Augmented mobilization and collection of CD34+ hematopoietic cells from normal human volunteers stimulated with granulocyte–colony‐stimulating factor by single‐dose administration of AMD3100, a CXCR4 antagonist

Publisher Website
Google Scholar
Abstract
BACKGROUND: AMD3100, a selective antagonist of CXCR4, rapidly mobilizes CD34+ hematopoietic progenitor cells (HPCs) from marrow to peripheral blood with minimal side effects. STUDY DESIGN AND METHODS: To further investigate potential clinical utility of AMD3100 for CD34+ cell mobilization and collection, a Phase I study in normal volunteers was performed examining single‐dose administration of AMD3100 alone and in combination with a standard 5‐day granulocyte–colony‐stimulating factor (G–CSF) regimen. RESULTS: AMD3100 (160 µg/kg × 1 on Day 5) significantly increased both G–CSF‐stimulated (10 µg/kg/day) mobilization of CD34+ cells (3.8‐fold) and leukapheresis yield of CD34+ cells. Moreover, collection of CD34+ cells was comparable between individuals mobilized by a single‐dose regimen of AMD3100 (240 µg/kg) and individuals mobilized with a 5‐day regimen of G–CSF. AMD3100‐mobilized leukapheresis products contained significantly greater numbers of T and B cells compared to G–CSF‐stimulated leukapheresis products. CONCLUSION: These findings indicate that AMD3100 can be used alone or as an adjunct to G–CSF to mobilize cells for HPC transplantation.