Correction to: Nature Medicine https://doi.org/10.1038/s41591-026-04241-9, published online 11 March 2026. In the version of the article initially published, in Fig. 4, the checkmarks in the top two rows in the “Good DC quality?” column should have been X’s. This has now been corrected in the HTML and PDF versions of the article. About this article Haanen, J.B., Schumacher, T.N.M., Kagan, J.C. et al. Publisher Correction: Clinical development of cancer vaccines. Nat Med (2026).