Cystic fibrosis is one of the most common genetic disorders, causing thick mucus build-up in the lungs and other parts of the body, breathing problems, and infection. Now, researchers have developed a gene-editing approach that efficiently corrects the most common mutation that causes cystic fibrosis, found in 85 percent of patients. With further development, it could pave the way for treatments that are administered only once and have fewer side effects. The new method precisely and durably corrects the mutation in human lung cells, restoring cell function to levels similar to that of Trikafta. 

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