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    Chemomobilization with Cyclophosphamide and Filgrastim in Multiple Myeloma Patients Following Lenalidomide Treatment

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    Author
    Gerfen, Ashlee
    Green, Myke
    Affiliation
    College of Pharmacy, The University of Arizona
    Issue Date
    2012
    Keywords
    Chemomobilization
    Autologous stem cell transplant (ASCT)
    multiple myeloma (MM)
    Lenalidomide (LEN)
    cyclophosphamide (CTX)
    MeSH Subjects
    Multiple Myeloma
    Stem Cell Transplantation
    Cyclophosphamide
    Advisor
    Green, Myke
    
    Metadata
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    Rights
    Copyright © is held by the author.
    Collection Information
    This item is part of the Pharmacy Student Research Projects collection, made available by the College of Pharmacy and the University Libraries at the University of Arizona. For more information about items in this collection, please contact Jennifer Martin, Librarian and Clinical Instructor, Pharmacy Practice and Science, jenmartin@email.arizona.edu.
    Publisher
    The University of Arizona.
    Abstract
    Specific Aims: Autologous stem cell transplant (ASCT) is the current gold standard following induction therapy to improve survival of multiple myeloma (MM). Lenalidomide (LEN) is used for treatment of MM before ASCT, but exposure may impair autologous peripheral blood stem cell (PBSC) mobilization. Chemomobilization with cyclophosphamide (CTX) has not been evaluated in this setting. CTX + filgrastim was investigated to determine if LEN-associated mobilization impairment can be abrogated. Methods: 36 pts (group A=12 pts who received ≥2 cycles of LEN and group B=24 pts without LEN) were analyzed retrospectively. Baseline characteristics were matched (p>0.05 for all variables). All pts received CTX (median group B, 1.5g/m2; median group A, 3gm/m2(p=0.18)) and filgrastim 10µg/kg/day. Primary outcomes include number of CD34+ cells collected and number of leukapheresis sessions. Secondary outcomes include failure to collect CD34+ cells and total CD34+ cells collected after second leukapheresis. Main Results: Total median number of CD34+ cells collected in group B=9.15x106/kg CD34+ cells and group A=7.43x106/kg CD34+ cells (p=0.159). Median number of apheresis sessions in group B=2 and group A=3 (p=0.42). Two of 12 pts with antecedent LEN usage failed to collect while no patient without previous LEN exposure failed to collect (p=0.105). Total number of CD34+ cells collected after 2 apheresis sessions for group B=8.13x106/kg CD34+ cells and group A=3.34x106/kg CD34+ cells (p=0.06). Conclusions: Chemomobilization with CTX + filgrastim yields robust PBSC collections irrespective of antecedent lenalidomide. There was a trend towards lesser PBSC collection in LEN-treated pts.
    Description
    Class of 2012 Abstract
    Collections
    Pharmacy Student Research Projects

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