Three-year-old Oliver Chu has amazed doctors and his parents after he became the world’s first patient of a pioneering gene therapy to treat Hunter syndrome.
Hunter syndrome – or MPSII – is a rare, inherited condition that causes progressive damage to the body and brain.
The effects are sometimes described as a type of childhood dementia.
Ollie’s dad, Ricky Chu, and the trial’s co-lead, Professor Simon Jones, joined Sally and Jon on the BBC Breakfast sofa and described the ”wonderful” progress Ollie has made in the nine months since the gene therapy.
