Correction to: Gene Therapy https://doi.org/10.1038/s41434-024-00470-0, published online 29 July 2024

An incorrect year was given in the text.

The 9th paragraph, which starts “From 1994 Andy’s group was based at the Centre for Haematology,…”, should instead say “From 2004 Andy’s group was based at the Centre for Haematology,…”.