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  • Title: The Hyper-CVAD chemotherapy regimen has an adverse long-term impact on the ability to mobilize peripheral blood stem cells, which can be readily circumvented by using the early cycles for mobilization.
    Author: Keane C, Gibbs S, Seymour JF, Mills AK, Grimmett K, Van Kuilenberg R, Saal R, Gill D, Prince HM, Marlton P, Mollee P.
    Journal: Hematol Oncol; 2006 Sep; 24(3):159-63. PubMed ID: 16775841.
    Abstract:
    The Hyper-CVAD chemotherapy regimen is being increasingly applied to a number of haematological malignancies. We assessed the impact of Hyper-CVAD on peripheral blood stem cell (PBSC) yields and examined the optimal timing of PBSC collection when using this regimen. Seventy-four consecutive patients were identified in whom an attempt was made to collect PBSC, usually on recovery from cycle A or B. Where PBSC collection was attempted after cycle 3B, only 18% (3/17) of patients successfully mobilized. Fifty-seven patients were mobilized on recovery from cycle 1B (n = 13), 2A (n = 22), 2B (n = 14) or 3A (n = 8). Compared with cycle 2A, 1B was not superior in achieving the minimum of > or =2 x 10(6)/kg CD34+ cells (100% vs. 77%, p = 0.13), but was superior in terms of total CD34+ yield (21.4 vs. 3.2 x 10(6)/kg, p < 0.001), achieving the target CD34+ cell count of > or =5 x 10(6)/kg (92% vs 36%, p = 0.002), and obtaining both a minimum (92% vs. 18%, p < 0.001) and target (77% vs. 0%, p < 0.001) graft with a single apheresis. There were no significant differences in PBSC yields following cycles 2A, 2B and 3A. Hyper-CVAD has substantial stem cell toxicity which can be readily circumvented by using the early chemotherapy cycles for mobilization.
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