rearrangements are associated with inferior outcomes. It is unclear whether these variables remain prognostic in stage I/II patients. In this retrospective study, we evaluated the prognostic impact of cell of origin (COO), as well as dual-expressor (DE) status and molecular double-hit (DH) status, in stage I/II DLBCL by positron emission tomography with computed tomography (PET-CT). A total of 211 patients treated with R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone)–like regimens, with or without radiotherapy, was included. The median follow-up in the entire cohort was 4 years (range, 0.4-9.4), with estimated 4-year progression-free survival (PFS) and overall survival (OS) rates of 85% (95% confidence interval [CI], 79-89) and 88% (95% CI, 83-92), respectively. By univariable analysis, DE (PFS: hazard ratio [HR], 1.27; 95% CI, 0.58-2.81, P 5 .55 and OS: HR, 1.40; 95% CI, 0.60-3.30; P 5 .44), DH (PFS: HR, 1.21; 95% CI, 0.27-5.31; P 5 .80 and OS: HR, 0.61; 95% CI, 0.08-4.73; P 5 .64), and non-GCB status (PFS: HR, 1.59; 95% CI, 0.83-3.03; P 5 .16 and OS: HR, 1.80; 95% CI, 0.89-3.67; P 5 .10) were associated with poorer outcomes. In patients with PET-CT–defined stage I/II DLBCL treated with R-CHOP–like therapy, with or without radiation, COO and DE and DH status were not significantly associated with inferior PFS or OS.

Citation

Barraclough, A., Alzahrani, M., Ettrup, M. S., Bishton, M., van Vliet, C., Farinha, P., …Cheah, C. Y. (2019). COO and MYC/BCL2 status do not predict outcome among patients with stage I/II DLBCL: a retrospective multicenter study. Blood Advances, 3(13), 2013-2021. https://doi.org/10.1182/bloodadvances.2019000251

• Journal Article Type: Article
• Acceptance Date: May 9, 2019
• Online Publication Date: Jul 8, 2019
• Publication Date: Jan 1, 2019
• Deposit Date: Dec 15, 2022
• Publicly Available Date: Jan 20, 2023
• Journal: Blood Advances
• Electronic ISSN: 2473-9529
• Publisher: American Society of Hematology
• Peer Reviewed: Peer Reviewed
• Volume: 3
• Issue: 13
• Pages: 2013-2021
• DOI: https://doi.org/10.1182/bloodadvances.2019000251
• Keywords: Hematology
• Public URL: https://nottingham-repository.worktribe.com/output/14322724
• Publisher URL: https://ashpublications.org/bloodadvances/article/3/13/2013/246628/COO-and-MYC-BCL2-status-do-not-predict-outcome