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Yazal Erdem A, Özyörük D, Ok Bozkaya İ, Çakmakcı S, Emir S, Demir HA, Özgüner HM, Ergürhan İlhan İ, Özbek NY. Autologous peripheral blood stem cell mobilization and apheresis in pediatric patients with cancer: A single-center report of 64 procedures. Pediatr Transplant 2024; 28:e14751. [PMID: 38659194 DOI: 10.1111/petr.14751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 02/24/2024] [Accepted: 03/25/2024] [Indexed: 04/26/2024]
Abstract
BACKGROUND The published experience concerning autologous peripheral blood stem cell collection in children is very limited. METHODS The data of pediatric patients who underwent autologous stem cell mobilization and apheresis between January 2011 and April 2020 were analyzed retrospectively. RESULTS We studied retrospectively 64 mobilization and apheresis procedures in 48 pediatric patients (34 males, 14 females), mean age of 7.31 ± 5.38 (range, 1.5-19.7) years, the underlying disease was mostly neuroblastoma (NBL). The body weight of 21 patients (43.75%) was 15 kg or less. The targeted autologous peripheral stem cell apheresis (APSCA) was successfully achieved in 98% of patients. Neuroblastoma patients were younger than the rest of the patients and underwent apheresis after receiving fewer chemotherapy cycles than others and all of them mobilized within the first session successfully. Plerixafor was added to mobilization in nine heavily pretreated patients (18.7%), median two doses (range, 1-4 doses). 11 patients (22.9%) underwent radiotherapy (RT) before mobilization with doses of median 24 Gy (range, 10.8-54.0 Gy). Patients with RT were older at the time of apheresis and had received more chemotherapy courses than patients without RT. As a result, patients with a history of RT had significantly lower peripheral CD34+ cells and CD34+ yields than those without RT. In 17 patients (35.4%), 22 different complications were noted. The most common complications were catheter-related infections (n:10, 20.8%), followed by catheter-related thrombosis in eight patients (16.7%). CONCLUSIONS Patients who had far less therapy before apheresis were more likely to mobilize successfully. Our study provides a detailed practice approach including complications during APSCA aiming to increase the success rates of apheresis in transplantation centers.
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Affiliation(s)
- Arzu Yazal Erdem
- Department of Pediatric Hematology and Oncology, Ankara Bilkent City Hospital, University of Health Sciences Turkey, Ankara, Turkey
| | - Derya Özyörük
- Department of Pediatric Hematology and Oncology, Ankara Bilkent City Hospital, University of Health Sciences Turkey, Ankara, Turkey
| | - İkbal Ok Bozkaya
- Department of Pediatric Hematology and Oncology, Ankara Bilkent City Hospital, University of Health Sciences Turkey, Ankara, Turkey
| | - Selma Çakmakcı
- Department of Pediatric Hematology and Oncology, Ankara Bilkent City Hospital, University of Health Sciences Turkey, Ankara, Turkey
| | - Suna Emir
- Department of Pediatrics, Atılım University Faculty of Medicine, Ankara, Turkey
| | - Hacı Ahmet Demir
- Department of Pediatric Hematology and Oncology, Memorial Private Hospital, Ankara, Turkey
| | - Habibe Meltem Özgüner
- Department of Histology and Embriology, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - İnci Ergürhan İlhan
- Department of Pediatric Hematology and Oncology, Ankara Bilkent City Hospital, University of Health Sciences Turkey, Ankara, Turkey
| | - Namık Yaşar Özbek
- Department of Pediatric Hematology and Oncology, Ankara Bilkent City Hospital, University of Health Sciences Turkey, Ankara, Turkey
