Correction to: Nature Reviews Gastroenterology & Hepatology https://doi.org/10.1038/s41575-024-00981-6, published online 2 October 2024.

In the version of the article initially published, in the “Reassessing selectivity” section, the text now reading “…owing to the presence of specific glycoside hydrolase and transporter genes” originally read “…owing to the presence of specific glycosyl transferase and transporter genes” and has now been amended in the HTML and PDF versions of the article.