Abstract
Limited information is available on the impact of intensity of conditioning regimens in haploidentical peripheral blood stem cell transplant (haploPBSCT) with post-transplant cyclophosphamide (PTcy). We retrospectively compared outcomes of haplo-PBSCT between myeloablative (MAC) (n = 24) and reduced intensity conditioning (RIC) regimens (n = 65). Propensity score-based multivariable analyses were performed to adjust confounding effects of baseline characteristics between both groups. Eighty-nine patients underwent haplo-PBSCT between January 2012 and June 2019. For MAC and RIC, the cumulative incidences of grade III-–IV acute GVHD were 4.2% and 3.1%, respectively (p = 0.92), and chronic GVHD were 18.9% and 36.5%, respectively (p = 0.08). Median follow-up for overall survival (OS) after MAC and RIC was 1.86 and 2.2 years, respectively. For MAC and RIC, one-year OS was 68.8% and 67.4%, respectively (p = 0.85); one-year relapse rate was 22.4% and 18.3%, respectively (p = 0.74); one-year relapse-free survival (RFS) was 56% and 59.7%, respectively (p = 0.87); and one-year non-relapse mortality (NRM) was 22% and 21.9%, respectively (p = 0.58). Using propensity score-based multivariable analyses, no difference in OS (HR 0.72, p = 0.51), relapse (SHR 0.63, p = 0.42), RFS (HR 0.74, p = 0.49) and NRM (SHR 1.11, p = 0.87) was noted between RIC and MAC. Our study shows no difference in outcomes between MAC and RIC regimens in haplo-PBSCT.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 12 print issues and online access
$259.00 per year
only $21.58 per issue
Rent or buy this article
Prices vary by article type
from$1.95
to$39.95
Prices may be subject to local taxes which are calculated during checkout
References
Luznik L, O’Donnell PV, Symons HJ, Chen AR, Leffell MS, Zahurak M, et al. HLA-haploidentical bone marrow transplantation for hematologic malignancies using nonmyeloablative conditioning and high-dose, posttransplantation cyclophosphamide. Biol Blood Marrow Transpl. 2008;14:641–50.
Bashey A, Zhang MJ, McCurdy SR, St Martin A, Argall T, Anasetti C, et al. Mobilized peripheral blood stem cells versus unstimulated bone marrow as a graft source for t-cell-replete haploidentical donor transplantation using post-transplant cyclophosphamide. J Clin Oncol. 2017;35:3002–9.
Ruggeri A, Labopin M, Bacigalupo A, Gulbas Z, Koc Y, Blaise D, et al. Bone marrow versus mobilized peripheral blood stem cells in haploidentical transplants using posttransplantation cyclophosphamide. Cancer. 2018;124:1428–37.
Solomon SR, Sizemore CA, Sanacore M, Zhang X, Brown S, Holland HK, et al. Total body irradiation-based myeloablative haploidentical stem cell transplantation is a safe and effective alternative to unrelated donor transplantation in patients without matched sibling donors. Biol Blood Marrow Transpl. 2015;21:1299–307.
Raiola AM, Dominietto A, Ghiso A, Di Grazia C, Lamparelli T, Gualandi F, et al. Unmanipulated haploidentical bone marrow transplantation and posttransplantation cyclophosphamide for hematologic malignancies after myeloablative conditioning. Biol Blood Marrow Transpl. 2013;19:117–22.
Solomon SR, Sizemore CA, Sanacore M, Zhang X, Brown S, Holland HK, et al. Haploidentical transplantation using T cell replete peripheral blood stem cells and myeloablative conditioning in patients with high-risk hematologic malignancies who lack conventional donors is well tolerated and produces excellent relapse-free survival: results of a prospective phase II trial. Biol Blood Marrow Transpl. 2012;18:1859–66.
Solomon SR, St Martin A, Shah NN, Fatobene G, Al Malki MM, Ballen KK, et al. Myeloablative vs reduced intensity T-cell-replete haploidentical transplantation for hematologic malignancy. Blood Adv. 2019;3:2836–44.
Rubio MT, Savani BN, Labopin M, Piemontese S, Polge E, Ciceri F, et al. Impact of conditioning intensity in T-replete haplo-identical stem cell transplantation for acute leukemia: a report from the acute leukemia working party of the EBMT. J Hematol Oncol. 2016;9:25.
Elze MC, Gregson J, Baber U, Williamson E, Sartori S, Mehran R, et al. Comparison of propensity score methods and covariate adjustment: evaluation in 4 cardiovascular studies. J Am Coll Cardiol. 2017;69:345–57.
Lee DW, Santomasso BD, Locke FL, Ghobadi A, Turtle CJ, Brudno JN, et al. ASTCT consensus grading for cytokine release syndrome and neurologic toxicity associated with immune effector cells. Biol Blood Marrow Transpl. 2019;25:625–38.
Huselton E, Slade M, Trinkaus KM, DiPersio JF, Westervelt P, Romee R. Propensity score analysis of conditioning intensity in peripheral blood haploidentical hematopoietic cell transplantation. Biol Blood Marrow Transpl. 2018;24:2047–55.
Baker M, Wang H, Rowley SD, Cai L, Pecora AL, Skarbnik A, et al. Comparative outcomes after haploidentical or unrelated donor bone marrow or blood stem cell transplantation in adult patients with hematological malignancies. Biol Blood Marrow Transpl. 2016;22:2047–55.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Additional information
Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Supplementary information
Rights and permissions
About this article
Cite this article
Modi, D., Kim, S., Deol, A. et al. Comparison of myeloablative and reduced intensity conditioning regimens in haploidentical peripheral blood stem cell transplantation. Bone Marrow Transplant 56, 741–744 (2021). https://doi.org/10.1038/s41409-020-01079-8
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/s41409-020-01079-8