NatureEditorial Expression of Concern: Creation of human tumour cells with defined genetic elementsWilliam C. HahnChristopher M. CounterAnte S. LundbergRoderick L. BeijersbergenMary W. BrooksRobert A. Weinberg2026-04-15Full textDOI https://doi.org/10.1038/s41586-026-10504-9