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Chemomobilization with cyclophosphamide and filgrastim in multiple myeloma patients following lenalidomide treatmentGerfen, Ashlee January 2012 (has links)
Class of 2012 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.
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Chemomobilization with Cyclophosphamide and Filgrastim in Multiple Myeloma Patients Following Lenalidomide TreatmentGerfen, Ashlee, Green, Myke January 2012 (has links)
Class of 2012 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.
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