Greenwood Genetic Center, Clemson share important genetic research news see more
Genetic networks define an individual’s unique characteristics that – coupled with lifestyle habits and other environmental factors – determine susceptibility to cancers, hypertension, high cholesterol, arthritis, diabetes, Alzheimer’s disease and numerous other ailments. The National Institutes of Health (NIH) has tasked Clemson University with unlocking these genetic codes through a new $10.6 million grant to establish the Center of Biomedical Research Excellence (COBRE) in Human Genetics in collaboration with the Greenwood Genetic Center (GGC).
The award funds an initial five-year phase of a COBRE, which can continue for 15 years, positioning the Clemson-GGC collaboration as a global leader in the scientific advancement of human genetics. The NIH COBRE program provides a long-term investment in the advancement of medical research around a central theme. This is NIH’s first COBRE specifically focused on human genetics.
Trudy Mackay, the Self Family Endowed Chair of Human Genetics, will lead the COBRE in Human Genetics along with Robert Anholt, provost’s distinguished professor of genetics and biochemistry, and Richard Steet, director of research at Greenwood Genetic Center (GGC).L-R: Robert Anholt, Trudy Mackay, Richard Steet
The Greenwood Genetic Center provides clinical services to more than 5,000 patients annually, and diagnostic laboratory testing, educational programs and research in medical genetics. Clemson’s Center for Human Genetics has collaborated closely with GGC since opening in 2018.
“Merging the expertise of Clemson’s genome science with the patient-driven focus of the Greenwood Genetic Center is very powerful,” Steet said. “The theme of this COBRE is comprehensive – covering common disorders like cardiovascular disease, cancer, neurodegenerative diseases as well as very rare genetic disorders. We take a lot of pride in that breadth, as it gives our collaborations and the efforts of this COBRE room to grow.”
At the heart of the COBRE in Human Genetics is a robust mentoring platform for early-career faculty. Leading scientists at several of the nation’s premier laboratories will serve as project mentors, including St. Jude Children’s Research Hospital, the National Cancer Institute, Duke University and the Center for Comparative Genomics and Bioinformatics at The Pennsylvania State University.
Initially, the COBRE in Human Genetics will feature four core research projects and numerous pilot projects. The following investigators lead the four core projects:
Andrei Alexandrov, assistant professor of genetics and biochemistry at Clemson, will analyze human nuclear long non-coding RNAs to identify potential targets for new treatments for cancer and viral diseases. A former scientist at Yale University, Alexandrov developed an ultra-high throughput method that enables the discovery of genes involved in human RNA surveillance.
Heather Flanagan-Steet, director of functional studies at the Greenwood Genetic Center, will study genetic mutations that can cause neurological and cognitive impairment, skeletal abnormalities and even early infant death. Her work on rare diseases largely involves the generation of zebrafish models to investigate gene function and disease pathogenesis. She pioneered the use of zebrafish to model rare inherited diseases.
Miriam Konkel, assistant professor of genetics and biochemistry at Clemson, will work to understand why and how transposable elements, sometimes called “jumping genes,” can move around the human genome and alter genetic expression. The movement of transposable elements may contribute to neurodegenerative diseases like Alzheimer’s.
Fabio Morgante, assistant professor of genetics and biochemistry at Clemson, will analyze genetic data from 500,000 people as part of a project to develop phenotypic models that can predict cardiovascular disease. His models will take into account ancestry, ethnicity and environmental factors that can affect disease susceptibility.
The COBRE in Human Genetics will support numerous pilot projects related to human genetics and expand its research as the COBRE progresses and attracts additional investigators.
The team is planning an annual symposium and a yearly retreat for the COBRE in Human Genetics participants to share knowledge and ideas. Already, renowned scientists worldwide, including members of the National Academy of Sciences, are participating in a monthly lecture series organized by the Center for Human Genetics.
