- Editorial Expression of Concern
- Published: 15 April 2026
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Addendum to: Nature https://doi.org/10.1038/22780 Published online 29 July 1999
The Editors would like to alert the readers that concerns were raised regarding a potential duplication of two bands in Fig. 1b. Due to the age of the article, the raw data were not available. In addition, splicing of the gel in Fig. 1b was noted; however, this was acceptable at the time. While the main conclusions of the article remain supported by the rest of the data in the article, readers are advised to interpret the data listed above with caution.
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Author notes
These authors contributed equally: William C. Hahn, Christopher M. Counter
Authors and Affiliations
Whitehead Institute for Biomedical Research, 9 Cambridge Center, and Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
William C. Hahn, Ante S. Lundberg, Roderick L. Beijersbergen, Mary W. Brooks & Robert A. Weinberg
Department of Adult Oncology, Dana-Farber Cancer Institute, Departments of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
William C. Hahn & Ante S. Lundberg
Department of Pharmacology and Cancer Biology, Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina, USA
Christopher M. Counter
Authors
- William C. Hahn
- Christopher M. Counter
- Ante S. Lundberg
- Roderick L. Beijersbergen
- Mary W. Brooks
- Robert A. Weinberg
Corresponding author
Correspondence to Robert A. Weinberg.
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Hahn, W.C., Counter, C.M., Lundberg, A.S. et al. Editorial Expression of Concern: Creation of human tumour cells with defined genetic elements. Nature (2026). https://doi.org/10.1038/s41586-026-10504-9
Published: 15 April 2026
Version of record: 15 April 2026
DOI: https://doi.org/10.1038/s41586-026-10504-9