Correction to: Nature Reviews Gastroenterology & Hepatology https://doi.org/10.1038/s41575-023-00793-0. Published online 23 May 2023.

In the version of this article originally published online, there was an error in the seventh paragraph: in the text now reading “Additionally, the half-life of etrasimod is shorter than ozanimod (~30 hours versus up to 11 days),” the half-life of etrasimod was originally given as “11 hours”. The error has been corrected in the HTML and PDF versions of the article.