Plerixafor and G-CSF versus placebo and G-CSF to mobilize hematopoietic stem cells for autologous stem cell transplantation in patients with multiple myeloma

Blood. 2009 Jun 4;113(23):5720-6. doi: 10.1182/blood-2008-08-174946. Epub 2009 Apr 10.


This phase 3, multicenter, randomized (1:1), double-blind, placebo-controlled study evaluated the safety and efficacy of plerixafor with granulocyte colony-stimulating factor (G-CSF) in mobilizing hematopoietic stem cells in patients with multiple myeloma. Patients received G-CSF (10 microg/kg) subcutaneously daily for up to 8 days. Beginning on day 4 and continuing daily for up to 4 days, patients received either plerixafor (240 microg/kg) or placebo subcutaneously. Starting on day 5, patients began daily apheresis for up to 4 days or until more than or equal to 6 x 10(6) CD34(+) cells/kg were collected. The primary endpoint was the percentage of patients who collected more than or equal to 6 x 10(6) CD34(+) cells/kg in less than or equal to 2 aphereses. A total of 106 of 148 (71.6%) patients in the plerixafor group and 53 of 154 (34.4%) patients in the placebo group met the primary endpoint (P < .001). A total of 54% of plerixafor-treated patients reached target after one apheresis, whereas 56% of the placebo-treated patients required 4 aphereses to reach target. The most common adverse events related to plerixafor were gastrointestinal disorders and injection site reactions. Plerixafor and G-CSF were well tolerated, and significantly more patients collected the optimal CD34(+) cell/kg target for transplantation earlier compared with G-CSF alone. This study is registered at as #NCT00103662.

Publication types

  • Clinical Trial, Phase III
  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Benzylamines
  • Cyclams
  • Female
  • Granulocyte Colony-Stimulating Factor / adverse effects
  • Granulocyte Colony-Stimulating Factor / pharmacology
  • Granulocyte Colony-Stimulating Factor / therapeutic use*
  • Hematopoietic Stem Cell Mobilization*
  • Hematopoietic Stem Cell Transplantation / methods*
  • Heterocyclic Compounds / adverse effects
  • Heterocyclic Compounds / pharmacology
  • Heterocyclic Compounds / therapeutic use*
  • Humans
  • Male
  • Middle Aged
  • Multiple Myeloma / drug therapy*
  • Multiple Myeloma / surgery
  • Transplantation, Autologous


  • Benzylamines
  • Cyclams
  • Heterocyclic Compounds
  • Granulocyte Colony-Stimulating Factor
  • plerixafor

Associated data