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논문 기본 정보

자료유형
학술저널
저자정보
Hwang Sang Mee (Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, KoreaDepartment of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea) Oh Inseong (Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea) Kwon Seok Ryun (Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, KoreaDepartment of Laboratory Medicine, Seoul National University Hospital, Seoul, Korea) Lee Jee-Soo (Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, KoreaDepartment of Laboratory Medicine, Seoul National University Hospital, Seoul, Korea) Seong Moon-Woo (Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea)
저널정보
대한진단검사의학회 Annals of Laboratory Medicine Annals of Laboratory Medicine 제44권 제4호
발행연도
2024.7
수록면
354 - 358 (5page)
DOI
10.3343/alm.2023.0412

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Measurable residual disease (MRD) testing, a standard procedure in B-lymphoblastic leukemia (B-ALL) diagnostics, is assessed using multiparametric flow cytometry (MFC) and next-generation sequencing (NGS) analysis of immunoglobulin gene rearrangements. We evaluated the concordance between eight-color, two-tube MFC-MRD the LymphoTrack NGS-MRD assays using 139 follow-up samples from 54 pediatric patients with B-ALL. We also assessed the effect of hemodilution in MFC-MRD assays. The MRD-concordance rate was 79.9% (N=111), with 25 (18.0%) and 3 (2.2%) samples testing positive only by NGSMRD (MFC−NGS+MRD) and MFC-MRD (MFC+NGS−MRD), respectively. We found a significant correlation in MRD values from total nucleated cells between the two methods (r=0.736 [0.647–0.806], P <0.001). The median MRD value of MFC−NGS+MRD samples was estimated to be 0.0012% (0.0001%–0.0263%) using the NGS-MRD assays. Notably, 14.3% of MFC−NGS+MRD samples showed NGS-MRD values below the limit of detection in the MFC-MRD assays. The percentages of hematogones detected in MFC-MRD assays significantly differed between the discordant and concordant cases (P <0.001). MFC and NGS-MRD assays showed relatively high concordance and correlation in MRD assessment, whereas the NGS-MRD assay detected MRD more frequently than the MFC-MRD assay in pediatric B-ALL. Evaluating the hematogone percentages can aid in assessing the impact of sample hemodilution.

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