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논문 기본 정보

자료유형
학술저널
저자정보
Kim Jieun (Department of Laboratory Medicine Soonchunhyang University College of Medicine Seoul Korea) Kim Dong-Moung (The Catholic University of Korea) Park Yu Jin (Department of Laboratory Medicine Yonsei University College of Medicine Seoul Korea) Lee Seung-Tae (Department of Laboratory Medicine Yonsei University College of Medicine Seoul Korea) Kim Hyon-Suk (Department of Laboratory Medicine Yonsei University College of Medicine Seoul Korea) Kim Myoung Soo (Department of Surgery Yonsei University College of Medicine Seoul KoreaResearch Institute for Trans) Kim Beom Seok (Research Institute for Transplantation Yonsei University College of Medicine Seoul KoreaDivision of) Choi Jong Rak (Department of Laboratory Medicine Yonsei University College of Medicine Seoul Korea)
저널정보
대한진단검사의학회 Annals of Laboratory Medicine Annals of Laboratory Medicine 제41권 제5호
발행연도
2021.9
수록면
469 - 478 (10page)
DOI
10.3343/alm.2021.41.5.469

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Background: Approximately 10%?20% of kidney transplant (KT) recipients suffer from acute rejection (AR); thus, sensitive and accurate monitoring of allograft status is recommended. We evaluated the clinical utility of donor-derived DNA (dd-DNA) detection in the urine of KT recipients as a non-invasive means for diagnosing AR. Methods: Urine samples serially collected from 39 KT recipients were tested for 39 single-nucleotide variant loci selected according to technical criteria (i.e., high minor allele frequency and low analytical error) using next-generation sequencing. The fraction of dd-DNA was calculated and normalized by the urine creatinine (UCr) level (%dd-DNA/UCr). The diagnostic performance of %dd-DNA/UCr for AR was assessed by ROC curve analysis. Results: There was an increasing trend of %dd-DNA/UCr in the AR group before subsequent graft injury, which occurred before (median of 52 days) histological rejection. The serum creatinine (SCr) level differed significantly between the AR and non-AR groups at two and four months of follow-up, whereas %dd-DNA/UCr differed between the groups at six months of follow-up. The combination of %dd-DNA/UCr, SCr, and spot urine protein (UPtn)/UCr showed high discriminating power, with an area under the ROC curve of 0.93 (95% confidence interval: 0.81?1.00) and a high negative predictive value of 100.0%. Conclusions: Although the dd-DNA?based test cannot eliminate the need for biopsy, the high negative predictive value of this marker could increase the prebiopsy probability of detecting treatable injury to make biopsy an even more effective diagnostic tool.

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