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Stem Cell Procurement

Prognostic value of CD34+ peak in peripheral blood during mobilization in intermediate-risk AML patients treated in first CR by autologous or allogeneic transplantation

Abstract

Ninety-six AML patients in 1st CR were evaluated for peak CD34+ cell levels in peripheral blood (PB) during PBSC mobilization and harvest. Distribution of CD34+ cell peaks was determined and cases were grouped on the basis of 50th and 75th percentile: group A, those having a CD34+ cell peak 70 × 109/L (n=48); group B, those having a CD34+ cell peak between 70 and 183 × 109/L (n=24); group C, those having a CD34+ cell peak >183 × 109/L (n=24). Irrespective of post-remission treatment received, group A had a disease free survival (DFS) of 73%, group B a DFS of 51% and group C of 30% (P=0.0003). In intermediate cytogenetic risk patients, those treated by autologous transplantation had a DFS of 68, 33 and 14% in the groups A, B and C, respectively, (P=0.01) whereas after allogeneic transplantation DFS was 87% in group A+B vs 50% in group C (P=0.009). The peak of CD34+ cells in PB, was an independent predictor for DFS in multivariate analysis.

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Acknowledgements

This study is partially funded by Progetto Obiettivo Ricerca Regione Sicilia (Italy) and by Fondazione Fon.ca.ne.sa.-Catania (Italy); we are grateful to Dr Giovanni Tripepi from the Institute of Clinical Epidemiology-CNR-Reggio Calabria (Italy) for helpful discussion and advices in performing multivariate analysis. English version revised by BioMed Proofreading (Ohio-USA).

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Correspondence to G Milone.

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Milone, G., Poidomani, M., Leotta, S. et al. Prognostic value of CD34+ peak in peripheral blood during mobilization in intermediate-risk AML patients treated in first CR by autologous or allogeneic transplantation. Bone Marrow Transplant 47, 24–32 (2012). https://doi.org/10.1038/bmt.2011.33

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