Right now, in hospitals around the world, patients are being cured of diseases once thought untreatable.

The reason? A gene therapy revolution means that what was once the stuff of science fiction is now becoming a reality.

One person who’s been at the centre of this medical revolution is Dr Bobby Gaspar, a professor of paediatrics and immunology at Great Ormond Street Hospital and University College London, and CEO of Orchard Therapeutics.

Bobby guides us through the complex world of gene therapy, explaining what it is, what it can do and where it’s going.

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