Haploidentical transplantation is associated with better overall survival when compared to single cord blood transplantation: an EBMT-Eurocord study of acute leukemia patients conditioned with thiotepa, busulfan, and fludarabine

Federica Giannotti, Myriam Labopin, Roni Shouval, Jaime Sanz, William Arcese, Emanuele Angelucci, Jorge Sierra, Josep-Maria Ribera Santasusana, Stella Santarone, Bruno Benedetto, Alessandro Rambaldi, Riccardo Saccardi, Didier Blaise, Michele Angelo Carella, Vanderson Rocha, Frederic Baron, Mohamad Mohty, Annalisa Ruggeri, Arnon Nagler

Research output: Contribution to journalArticle

Abstract

BACKGROUND: Thiotepa-busulfan-fludarabine (TBF) is a widely used conditioning regimen in single umbilical cord blood transplantation (SUCBT). More recently, it was introduced in the setting of non-T cell depleted haploidentical stem cell transplantation (NTD-Haplo). Whether TBF based conditioning provides additional benefit in transplantation from a particular alternative donor type remains to be established.

METHODS: This was a retrospective study based on an international European registry. We compared outcomes of de-novo acute myeloid leukemia patients in complete remission receiving NTD-Haplo (n = 186) vs. SUCBT (n = 147) following myeloablative conditioning (MAC) with TBF. Median follow-up was 23 months. Treatment groups resembled in baseline characteristics.

RESULTS: SUCBT was associated with delayed engraftment and higher graft failure. In multivariate analysis no statistically significant differences were observed between the two groups in terms of acute or chronic graft-versus-host disease (GvHD) (HR = 1.03, p = 0.92 or HR = 1.86, p = 0.21) and relapse incidence (HR = 0.8, p = 0.65). Non-relapse mortality (NRM) was significantly higher in SUCBT as compared to NTD-Haplo (HR = 2.63, p = 0.001); moreover, SUCBT did worse in terms of overall survival (HR = 2.18, p = 0.002), leukemia-free survival (HR = 1.94, p = 0.007), and GvHD relapse-free survival (HR = 2.38, p = 0.0002).

CONCLUSIONS: Our results suggest that TBF-MAC might allow for a potent graft-versus-leukemia, regardless of the alternative donor type. Furthermore, in patients receiving TBF-MAC, survival with NTD-Haplo may be better compared to SUCBT due to decreased NRM.

Original languageEnglish
Pages (from-to)110
Number of pages10
JournalJournal of Hematology and Oncology
Volume11
Issue number1
DOIs
Publication statusPublished - Aug 30 2018

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    Giannotti, F., Labopin, M., Shouval, R., Sanz, J., Arcese, W., Angelucci, E., Sierra, J., Santasusana, J-M. R., Santarone, S., Benedetto, B., Rambaldi, A., Saccardi, R., Blaise, D., Carella, M. A., Rocha, V., Baron, F., Mohty, M., Ruggeri, A., & Nagler, A. (2018). Haploidentical transplantation is associated with better overall survival when compared to single cord blood transplantation: an EBMT-Eurocord study of acute leukemia patients conditioned with thiotepa, busulfan, and fludarabine. Journal of Hematology and Oncology, 11(1), 110. https://doi.org/10.1186/s13045-018-0655-8