Abstract
This is a retrospective cohort study of consecutive adult patients who received a haploidentical-SCT (haplo-SCT) with post-transplant cyclophosphamide (PT-Cy) in a single centre. Poor graft function (PGF) was defined as the occurrence of either persistent neutropenia (ANC < 0.5 × 109/µL) with poor response to granulocyte colony-stimulating factors (G-CSF) and/or thrombocytopenia (platelets < 20 × 109/L) with transfusion dependence, with complete donor chimerism and without concurrent severe GVHD or underlying disease relapse, during the first 12 months after transplantation. Forty-four (27.5%) out of 161 patients were diagnosed with PGF. Previous CMV reactivation was significantly more frequent in patients with PGF (88.6% versus 73.5%, p = 0.04) and the number of reactivations was also higher in these patients. Besides, early CMV reactivations in the first 6 months post-SCT were also significantly more frequent among patients with PGF (88.6% versus 71.8% p = 0.025). Thirty-two percent of patients with PGF were treated with increasing doses of thrombopoietin-receptor agonists (TRA) and 7 patients were treated with a donor CD34 + selected boost. In total, 93.2% of patients reached adequate peripheral blood counts in a median time of 101 days (range 11–475) after diagnosis. PGF is a frequent complication after haplo-SCT with PT-Cy. CMV reactivation might be the most relevant factor associated to its development. Even when most patients recover peripheral counts with support therapy, there is a group of patients with persistent cytopenias who can effectively be treated with TRA and/or a boost of CD34 + selective cells.
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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
We thank the staff and nurses of all the hematology, transplant and ICU units for their care and contributions to making this work possible.
Funding
This work was partially supported by the Ministry of Economy and Competitiveness ISCIII-FIS grants PI17/01880 and PI2000521, co-financed by ERDF (FEDER) Funds from the European Commission. ‘A way of making Europe’, as well as grants from Asociación Madrileña de Hematología y Hemoterapia (AMHH) and Fundación Mutua Madrileña (FMM).
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Conception and design: IGC, RMMR, MK.
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Collection and assembly of data: IGC, RMMR, MK.
Data analysis and interpretation: all authors.
Manuscript writing: IGC, RMMR, MK.
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Gómez-Centurión, I., Martin Rojas, R.M., Bailén, R. et al. Poor graft function after haploidentical stem cell transplantation with post-transplant cyclophosphamide. Ann Hematol 102, 1561–1567 (2023). https://doi.org/10.1007/s00277-023-05206-5
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DOI: https://doi.org/10.1007/s00277-023-05206-5