Abstract
The transplant outcomes of non-first-degree (NFD) related donors in haploidentical haematopoietic stem cell transplantation (haplo-HSCT) remain unclear. This multi-centre analysis compared NFD and first-degree (FD) related donors in haplo-HSCT using a low-dose anti-T-lymphocyte globulin/G-CSF-mobilised peripheral blood stem cell graft-based regimen. Ninety-nine patients (33 NFD; 66 FD) were included. All patients achieved myeloid and platelet engraftment. The 100-day cumulative incidence (CI) of aGVHD, 2-year CIs of relapse, cGVHD, and NRM, and 2-year probabilities of OS and GRFS were comparable between the two cohorts. In multivariate analysis, donor type (NFD vs. FD) had no impact on OS, PFS, GRFS, incidences of relapse, grade II–IV aGVHD or moderate–severe cGVHD. Older donor age was associated with a higher incidence of grade II–IV aGVHD (HR, 1.64, p = 0.03), moderate–severe cGVHD (HR, 1.92, p = 0.01) and worse GRFS (HR, 1.40, p = 0.02). A lower level of donor–recipient HLA matching was associated with a higher incidence of moderate–severe cGVHD (HR, 4.07, p = 0.02), and disease at complete remission was associated with better OS (HR, 0.21, p = 0.01) and PFS (HR, 0.3, p = 0.03). In conclusion, NFD donors may serve as feasible alternatives when FD donors are not available for haplo-HSCT.
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Acknowledgements
This study was supported by the National Key Basic Research Programme of China (grant # 2018YFA0107804), the National Science Foundation of China (grant # NSFC81730008, NSFC81970158 and NSFC82000180) and the Zhejiang Key R&D Programme (Science and Technology Department) (grant # 2019C03016).
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Ye, Y., Wang, M., Malard, F. et al. Comparison of non-first-degree related donors and first-degree related donors in haploidentical HSCT: a multi-centre retrospective analysis. Bone Marrow Transplant 56, 2567–2574 (2021). https://doi.org/10.1038/s41409-021-01352-4
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DOI: https://doi.org/10.1038/s41409-021-01352-4
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