Abstract
Background. The term diffuse large B-cell lymphoma (DLBCL) defines a heterogeneous group of lymphatic tumors. DLBCL is the most frequent immunomorphological variant among aggressive non-Hodgkin lymphomas (NHLs) in adults. It accounts for 30–40 % of all NHLs. Long-term results of treating newly diagnosed DLBCL have not been reliably evidenced in healthcare practice and, therefore, require further study.
Aim. To assess the efficacy of chemotherapy for newly diagnosed DLBCL in terms of the 5-year progression-free survival (PFS) based on the analysis of data from the in-house hematology service registry at the Moscow City Clinical Hospital No. 52.
Materials & Methods. The study enrolled 156 patients with newly diagnosed DLBCL in the period from 2015 to 2022. The patients were 35–85 years of age (median 65 years).
Results. First-line R-CHOP/R-miniCHOP chemotherapy was administered to 70 % of patients, 28 % of patients received R-DA-EPOCH, and 2 % were treated either with R-B or R-CVP. Complete response was achieved in 100 (65 %) patients: 75 out of them (75 %) received R-CHOP/R-miniCHOP, whereas 25 (25 %) received R-DA-EPOCH. Induction mortality was below 2.5 %. The 5-year PFS was 32 % with the survival median of 20 months. As confirmed by the multivariate analysis, the age over 60 years (p = 0.003), high IPI risk group (p = 0.015), advanced stage of the disease (p = 0.002), and non-GCB subtype of tumor (p = 0.045) can be regarded as independent predictors of early DLBCL progression.
Conclusion. DLBCL is an aggressive B-cell lymphoma and one of the most frequent immunomorphological NHL variants in the clinical practice of the Moscow City Clinical Hospital No. 52. Despite the use of generally accepted standard immunochemotherapy regimens, the results attained by the present study illustrate unresolved challenges in chemotherapy for newly diagnosed DLBCL patients. By now, more effective first-line DLBCL therapy methods already exist, which are confirmed by the results of clinical trials. As it is sometimes impossible to further escalate immunochemotherapy for obvious reasons (age restrictions, health status, co-morbidities, etc.), a new promising strategy appears to be the personalized chemotherapy based on the study of genetic DLBCL profile of each particular patient.
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