Correction to: British Journal of Cancer https://doi.org/10.1038/s41416-020-01229-1, published online 26 January 2021

Since the publication of this paper, the authors have noticed an error in the Abstract where the value for the 2-year overall survival for patients receiving anti-PD-1 antibodies was incorrectly given as 85.4% (95% CI: 58.1–73.6) rather than the correct value of 65.4% (95% CI: 58.1–73.6). This has been corrected. The authors would like to apologise for this error, which does not alter the conclusions of the paper.