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  • Title: Evaluation of parameters obtained from the Sysmex XN-2000 for predicting the recovery of the absolute neutrophil count and platelets after hematopoietic stem cell transplantation.
    Author: Park SH, Park CJ, Kim MJ, Han MY, Lee BR, Cho YU, Jang S, Kwon SW, Kim DY, Lee JH, Lee JH, Lee KH.
    Journal: Int J Lab Hematol; 2016 Apr; 38(2):198-208. PubMed ID: 26834006.
    Abstract:
    INTRODUCTION: We analyzed abilities of parameters from Sysmex XN-2000 (Sysmex, Kobe, Japan) to predict absolute neutrophil count (ANC) and platelet recovery after hematopoietic stem cell transplantation (HSCT) in patients with hematologic malignancies. METHODS: We prospectively analyzed 911 follow-up peripheral blood samples from 44 HSCT-performed patients and evaluated the performances of the following parameters: WBC, immature granulocyte (IG), hematopoietic stem and progenitor cells (HPC), immature reticulocyte fraction (IRF), immature platelet fraction (IPF), platelet distribution width (PDW), mean platelet volume (MPV), and platelet larger cell ratio (P-LCR). RESULTS: When compared to four other parameters, the identification of initiation in IG (%)/HPC (%) increase enabled earlier prediction of ANC recovery to >500/μL and >1000/μL with more time benefit of 3.5-6.5 days/2.0-5.0 days and 3.0-6.0 days/2.0-5.0 days, respectively. When compared to IPF (%), the identification of initiation in PDW, MPV, and P-LCR (%) increase enabled earlier prediction of platelet recovery to >20 000/μL and >50 000/μL with more time benefit of 2.5-3.5 days and 2.0-3.0 days, respectively. However, the standard deviation of time benefit obtained from IG (%)/HPC (%)/PDW/MPV/P-LCR (%) was consistently large (3.0-4.3 days). CONCLUSIONS: There is a systematic pattern where a rise in most of the studied parameters can be observed in most patients before ANC/platelet recovery. However, the interindividual variation between the time of rise of these parameters and ANC/platelet recovery is large, and therefore, using these parameters to predict recovery in the individual patient is probably not meaningful in the clinical setting.
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