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Furlong E, Jensen J, Woodard M, Griffiths K, Knight G, Sturm M, Kerr F, Gough H, Bear N, Carter TL, Cole CH, Kotecha RS, Ramachandran S. Optimized peripheral blood progenitor cell mobilization for autologous hematopoietic cell transplantation in children with high-risk and refractory malignancies. Pediatr Transplant 2020; 24:e13602. [PMID: 31631445 DOI: 10.1111/petr.13602] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/15/2019] [Accepted: 09/19/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Autologous hematopoietic stem cell transplantation (aHSCT) using hematopoietic progenitor cells (HPCs) has become an important therapeutic modality for patients with high-risk malignancies. Current literature on standardized method for HPC apheresis in children is sparse and failure rate reported as high as 30%. PATIENTS/METHODS A retrospective study of 125 pediatric patients with high-risk malignancies undergoing aHSCT in Western Australia between 1997 and 2016 was conducted. RESULTS Mobilization was achieved by means of chemotherapy and granulocyte colony-stimulating factor (G-CSF). Patients underwent apheresis the day after CD34+ counts reached ≥20/µL and an additional dose of G-CSF. Peripheral arterial and intravenous lines were inserted in pediatric intensive care unit under local anesthetic and/or sedation, omitting the need for general anesthesia as well as facilitating an uninterrupted apheresis flow. Larger apheresis total blood volumes were processed in patients weighing ≤20 kg. The minimal dose of ≥2 × 106 CD34+ cells/kg was successfully collected in 98.4% of all patients. The optimal dose of 3-5 × 106 CD34+ cells/kg was collected in 96% of patients scheduled for a single aHSCT, 87.5% for tandem, and 100% for triple aHSCT. All HPC collections were completed in one apheresis session. Mobilization after ≤3 chemotherapy cycles and cycles including cyclophosphamide resulted in a significantly higher yield of CD34+ cells. CONCLUSION Our approach to HPC mobilization by means of chemotherapy and single myeloid growth factor combined with optimal collection timing facilitated by continuous apheresis flow resulted in highly effective HPC harvest in children and adolescents with high-risk cancers.
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Affiliation(s)
- Eliska Furlong
- Department of Paediatric and Adolescent Haematology, Oncology, Blood and Marrow Transplantation, Perth Children's Hospital, Perth, WA, Australia
| | - Jesper Jensen
- PathWest Laboratory Medicine WA, Perth, WA, Australia
| | - Mark Woodard
- Paediatric Intensive Care Unit, Perth Children's Hospital, Perth, WA, Australia.,School of Nursing, Midwifery and Paramedicine, Curtin University, Perth, WA, Australia
| | - Katherine Griffiths
- Paediatric Intensive Care Unit, Perth Children's Hospital, Perth, WA, Australia
| | - Geoff Knight
- Paediatric Intensive Care Unit, Perth Children's Hospital, Perth, WA, Australia.,Division of Paediatrics, School of Medicine, University of Western Australia, Perth, WA, Australia
| | - Marian Sturm
- Cell and Tissue Therapy, Royal Perth Hospital, Perth, WA, Australia
| | - Fiona Kerr
- Department of Paediatric and Adolescent Haematology, Oncology, Blood and Marrow Transplantation, Perth Children's Hospital, Perth, WA, Australia
| | - Hazel Gough
- Department of Paediatric and Adolescent Haematology, Oncology, Blood and Marrow Transplantation, Perth Children's Hospital, Perth, WA, Australia
| | - Natasha Bear
- Department of Clinical Research and Education, Perth Children's Hospital, Perth, WA, Australia
| | - Tina L Carter
- Department of Paediatric and Adolescent Haematology, Oncology, Blood and Marrow Transplantation, Perth Children's Hospital, Perth, WA, Australia.,PathWest Laboratory Medicine WA, Perth, WA, Australia.,Division of Paediatrics, School of Medicine, University of Western Australia, Perth, WA, Australia
| | - Catherine H Cole
- Division of Paediatrics, School of Medicine, University of Western Australia, Perth, WA, Australia.,Paediatric Haematology and Oncology, Sidra Medicine, Doha, Qatar
| | - Rishi S Kotecha
- Department of Paediatric and Adolescent Haematology, Oncology, Blood and Marrow Transplantation, Perth Children's Hospital, Perth, WA, Australia.,Division of Paediatrics, School of Medicine, University of Western Australia, Perth, WA, Australia.,Division of Children's Leukaemia and Cancer Research, Telethon Kids Cancer Centre, Telethon Kids Institute, Perth, WA, Australia
| | - Shanti Ramachandran
- Department of Paediatric and Adolescent Haematology, Oncology, Blood and Marrow Transplantation, Perth Children's Hospital, Perth, WA, Australia.,Division of Paediatrics, School of Medicine, University of Western Australia, Perth, WA, Australia
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