Nature Reviews Immunology (2018) https://doi.org/10.1038/s41577-018-0014-6 Published online 09 May 2018

In the initially published version of this article online in advance of print, a reference (Ajina, A. & Maher, J. Prospects for combined use of oncolytic viruses and CAR T-cells. J. Immunother. Cancer 5, 90 (2017)) was omitted in error from the following sentence: “The ability of oncolytic viruses to increase the expression of MHC class I molecules by cancer cells is also predicted to enhance ACT with TILs or TCR-engineered and chimeric antigen receptor (CAR) T cells that target tumour-specific antigens”. This has been corrected in the HTML and PDF versions of the manuscript.