Peripheral blood progenitor cell collection in low-weight children

Area of Science:

• Hematology
• Pediatric Oncology
• Stem Cell Transplantation

Background:

• Peripheral blood progenitor cells (PBPC) are increasingly used as a stem cell source for autologous and allogeneic hematopoietic stem cell transplantation, replacing traditional bone marrow.
• While PBPC transplantation is established, specific challenges arise in the pediatric setting due to patient and donor size, particularly concerning leukapheresis in very small children (<15-20 kg).

Purpose of the Study:

• To summarize data on the mobilization and collection of PBPC in small children.
• To address concerns regarding the safety and efficacy of leukapheresis in pediatric patients weighing less than 15-20 kg.

Main Methods:

• Review of published literature and internal data on PBPC mobilization and collection in pediatric patients.
• Analysis of mobilization strategies involving cytokines alone or in combination with chemotherapy.
• Evaluation of the safety and efficiency of PBPC collection procedures in small children.

Main Results:

• Mobilization of PBPC using cytokines, with or without chemotherapy, is well-tolerated in pediatric patients.
• Allogeneic transplantation using pediatric donors shows no increased incidence of complications.
• PBPC collection is a safe and efficient procedure for even the smallest children when conducted by experienced apheresis teams.

Conclusions:

• Peripheral blood progenitor cell transplantation is a viable and safe option for pediatric hematopoietic stem cell transplantation.
• Mobilization and collection of PBPC in small children are feasible and effective, overcoming previous technical concerns.
• Experienced apheresis teams are crucial for ensuring the safety and efficiency of PBPC collection in the pediatric population.