Nat. Biotechnol. 36, 393–401 (2018); published online 9 May 2018; corrected after print 26 June and 18 July 2018

In the version of this article initially published, on p. 395, right-hand column, Celgene was said to have bought Delinia four months after founding, rather than four months after series A. The error has been corrected in the HTML and PDF versions of the article.

In the version of this article initially published, on p. 395, right-hand column, Plan les Ouates was mislocated in France; it is in Switzerland. The error has been corrected in the HTML and PDF versions of the article.