Servicio de Hemato Oncologia

Spain

Servicio de Hemato Oncologia

Spain
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Sevilla J.,Servicio de Hemato Oncologia | Sevilla J.,Hospital Infantil Universitario Nino Jesus | Guillen M.,Servicio de Hemato Oncologia | Guillen M.,Hospital Infantil Universitario Nino Jesus | And 10 more authors.
Cytotherapy | Year: 2013

The definition of poor mobilizers is not clear in pediatric patients undergoing autologous peripheral blood hematopoietic progenitor cell (HPC) mobilization. Most studies conducted in children define those variables related to the collection of HPC after leukapheresis, but the information regarding exclusively the mobilization process is scarce. In our experience, most children (92.2%) reach the target CD34+ cell dose for autologous peripheral blood progenitor cell transplantation if CD34+ cell count was higher than 10/mL. No differences were observed between those with >20 CD34 + cells/mL and 11e20 CD34+ cells/mL. In this study, we analyzed the variables that influence CD34+ cell count; we found that prior use of radiotherapy was the main variable related to poor mobilization. Patients diagnosed with Ewing sarcoma, treated with radiotherapy and mobilized with standard doses of granulocyte colony-stimulating factor (G-CSF) were also at a high risk of mobilization failure. In these patients, we should consider mobilization with high dose G-CSF and be prepared with new mobilization agents to avoid delay on their course of chemotherapy. © 2013, International Society for Cellular Therapy.

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