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A 3-year-old girl with severe hearing loss gained normal hearing after experimental gene therapy, marking a major breakthrough in a global clinical trial.
A 3-year-old girl, Opal Sandy, born with profound hearing loss due to an OTOF gene mutation, has regained normal hearing after receiving experimental gene therapy in 2023 at 11 months old.
The treatment, part of a Regeneron-led clinical trial for DB-OTO gene therapy, involved injecting a functional gene copy into her right cochlea while implanting a device in her left ear.
Two years later, she hears clearly without relying on the implant, a breakthrough reported by her parents.
Among 12 trial participants, 11 showed significant hearing improvements within weeks, with no serious side effects.
The trial continues in the U.K., U.S., Spain, and Germany, enrolling children under 18.
Una niña de 3 años con pérdida auditiva grave obtuvo audición normal después de la terapia genética experimental, marcando un gran avance en un ensayo clínico mundial.