Volume 21, Issue 1 e12841
ORIGINAL ARTICLE

Factors associated with bone marrow stem cell yield for pediatric allogeneic stem cell transplantation: The impact of donor characteristics

Ali Fettah

Corresponding Author

Ali Fettah

Department of Pediatric Hematology-Oncology and Bone Marrow Transplantation, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey

Correspondence

Ali Fettah, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey.

Email: [email protected]

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Namık Özbek

Namık Özbek

Department of Pediatric Hematology-Oncology and Bone Marrow Transplantation, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey

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Meltem Özgüner

Meltem Özgüner

Stem Cell Research Laboratory, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey

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Fatih Azık

Fatih Azık

Department of Pediatric Hematology-Oncology and Bone Marrow Transplantation, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey

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Pamir Işık

Pamir Işık

Department of Pediatric Hematology-Oncology and Bone Marrow Transplantation, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey

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Zekai Avcı

Zekai Avcı

Department of Pediatric Hematology-Oncology and Bone Marrow Transplantation, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey

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Neşe Yaralı

Neşe Yaralı

Department of Pediatric Hematology-Oncology and Bone Marrow Transplantation, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey

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Duygu Uçkan

Duygu Uçkan

Department of Pediatric Hematology-Oncology and Bone Marrow Transplantation, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey

Stem Cell Research Laboratory, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey

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Bahattin Tunç

Bahattin Tunç

Department of Pediatric Hematology-Oncology and Bone Marrow Transplantation, Ankara Children Hematology Oncology Research Hospital, Ankara, Turkey

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First published: 04 November 2016
Citations: 6

Abstract

The aim of this study was to investigate the effects of donor characteristics on CD34+ cell yield in BM harvest. Between April 2010 and November 2013, consecutive donors who underwent BM harvesting in our BM transplantation unit were retrospectively investigated. Donors were classified into two groups: those who donated BM without mobilization (steady-state BM donors) and those who received G-CSF for stem cell mobilization (G-CSF-primed BM donors). Donor characteristics (age, gender, race, body weight, BMI, and laboratory factors including donor's leukocyte, platelet, and monocyte) and their relationship with total nuclear cell and CD34+ cell numbers has been evaluated. A total of 64 healthy related donors (29 males/35 females, median age 11.2 years; 49 [76.6%] younger than 18 and 36 [56.3%] younger than 12 years) were included in the study. The median CD34+ cell yield in the harvest was 0.12×106/L (0.02-0.21) in SS-BM donors and 0.18×106/L (0.09-0.67) in GP-BM donors (P=.03). Median of CD34+ cell count given to recipients was 2.6×106/recipient body weight (1.3-19.3) in SS-BM yields and 3.8×106/recipient body weight (1.1-10.2) in GP-BM yields, respectively. Multiple regression analysis showed that donor height and pre-G-CSF platelet were the most important parameters to obtain a sufficient BM harvest. Our data suggest that the shorter donors and the donors with higher thrombocyte counts may offer more hematopoietic stem cell. The height and thrombocyte count of the donors should be taken into consideration before planning the targeted CD34+ cell count especially for pediatric donors.

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