Categories: Health

Gene-Editing Success Promises Prevention For Inherited Diseases

Scientists have, for the first time, corrected a disease-causing mutation in early stage human embryos with gene editing. The technique, which uses the CRISPR-Cas9 system, corrected the mutation for a heart condition at the earliest stage of embryonic development so that the defect would not be passed on to future generations.

The work, which is described in Nature on August 2, 2017, is a collaboration between the Salk Institute, Oregon Health and Science University (OHSU), United States (US), and Korea’s Institute for Basic Science and could pave the way for improved in vitro fertilization (IVF) outcomes as well as eventual cures for some of the thousands of diseases caused by mutations in single genes.

“Thanks to advances in stem cell technologies and gene editing, we are finally starting to address disease-causing mutations that impact potentially millions of people,” says Juan Carlos Izpisua Belmonte, a professor in Salk’s Gene Expression Laboratory and a corresponding author of the paper. “Gene editing is still in its infancy so even though this preliminary effort was found to be safe and effective, it is crucial that we continue to proceed with the utmost caution, paying the highest attention to ethical considerations.”

Though gene-editing tools have the power to potentially cure a number of diseases, scientists have proceeded cautiously, in part to avoid introducing unintended mutations into the germ line (cells that become eggs or sperm). Izpisua Belmonte is uniquely qualified to speak to the ethics of genome editing in part because, as a member of the committee on human gene editing of the National Academies of Sciences, Engineering and Medicine, he helped author the 2016 roadmap “Human Genome Editing: Science, Ethics, and Governance.” The research in the current study is fully compliant with recommendations made in that document, and adheres closely to guidelines established by OHSU’s Institutional Review Board and additional ad-hoc committees set up for scientific and ethical review.

 

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