PMID- 26574891 OWN - NLM STAT- MEDLINE DCOM- 20170302 LR - 20220409 IS - 1437-4331 (Electronic) IS - 1434-6621 (Linking) VI - 54 IP - 7 DP - 2016 Jul 1 TI - A fast and simple method for detecting and quantifying donor-derived cell-free DNA in sera of solid organ transplant recipients as a biomarker for graft function. PG - 1147-55 LID - 10.1515/cclm-2015-0622 [doi] AB - BACKGROUND: Timely detection of graft rejection is an important issue in the follow-up care after solid organ transplantation. Until now, biopsy has been considered the "gold standard" in the diagnosis of graft rejection. However, non-invasive tests such as monitoring the levels of cell-free DNA (cfDNA) as a sensitive biomarker for graft integrity have attracted increasing interest. The rationale of this approach is that a rejected organ will lead to a significant release of donor-derived cfDNA, which can be detected in the serum of the transplant recipient. METHODS: We have developed a novel quantitative real-time PCR (qPCR) approach for detecting an increase of donor-derived cfDNA in the recipient's serum. Common insertion/deletion (InDel) genetic polymorphisms, which differ between donor and recipient, are targeted in our qPCR assay. In contrast to some other strategies, no specific donor/recipient constellations such as certain gender combinations or human leukocyte antigen (HLA) discrepancies are required for the application of our test. RESULTS: The method was first validated with serial dilutions of serum mixtures obtained from healthy blood donors and then used to determine donor-derived cfDNA levels in patients' sera within the first 3 days after their kidney transplantation had been performed. CONCLUSIONS: Our method represents a universally applicable, simple and cost-effective tool which can potentially be used to detect graft dysfunction in transplant recipients. FAU - Adamek, Martina AU - Adamek M FAU - Opelz, Gerhard AU - Opelz G FAU - Klein, Katrin AU - Klein K FAU - Morath, Christian AU - Morath C FAU - Tran, Thuong Hien AU - Tran TH LA - eng PT - Comparative Study PT - Journal Article PL - Germany TA - Clin Chem Lab Med JT - Clinical chemistry and laboratory medicine JID - 9806306 RN - 0 (Biomarkers) RN - 9007-49-2 (DNA) SB - IM MH - Biomarkers/*blood MH - *Blood Donors MH - Case-Control Studies MH - DNA/*blood/genetics MH - Graft Rejection/blood/*diagnosis/etiology MH - Humans MH - Kidney Diseases/surgery MH - Kidney Transplantation/*adverse effects MH - Real-Time Polymerase Chain Reaction/*methods MH - Transplant Recipients EDAT- 2015/11/18 06:00 MHDA- 2017/03/03 06:00 CRDT- 2015/11/18 06:00 PHST- 2015/07/01 00:00 [received] PHST- 2015/10/17 00:00 [accepted] PHST- 2015/11/18 06:00 [entrez] PHST- 2015/11/18 06:00 [pubmed] PHST- 2017/03/03 06:00 [medline] AID - /j/cclm.ahead-of-print/cclm-2015-0622/cclm-2015-0622.xml [pii] AID - 10.1515/cclm-2015-0622 [doi] PST - ppublish SO - Clin Chem Lab Med. 2016 Jul 1;54(7):1147-55. doi: 10.1515/cclm-2015-0622.