Analysis of hematopoietic recovery after autologous transplantation as method of quality control for long-term progenitor cell cryopreservation.
File(s)Potency manuscript Pavlu et al..docx (55.18 KB)
Accepted version
Author(s)
Type
Journal Article
Abstract
Hematopoietic precursor cells (HPC) are able to restore hematopoiesis after high-dose chemotherapy and their cryopreservation is routinely employed prior to the autologous hematopoietic cell transplantation (AHCT). Although previous studies showed feasibility of long-term HPC storage, concerns remain about possible negative effects on their potency. To study the effects of long-term cryopreservation, we compared time to neutrophil and platelet recovery in 50 patients receiving two AHCT for multiple myeloma at least 2 years apart between 2006 and 2016, using HPC obtained from one mobilization and collection attempt before the first transplant. This product was divided into equivalent fractions allowing a minimum of 2 × 106 CD34+ cells/kg recipient’s weight. One fraction was used for the first transplant after median storage of 60 days (range, 17–165) and another fraction was used after median storage of 1448 days (range, 849–3510) at the second AHCT. Neutrophil recovery occurred at 14 days (median; range, 11–21) after the first and 13 days (10–20) after the second AHCT. Platelets recovered at a median of 16 days after both procedures. Considering other factors, such as disease status, conditioning and HPC dose, this single institution data demonstrated no reduction in the potency of HPC after long-term storage.
Date Issued
2017-06-26
Date Acceptance
2017-04-29
Citation
Bone Marrow Transplantation, 2017, 52, pp.1599-1601
ISSN
1476-5365
Publisher
Nature Publishing Group
Start Page
1599
End Page
1601
Journal / Book Title
Bone Marrow Transplantation
Volume
52
Copyright Statement
Copyright © 2017, Rights Managed by Nature Publishing Group
Sponsor
Imperial College Trust
Imperial College Trust
Imperial College Trust
National Institute for Health Research
Grant Number
PC3165 01/08/2003
070904JA
PC2821ICT
NF-SI-0611-10275
Subjects
1103 Clinical Sciences
Immunology
Publication Status
Published
Date Publish Online
2017-06-26