Satellite Banner
Scientific Community
Become a Member | Sign in
Home>News>This Article

Researchers Develop Rapid, Cost-Effective Early Detection Method for Organ Transplant Injury

Published: Thursday, August 29, 2013
Last Updated: Thursday, August 29, 2013
Bookmark and Share
Chronix Biomedical and transplant expert Prof. Oellerich use Droplet Digital™ PCR to quantify early rejection biomarker.

A recently reported blood test for the early detection of organ transplant injury could enable more timely therapeutic intervention in transplant patients and thus help to avoid long-term damage. As described by scientists at the University Medical Center Göttingen and Chronix Biomedical, a molecular diagnostics company, the new method uses Bio-Rad Laboratories’ Droplet Digital PCR (ddPCR™) technology to overcome the obstacles of earlier tests, which were both time-consuming and costly. The method was presented at the American Association of Clinical Chemistry (AACC) 2013 annual meeting and has been accepted for publication inClinical Chemistry.

Approximately 28,000 organ transplantations (known as grafts) are performed each year in the U.S., with another 100,000 patients on waiting lists. However, transplant patients are often subject to organ rejection: acute rejection of liver transplants within three years is nearly 22 percent, while heart and lung rejection is close to 50 percent. In addition, nearly half of all of kidney transplants fail within ten years.

Graft-derived cell-free DNA (GcfDNA) in the circulation of transplant recipients is a potential rejection biomarker. But previous attempts to determine GcfDNA, which require parallel sequencing of donor and recipient DNA, are expensive and require a long turnaround and use of donor DNA. University Medical Center Göttingen and Chronix Biomedical researchers sought to develop a new method in an attempt to address these drawbacks.
Using ddPCR for a Fast, Cost-Effective Test

The researchers applied Bio-Rad’s ddPCR technology to quantify graft-derived cfDNA in recent liver transplant patients and in stable patients who had undergone a transplant procedure more than six months earlier. ddPCR technology allowed them to develop a cost-effective and fast laboratory test that detects cfDNA being released into the blood stream by dying cells from the transplanted organ.

“GcfDNA from dying graft cells is the most direct and sensitive indicator of organ rejection and we needed an instrument that could measure it,” said Chronix Biomedical’s chief technology officer and the study’s senior author, Ekkehard Schütz, MD, PhD. “ddPCR added an additional level of reliability and precision to traditional PCR.”
Sequencing methods typically require batch sampling, but by using ddPCR, researchers are able to run single samples. Additionally, this method is reducing test time from three days or more to one day, and reducing costs by 90 percent. The study authors were able to address the need for donor DNA by preselecting SNPs that ensure enough heterogeneity between donor and recipient. The new blood test can also deliver results up to several earlier than the conventional aspartate aminotransferase (AST) and bilirubin tests for liver transplantation rejection, with the potential for an immediate positive impact on patient care.

“We will now be able to detect subclinical rejection and early intervention may allow us to avoid a full-blown rejection,” said Michael Oellerich, MD, FACP, FRCPath and Lower Saxony distinguished professor of clinical chemistry at the University Medical Center Göttingen and the study’s principal investigator. “This test may be useful to personalize immunosuppression and to improve long-term outcomes.”

“Detecting nonhost cfDNA is the third example of the commercial potential of cfDNA diagnostics. Researchers will now be able to extend the applications from fetal cfDNA in maternal blood and personalized biomarkers for minimal residual disease in cancer to solid organ transplantation,” said Howard Urnovitz, PhD, Chronix Biomedical’s chief executive officer.

“We are looking forward to the improvements in precision medicine we can offer with ddPCR and this example in transplantation highlights the diagnostic value for the technology,” said Paula Stonemetz, director diagnostic business development for Bio-Rad Laboratories’ Digital Biology Center.

The study’s researchers were awarded a National Academy of Clinical Biochemistry (NACB) Distinguished Abstract Award at the 2013 AACC annual conference. The results are part of a larger planned study to determine if cfDNA is the earliest indication of a transplant organ rejection.

Further Information
Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 2,600+ scientific posters on ePosters
  • More than 3,800+ scientific videos on LabTube
  • 35 community eNewsletters

