학술논문
CD34陽性細胞測定における施設間差の検討 / INTER-LABORATORY COMPARISON OF CD34+ CELL ENUMERATION
Document Type
Journal Article
Author
Hisashi Sakamaki; Kazuteru Ohashi; Kyoko Haraguchi; Masanori Fukawa; Minoko Takanashi; Miyuki Ito; Ryuji Tanosaki; Shigeyoshi Makino; Shigeyoshi Yoshida; Shuichi Taniguchi; Takehiko Mori; Tomoe Uemura; Yoshiki Okuyama; Yukiko Kunitomo; 上村 知恵; 伊藤 みゆき; 原口 京子; 吉田 茂久; 國友 由紀子; 坂巻 壽; 大橋 一輝; 奧山 美樹; 府川 正儀; 森 毅彦; 牧野 茂義; 田野崎 隆二; 谷口 修一; 高梨 美乃子
Source
日本輸血細胞治療学会誌 / Japanese Journal of Transfusion and Cell Therapy. 2016, 62(1):32
Subject
Language
Japanese
ISSN
1881-3011
1883-0625
1883-0625
Abstract
Accurate enumeration of CD34+ cells is crucial for peripheral blood stem cell transplantation. However, there is currently no standardization or external quality control of CD34+ cell enumeration technics in Japan. To assess data variability among laboratories, we quantified CD34+ cells isolated from the same fresh peripheral blood stem cell samples at six expert laboratories on the same day that they were harvested from patients. The coefficient of variation was less than 25%, and data from all laboratories were closely correlated. However, data obtained from one laboratory were significantly lower than data from other laboratories. Inappropriate methods of erythrocyte lysis and cell washing-rather than non-ISHAGE gating or dual platform methods-may have caused these significantly lower counts. However, expected results were obtained when fixed control cells were enumerated. External quality assessment using appropriate samples and standardization of methodologies for CD34+ enumeration are important for reducing inter-laboratory variation in results.