Correction to: Nature Medicine https://doi.org/10.1038/s41591-018-0045-3, published online 25 June 2018.

In the version of this article originally published, the P statistic described in Fig. 3d was incorrect. It was described as “P < 22 × 10–16”. It should have been “P < 2.2 × 10–16”. Also, the “CD8+ Treg” label in Fig. 4f was incorrect. It should have been “CD4+ Treg”. The errors have been corrected in the HTML and PDF versions of this article.