Opal Sandy was born deaf but can now hear her mom telling her a story after a revolutionary new gene therapy treatment.
Andrew Matthews - PA Images/Getty Images
- Opal Sandy, a British toddler, was born deaf due to a faulty gene.
- In a groundbreaking gene therapy trial, she has now regained her hearing.
- The trial involved injecting a harmless virus containing the correct gene into her ear.
A deaf toddler has had her hearing restored after being the first patient treated in a gene therapy trial.