Heterogeneity is the single most important factor driving cancer progression and treatment failure, yet little is understood about how and when this heterogeneity arises. A new study shows that colorectal cancers acquire their dominant mutations early in development and that subsequent mutations, even if they confer greater fitness, are unlikely to sweep through the tumor.
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Robertson-Tessi, M., Anderson, A. Big Bang and context-driven collapse. Nat Genet 47, 196–197 (2015). https://doi.org/10.1038/ng.3231
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DOI: https://doi.org/10.1038/ng.3231
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