Sign In

Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

Presentations at the AACR Annual Meeting to Highlight Advances in Cancer Research Made Possible by Bio-Rad’s Droplet Digital™ PCR Technology
Tailoring Treatments and Tracking Mutations with Liquid Biopsies possible with ddPCR™ technology
Wednesday, April 22, 2015
Bio-Rad Reports Fourth-Quarter and Full-Year 2014 Financial Results
Company has introduced its S3e™ Cell Sorter during the quarter.
Saturday, March 07, 2015
Accurate Determination of Copy Number States for Multiallelic Copy Number Variations
Researchers use next-generation sequencing (NGS) and Bio-Rad’s Droplet Digital PCR (ddPCR™) technology to solve the technical challenge.
Tuesday, March 03, 2015
Awards for Bio-Rad's Protein Expression Products and Genomic Workflow Solutions
BioInformatics LLC has recognized Bio-Rad with two prestigious Life Science Industry Awards for “Best Protein Expression & Analysis Products” and “Best Workflow Solutions — Genomics.”
Monday, January 19, 2015
Bio-Rad Acquires Sequencing Technology Company GnuBIO
GnuBIO is a privately-held life sciences company that has developed a droplet-based DNA sequencing technology.
Friday, April 11, 2014
Droplet Digital PCR Enables Measurement of Potential Cancer Survival Biomarker
Study paves the way for further research into the role of TIL quantification in immunotherapy and as a cancer survival predictor.
Tuesday, December 10, 2013
A Brief RT-qPCR “Field Guide” for MIQE Adherence
Bio-Rad’s Sean Taylor and Eli Mrkusich have published a practical guide for MIQE compliance.
Monday, December 09, 2013
Accurate Detection of Extremely Rare Mitochondrial DNA Deletions Associated with Aging
The study published in Aging Cell identifies a new tool to accurately analyze extremely rare mitochondrial DNA deletions associated with a range of diseases and disorders as well as aging.
Thursday, September 05, 2013
Accurate Quantification of NGS Libraries
A study has found that Droplet Digital PCR (ddPCR™) can be used as an accurate and precise method for quality control of NGS libraries.
Tuesday, August 20, 2013
New Biomarker Could Reveal Alzheimer's Disease Years Before Onset
A new study has reported the identification of what may be the earliest known biomarker associated with the risk of developing Alzheimer's disease (AD).
Wednesday, August 14, 2013
Droplet Digital™ PCR Works for GMO Quantification
A study published in the journal PLOS ONE has found that Droplet Digital PCR technology is suitable for routine analysis of genetically modified organisms in food, feed and seeds.
Wednesday, May 08, 2013
Bio-Rad Receives Award for QX100 Droplet Digital PCR System
Company receives Frost & Sullivan 2012 North American Laboratory Researchers’ Choice: Future market leader of digital PCR technology award.
Thursday, March 14, 2013
Bio-Rad Receives North American Market Penetration Award
The award honors the company that has grown market share at the fastest rate in its industry, as measured by revenues or units sold.
Tuesday, November 20, 2012
Case Study Demonstrates Importance of MIQE for qPCR Data Analysis
Published by Bio-Rad Laboratories, Inc. this case study demonstrates how real-time PCR can lead to erroneous conclusions if the key steps set out in the MIQE guidelines are not followed.
Friday, February 17, 2012
Bio-Rad Acquires QuantaLife and Digital PCR Technology
Bio-Rad purchases QuantaLife for $162 million in cash plus potential future milestone payments.
Friday, October 07, 2011
Scientific News
New Virus Identified In Blood Supply
Scientists have discovered a new virus that can be transmitted through the blood supply.
Tracking Changes in DNA Methylation In Real Time At Single-Cell Resolution
Whitehead Institute researchers have developed a methodology to monitor changes in DNA methylation over time in individual cells.
DNA Alterations as Among Earliest to Occur in Lung Cancer Development
Genetic footprints of precancer detectable in some blood samples.
Bar-Coding Technique Opens Up Studies Within Single Cells
Scientists have developed a method for simultaneously imaging and identifying dozens of molecules within individual cells.
Scientists Learn How to Predict Plant Size
VIB and UGent scientists have developed a new method which allows them to predict the final size of a plant while it is still a seedling.
New Device Reduces Time to Diagnose Infections
A new diagnostic device created by a collaborative team of UA engineers and scientists may significantly reduce the amount of time necessary to diagnose tissue infections.
Surprising Mechanism Behind Antibiotic-Resistant Bacteria Uncovered
Now, scientists at TSRI have discovered that the important human pathogen Staphylococcus aureus, develops resistance to this drug by “switching on” a previously uncharacterized set of genes.
Researchers Develop qPCR Prognosis Test for NSCLC Patients
A nine-gene molecular prognostic index (MPI) for patients with early-stage non-small cell lung cancer (NSCLC) was able to provide accurate survival stratification and could potentially inform the use of adjuvant therapy in patients struggling with the disease.
Genome Wide Annotation of Primary miRNAs Reveals Novel Mechanisms
Researchers have devised a strategy for genome-wide annotation of primary miRNA transcripts, providing extensive new annotations in human and mouse, and shedding light on mechanisms of regulation of microRNA gene expression.
‘Fishing Expedition’ Nets Nearly Tenfold Increase in Number of Sequenced Virus Genomes
Newly developed computational tool finds 12,500 genomes of viruses that infect microbes.
Skyscraper Banner

Skyscraper Banner
Go to LabTube
Go to eposters
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
2,600+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
3,800+ scientific videos