Efficacy of dose-adjusted EPOCH plus rituximab/R-CHOP regimens and the prognosis analysis in patients with MYC, BCL2/BCL6 gene copy number gain lymphoma and double-hit lymphoma: results from a single institution retrospective clinical study
Received 25 October 2018
Accepted for publication 27 December 2018
Published 11 February 2019 Volume 2019:11 Pages 1363—1372
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 2
Editor who approved publication: Dr Antonella D'Anneo
Qianwen Ma,1,2,* Yu Chang,1,2,* Ling Li,1,2 Xin Li,1,2 Xinhua Wang,1,2 Jingjing Wu,1,2 Xiaorui Fu,1,2 Zhenchang Sun,1,2 Hui Yu,1,2 Xudong Zhang,1,2 Zhiyuan Zhou,1,2 Feifei Nan,1,2 Zhaoming Li,1,2 Xiyang Liu,1,2 Qian Zhao,1,2 Yang Li,1,2 Lan Zhang,2,3 Mingzhi Zhang,1,2 Lei Zhang1,2
1Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan, China; 2Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou 450000, Henan, China; 3Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan, China
*These authors contributed equally to this work
Purpose: To compare the efficacy of rituximab, dose-adjusted etoposide, prednisone, vincristine, cyclophosphamide, and doxorubicin (R-DA-EPOCH) with traditional rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) regimens in double-hit lymphoma (DHL) and gene copy number gain (CNG) lymphoma and to contrast the prognosis of these two disease types.
Methods: We retrospectively examined 127 cases of newly diagnosed diffuse large B-cell lymphoma (DLBCL), and used fluorescence in situ hybridization (FISH) to detect genetic abnormalities in MYC, BCL2, and BCL6.
Results: In the two schemes, the 2-year progression-free survival (PFS) was higher for R-DA-EPOCH group than for R-CHOP (79.8% vs 57.5%, P=0.002), this advantage was also reflected in 2-year overall survival (OS) (81.6% vs 58.5%, P=0.002). In double CNG patients, R-DA-EPOCH regimen was significantly better than R-CHOP (P=0.007 for PFS, P=0.010 for OS), and R-DA-EPOCH has the same advantage in DHL patients (P=0.001 for PFS, P=0.047 for OS). For the two disease types, the PFS for DHL was inferior to that for double CNG (52.9% vs 72.4%, P=0.008), while the OS was not significantly different (P=0.050). Subgroup analysis showed that the PFS for double CNG with MYC and BCL2 was superior to that for DHL with MYC and BCL2 (P=0.043), this trend is also seen in double CNG and DHL with MYC and BCL6 (P=0.036). However, the OS was not significantly different between the two subgroups. Multivariate analyses showed that in DLBCL patients with genetic abnormality detected by FISH, the treatment and disease types were independent prognostic factors. The adverse reaction rates were similar in R-DA-EPOCH and R-CHOP (P>0.05).
Conclusion: Our retrospective study shows that DHL has a poorer prognosis than double CNG. Based on its improved lifetime and good tolerance, R-DA-EPOCH is a promising regimen for DHL or double CNG, which is expected to become the first-line treatment for high-risk DLBCL types based on more clinical research.
Keywords: R-DA-EPOCH, R-CHOP, DHL, double CNG, efficacy and prognosis
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