ABSTRACT
Objective@#To investigate the association of hematological complete remssion (HCR) status on the outcomes of the patients with B-cell acute lymphoblastic leukemia (B-ALL) who were undergoing haploidentical stem cell transplantation (Haplo-SCT). @*Methods@#Retrospective analysis was performed on 317 patients with B-ALL who received Haplo-SCT with HCR before transplantation in the Institute of Hematology, Peking University from September 2012 to June 2016. A Cox proportional hazards model was used to analyze the effects of HCR status before transplantation on the outcomes of Haplo-SCT. @*Results@#The 3-year cumulative incidences of non-relapse mortality (NRM) and cumulative incidence of relapse (CIR) were 15% and 15%, respectively. The 3-year probabilities of leukemia-free survival (LFS) and overall survival (OS) were 71% and 74%, respectively. There was no statistical difference for 3-year NRM, CIR and LFS among the HCR patients with recovery of absolute neutrophil count (ANC) and platelet (CR) group, without recovery of ANC and with or without recovery of platelet (CRi) group and those in HCR with recovery of ANC but without recovery of platelet (CRp) group (P value ＞0.05 for all). The probability of OS in cases of CR group was significantly higher than that of CRi group (76% vs 59%，P=0.049). Multivariate analysis showed that factors associated with CIR included pre-transplantation minimal residual disease (P=0.006) and chronic GVHD (P=0.020). Platelet engraftment was associated with NRM, LFS, and OS (P＜0.001 for all). Grades Ⅲ-Ⅳ GVHD was associated with NRM (P＜0.001) and OS (P=0.035). Chronic GVHD was correlated with LFS (P＜0.001). @*Conclusion@#Our results indicate that no effect of HCR status before transplant on the outcomes was observed in patients with B-ALL who underwent Haplo-SCT.
ABSTRACT
Objective@#To assess the prognostic significance of immunophenotype complete remission (ICR) and hematological complete remission (HCR) before human-leukocyte antigen (HLA)-matched sibling donor transplantation (MSDT) in acute myeloid leukemia (AML) patients.@*Methods@#A cohort of 182 AML (non-APL) patients undergoing MSDT in HCR was retrospectively studied [including complete remission with ANC and PLT recovery (CR), CR with incomplete PLT recovery (CRp), CR with inconplete ANC and PLT recovery (CRi)]; ICR was determined as undetective minimal resudial disease (MRD) by multi-parameter flow cytometer.@*Results@#①Of the 182 patients, 97 were male, 85 female, and the median age was 41(4-62) years. ②The CR and CRi+CRp rates were 80.8% (147/182) and 19.2%(35/182), respectively; The 4-year cumulative incidence of relapse[CIR, (11.0±4.3)% vs (16.0±7.1)%, χ2=0.274, P=0.600], non-relapse mortality[NRM, (14.0±4.3)% vs (9.0±6.3)%, χ2=0.913, P=0.339], leukemia-free survival[LFS, (75.0±5.1)% vs (75.0±8.3)%, χ2=0.256, P=0.613], and overall survial [OS, (77.0±5.2)% vs (80.0±8.1)%, χ2=0.140, P=0.708] were comparable between the CRp+CRi and CR groups. ③Compared with the non-ICR group (n=35), the ICR group (n=147) showed lower 4-year CIR [(11.3±3.4) % vs (55.2±8.8) %, χ2=32.687, P<0.001], better 4-year LFS [(76.2±4.7)% vs (32.8±8.7)%, χ2=26.234, P<0.001] and OS[(79.0±4.7)% vs (39.0±9.1)%, χ2=25.253, P<0.001], and comparable NRM[(12.5±4.1)% vs (12.0±7.1)%, χ2=1.002, P=0.656]. ④Mulitvariate analysis confirmed the independent prognostic value of ICR in lower CIR [HR=11.026(95%CI 4.685-25.949), P<0.001], higher LFS [HR=5.785 (95% CI 2.974-11.254), P<0.001] and OS[HR=5.578 (95% CI 2.575-27.565), P<0.001].@*Conclusion@#The results indicated that ICR instead of HCR pre-transplantation had a significant prognostic value in AML patients undergoing MSDT.