Nature Reviews Rheumatology 14, 53–60 (2018)

In the version of this article originally published, the name of one of the authors, Peter Schulz-Knappe, was incorrectly given as Peter Schulze-Knappe. In addition, Mark Coles and James Butler were erroneously omitted from the list of members of the RA-MAP Consortium. These errors have now been corrected in the PDF and HTML versions of the article.