Correction to: Nature Reviews Bioengineering https://doi.org/10.1038/s44222-023-00063-3. Published online 11 May 2023.

In the originally published version of this article, in Table 1, the countries listed for clinical trials NCT05378048, NCT05177432, NCT04279509 and NCT05381038 were incorrect and have been amended to read Hong Kong, Singapore, Singapore and Singapore, respectively, in the HTML and PDF versions of the article.