Ofatumumab, Etoposide, and Cytarabine Intensive Mobilization Regimen in Patients with High-risk Relapsed/Refractory Diffuse Large B-Cell Lymphoma Undergoing Autologous Stem Cell Transplantation.

Autor: Thiruvengadam SK; Division of Hematology/Oncology, Department of Medicine, UCSF Medical Center, San Francisco, CA; UCSF Helen Diller Family Comprehensive Cancer Center, UCSF Medical Center, San Francisco, CA., Hunter B; Department of Hematology, Intermountain Healthcare, Salt Lake City, UT., Varnavski A; Medical Science Liaison, Adaptive Biotechnologies, Seattle, WA., Fakhri B; Division of Hematology/Oncology, Department of Medicine, UCSF Medical Center, San Francisco, CA; UCSF Helen Diller Family Comprehensive Cancer Center, UCSF Medical Center, San Francisco, CA., Kaplan L; Division of Hematology/Oncology, Department of Medicine, UCSF Medical Center, San Francisco, CA; UCSF Helen Diller Family Comprehensive Cancer Center, UCSF Medical Center, San Francisco, CA., Ai WZ; Division of Hematology/Oncology, Department of Medicine, UCSF Medical Center, San Francisco, CA; UCSF Helen Diller Family Comprehensive Cancer Center, UCSF Medical Center, San Francisco, CA., Pampaloni M; Department of Radiology, UCSF Medical Center, San Francisco, CA., Huang CY; UCSF Helen Diller Family Comprehensive Cancer Center, UCSF Medical Center, San Francisco, CA; Department of Epidemiology and Biostatistics, UCSF Medical Center, San Francisco, CA., Martin T 3rd; Division of Hematology/Oncology, Department of Medicine, UCSF Medical Center, San Francisco, CA; UCSF Helen Diller Family Comprehensive Cancer Center, UCSF Medical Center, San Francisco, CA., Damon L; Division of Hematology/Oncology, Department of Medicine, UCSF Medical Center, San Francisco, CA; UCSF Helen Diller Family Comprehensive Cancer Center, UCSF Medical Center, San Francisco, CA., Andreadis CB; Division of Hematology/Oncology, Department of Medicine, UCSF Medical Center, San Francisco, CA; UCSF Helen Diller Family Comprehensive Cancer Center, UCSF Medical Center, San Francisco, CA. Electronic address: charalambos.andreadis@ucsf.edu.
Jazyk: angličtina
Zdroj: Clinical lymphoma, myeloma & leukemia [Clin Lymphoma Myeloma Leuk] 2021 Apr; Vol. 21 (4), pp. 246-256.e2. Date of Electronic Publication: 2020 Nov 11.
DOI: 10.1016/j.clml.2020.11.005
Abstrakt: Background: More than one-half of high-risk patients with relapsed/refractory (rr) diffuse large B-cell lymphoma (DLBCL) relapse after autologous hematopoietic cell transplantation (auto-HCT). In this phase II study, we investigate the long-term outcomes of high-risk patients with rrDLBCL receiving intensive consolidation therapy (ICT) with OVA (ofatumumab, etoposide, and high-dose cytarabine) prior to auto-HCT.
Patients and Methods: The primary endpoints were the ability of OVA to mobilize peripheral stem cells and the 2-year progression-free survival (PFS) rate following OVA. Secondary endpoints included safety, 2-year overall survival (OS), impact of cell of origin (COO), and the prognostic utility of next-generation sequencing minimal residual disease (MRD) testing. We simultaneously retrospectively assessed the outcomes of DLBCL patients who underwent ICT with a similar regimen at our institution.
Results: Twenty-seven patients received salvage chemotherapy, with a response rate of 25% in patients with germinal center B-cell (GCB)-DLBCL versus 92% in patients with non-GCB-DLBCL (P = .003). Nineteen responding patients underwent ICT with OVA (100% successful stem cell mobilization). The 2-year PFS and OS rate was 47% and 59%, respectively, with no difference based on COO. Similar findings were observed when the study and retrospective cohorts were combined. Neutropenia was the most common toxicity (47%). MRD-negative patients at the completion of salvage had a median OS of not reached versus 3.5 months in MRD-positive patients (P = .02).
Conclusions: OVA followed by auto-HCT is effective and safe for high-risk rrDLBCL. Patients with GCB-DLBCL had a lower response to salvage chemotherapy, but no difference in outcomes based on COO was seen after auto-HCT. MRD testing in the relapsed setting was predictive of long-term survival.
(Copyright © 2020 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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