Reduced Intensity Compared to Non-myeloablative Conditioning in Patients with Non-Hodgkin Lymphoma undergoing Allogeneic Hematopoietic Stem Cell Transplantation

氟达拉滨 全身照射 医学 环磷酰胺 布苏尔班 内科学 移植 梅尔法兰 外科 造血干细胞移植 胃肠病学 噻替帕 养生 肿瘤科 化疗
作者
Karthik Nath,Kristen Peterson,Samantha Brown,Sean M. Devlin,Natasia Rodriguez,Juliet N. Barker,Sergío Giralt,Boglarka Gyurkocza,Ann A. Jakubowski,Esperanza B. Papadopoulos,Doris M. Ponce,Michael Scordo,Gunjan L. Shah,Miguel Angel Perales,Craig S. Sauter,Andrew Lin,Parastoo B. Dahi
标识
DOI:10.1016/j.jtct.2023.09.022
摘要

. Reduced intensity (RIC) and non-myeloablative (NMA) conditioning are preferred for patients with non-Hodgkin lymphoma (NHL) receiving allogeneic hematopoietic stem cell transplantation (allo-HCT). Although prior studies have suggested that higher-intensity regimens within RIC-NMA conditioning are associated with inferior outcomes in patients with NHL, the optimal conditioning regimen remains unknown.. We performed a retrospective single-center analysis to determine outcomes of adult patients with B- and T-cell NHL who underwent allo-HCT and received either RIC or NMA conditioning between March 2008 - December 2019. RIC regimens included fludarabine-cyclophosphamide-thiotepa-4Gy-total body irradiation (Flu-Cy-TT-4Gy-TBI), fludarabine-melphalan (Flu-Mel), fludarabine-cyclophosphamide-4Gy-total body irradiation (Flu-Cy-4Gy-TBI) and fludarabine-busulfan-4 (Flu-Bu-4). The NMA regimen included fludarabine-cyclophosphamide-2Gy-total body irradiation (Flu-Cy-2Gy-TBI). The primary outcome was overall survival. Secondary outcomes included progression-free survival, non-relapse mortality and the incidence of acute and chronic graft-vs-host-disease (GvHD).. Of 279 transplanted patients (median age, 58 years), 110 received RIC (55% Flu-Mel, 38% Flu-Cy-TT-4Gy-TBI, 6% Flu-Bu-4, 1% Flu-Cy-4Gy-TBI) and 169 received NMA conditioning with Flu-Cy-2Gy-TBI. With a median of 64 months of follow-up from allo-HCT, there was no significant difference in overall survival between the NMA and RIC groups (median not reached [NR] vs 103 months, respectively. P = 0.1), and this was maintained on multivariable analysis. Similarly, after adjustment for all independently significant covariates (age, Karnofsky performance status, HCT-CI, disease histology), the regression analysis showed no significant difference in progression-free survival with RIC compared to NMA conditioning (hazard ratio [HR] 1.38; 95% CI 0.92 - 2.09, P = 0.24). On univariable analysis, there was no significant difference in non-relapse mortality between RIC and NMA conditioning (100-day estimates: 10.0% vs. 1.8%, respectively, P = 0.5). After adjustment for age, ethnicity, Karnofsky performance score, HCT-CI, GvHD prophylaxis and donor source, RIC conditioning was associated with a significantly higher incidence of non-relapse mortality compared to NMA conditioning (HR 2.61, 95% CI 1.04 - 6.52, P = 0.039). On multivariable analysis, compared with the Flu-Cy-2Gy-TBI regimen, the RIC cohort had higher rates of grade II-IV (HR, 2.25; 95% CI, 1.31 - 3.86; P = 0.002) and grade III-IV acute GvHD (HR, 5.62; 95% CI, 2.03 - 15.6; P < 0.001).. The findings of this study suggest that NMA conditioning with Flu-Cy-TBI-2Gy may be considered over more intensive RIC regimens for patients with NHL undergoing allo-HCT.
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