HLA-mismatched stem cell microtransplantation compared to matched-sibling donor transplantation for intermediate/high-risk acute myeloid leukemia
HLA-mismatched stem cell microtransplantation is a new form of transplantation reported in recent years. We compared 59 patients undergoing microtransplantation to 66 patients undergoing HLA-matched sibling donor (MSD) transplantation at the same period from April 2012 to December 2016, who all suffered from intermediate/high-risk acute myelogenous leukemia (AML) in first complete remission (CR1). The estimated overall survival (OS) at 2 years was 74.1% ± 6.2% and 34.3% ± 7.9% in MSD and microtransplantation group, respectively (P = 0.001). The estimated leukemia-free survival (LFS) at 2 years was 73.3% ± 6.1% in the MSD group and 31.6% ± 7.6% in the microtransplantation group (P = 0.000). The 2-year cumulative incidence of relapse was 17.6% and 62.3% in the MSD and microtransplantation groups, respectively (P < 0.0001). The 2-year cumulative incidence of nonrelapse mortality was 10.9% in MSD group and 4.2% in the microtransplantation group (P = 0.251). Hematopoietic recovery time was shorter in the microtransplantation group than in the MSD group (P < 0.05). The infection rate was higher in the MSD group than in the microtransplantation group (P = 0.012). The preliminary results suggested that OS and LFS of microtransplantation were inferior to MSD transplantation for intermediate/high-risk AML in CR1.
KeywordsMicrotransplantation Matched-sibling donor transplantation Acute myelogenous leukemia
This work was supported by the National Key R&D Program of China (2016YFC0902800, 2017YFA0104502, 2017ZX09304021), Innovation Capability Development Project of Jiangsu Province (BM2015004), Jiangsu Provincial Key Medical Center (YXZXA2016002), Jiangsu Medical Outstanding Talents Project (JCRCA2016002), and Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
Compliance with ethical standards
The First Affiliated Hospital of Soochow University and Huai'an Hospital Affiliated to Xuzhou Medical College Ethics Committee approved this study; patients were recruited after obtaining informed consent.
Conflict of interest
The authors declare that they have no conflict of interest.
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