“GGC is honored to be part of this first-ever NIH COBRE in the field of human genetics,” said Steve Skinner, MD, GGC Director. “By combining the Greenwood Genetic Center’s 47 years of expertise in providing quality medical genetics services with the research talent and computational power of the Clemson Center for Human Genetics, patients and families impacted by both common and rare genetic diagnoses will reap the benefits.”
“This grant truly raises the profile of both Clemson University and the Greenwood Genetic Center, and I am proud that our collaboration has the potential to make a difference for so many people. It is powerful to think of how many lives might be saved by learning more about the genetics behind some of these devastating diseases,” said Clemson University President Jim Clements.
Research reported in this publication is supported by the National Institute of General Medical Sciences of the National Institutes of Health under Award Number P20GM139769. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
Study shows diagnostic test effective for providing conclusive genetic results see more
GREENWOOD, SC – The Greenwood Genetic Center (GGC), working with collaborators at Lawson Health Research Institute in Canada and the University of Amsterdam, published a study this month that provides clinical validation of EpiSign, a molecular genomics test that diagnoses rare, heritable neurodevelopmental conditions. GGC has been the sole US laboratory provider of this novel diagnostic test since 2019.
EpiSign analyzes changes that affect gene expression rather than the gene sequence. Researchers have found that certain genetic disorders display unique genomic patterns, or epigenetic signatures, allowing for a diagnosis through EpiSign when traditional genetic testing has been uninformative.
The laboratory testing in the US is performed at GGC while the analysis of the results is performed using machine learning at Lawson where the EpiSign Knowledge Database was developed. This database compiles information on rare genetic diseases using laboratory analyses of the epigenetic signature from patients with suspected genetic abnormalities.
The current study analyzed data from early EpiSign testing to validate the ability of the novel test to make a diagnosis. Epigenetic signatures have been identified for over 40 genetic disorders.
The analysis studied EpiSign test performance and diagnostic yield in 207 subjects from two different cohorts. A targeted group included patients with previous genetic findings that were ambiguous or inconclusive. The second screening group was those with clinical findings consistent with hereditary neurodevelopment syndromes but with no previous genetic findings.
“Of the 207 subjects tested, 57 were positive for a diagnostic episignature including 48 in the targeted cohort, and 9 in the screening cohort. Only four remained inconclusive after EpiSign analysis,” says Dr. Bekim Sadikovic, lead researcher at Lawson and Scientific and Clinical Director of the Verspeeten Clinical Genome Centre at London Health Sciences Centre (LHSC). “This gives us strong evidence for the clinical use of EpiSign, as well as the ability to provide conclusive findings in the majority of subjects tested.”
While currently there are limited treatment options associated with many of these conditions, providing a diagnosis can help physicians better predict the course of the disease, and allows for better planning and support for the patient. EpiSign is the only test in the world that has been clinically validated for epigenetic testing for these types of genetic disorders, and in the US, is only available through GGC.
“Patients with rare diseases often wait years and undergo numerous exams and tests before receiving a correct diagnosis, if one is found at all,” says Matthew Tedder, PhD, staff scientist at the Greenwood Genetic Center, who was involved in the study. “EpiSign provides an additional high-yield diagnostic tool for clinicians to include in their evaluation of patients with undiagnosed diseases, providing better medical management for patients and hope for their families.”
The study, “Clinical epigenomics: genome-wide DNA methylation analysis for the diagnosis of Mendelian disorders", is published in February’s Genetics in Medicine.
For more information about EpiSign, visit, www.ggc.org/EpiSign.
Greenwood, South Carolina's globally recognized genetics center is further investing... see more
Greenwood Genetic Center has invested more than $1.75 million in laboratory equipment and a new on-site aquaculture facility that the organization says is the largest zebrafish facility in the state.
The new equipment includes a NovaSeq DNA sequencing system and a confocal microscopy system. The Illumina NovaSeq 6000 System offers high-throughput sequencing across a broad range of applications. The NovaSeq also meets the research needs of both the center and the Clemson Center for Human Genetics. Read the full news release here.