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Publication Detail
The evolutionary landscape of colorectal tumorigenesis
  • Publication Type:
    Journal article
  • Publication Sub Type:
  • Authors:
    Cross W, Kovac M, Mustonen V, Temko D, Davis H, Baker AM, Biswas S, Arnold R, Chegwidden L, Gatenbee C, Anderson AR, Koelzer VH, Martinez P, Jiang X, Domingo E, Woodcock DJ, Feng Y, Kovacova M, Maughan T, Adams R, Bach S, Beggs A, Brown L, Buffa F, Cazier JB, Domingo E, Blake A, Wu CH, Chatzpili E, Richman S, Dunne P, Harkin P, Higgins G, Hill J, Holmes C, Horgan D, Kaplan R, Kennedy R, Lawler M, Leedham S, Maughan T, McDermott U, McKenna G, Middleton G, Morton D, Murray G, Quirke P, Salto-Tellez M, Samuel L, Schuh A, Sebag-Montefiore D, Seymour M, Sharma R, Sullivan R, Tomlinson I, West N, Wilson R, Jansen M, Rodriguez-Justo M, Ashraf S, Guy R, Cunningham C, East JE, Wedge DC, Wang LM, Palles C, Heinimann K, Sottoriva A, Leedham SJ, Graham TA, Tomlinson IPM
  • Publication date:
  • Journal:
    Nature Ecology and Evolution
  • Status:
© 2018, The Author(s). The evolutionary events that cause colorectal adenomas (benign) to progress to carcinomas (malignant) remain largely undetermined. Using multi-region genome and exome sequencing of 24 benign and malignant colorectal tumours, we investigate the evolutionary fitness landscape occupied by these neoplasms. Unlike carcinomas, advanced adenomas frequently harbour sub-clonal driver mutations—considered to be functionally important in the carcinogenic process—that have not swept to fixation, and have relatively high genetic heterogeneity. Carcinomas are distinguished from adenomas by widespread aneusomies that are usually clonal and often accrue in a ‘punctuated’ fashion. We conclude that adenomas evolve across an undulating fitness landscape, whereas carcinomas occupy a sharper fitness peak, probably owing to stabilizing selection.
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