Nature Reviews Gastroenterology & Hepatology 14, 269–278 (2017)

In the version of this Review published online and in print, representation of the target for the drugs ustekinumab, risankizumab and MEDI2070 were not accurate in Figure 3 and should have highlighted that ustekinumab targets IL-12 and IL-23, whereas MEDI2070 and risankizumab both act on IL-23. The error has been corrected for the HTML and PDF versions of the article.