Correction to: Nature Reviews Molecular Cell Biology https://doi.org/10.1038/s41580-020-0237-9, published online 16 April 2020.

In the supplementary information, the reference to Contreras et al. 2016 was removed (as it relates to a gene different from E2-2/TCF4), and ‘(TCF7L2)’ was deleted from the table. Misspellings in the author name Ruby Y. J. Huang and in the PyMT glossary definition were also corrected. These changes have been made to the HTML and PDF versions of the article.