Cited by 1,770Cancer Genomics and DiagnosticsNonmelanoma Skin Cancer StudiesChromatin Remodeling and Cancer

High burden and pervasive positive selection of somatic mutations in normal human skin

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Martincorena, Iñigo, Roshan, Amit, Gerstung, Moritz, Ellis, Peter, Van Loo, Peter, McLaren, Stuart, Wedge, David C., Fullam, Anthony +8 more·2015·Science

Abstract

Normal skin's curiously abnormal genome: Within every tumor, a battle is being waged. As individual tumor cells acquire new mutations that promote their survival and growth, they clonally expand at the expense of tumor cells that are “less fit.” Martincorena et al. sequenced 234 biopsies of sun-exposed but physiologically normal skin from four individuals (see the Perspective by Brash). They found a surprisingly high burden of mutations, higher than that of many tumors. Many of the mutations known to drive the growth of cutaneous squamous cell carcinomas were already under strong positive selection. More than a quarter of normal skin cells carried a driver mutation, and every square centimeter of skin contained hundreds of competing mutant clones. Science , this issue p. 880 ; see also p. 867

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  • The shallow increase in UV-specific mutations in normal cells is consistent with efficient repair minimizing UV-induced mutations and skin cancer initiation in repair-proficient cells.

    “Additionally, normal cells showed a smaller, shallow increase in UV-specific mutations with UVC dose, as is consistent with efficient repair that minimizes UV-induced mutations and skin cancer initiation in repair-proficient cells (10).”

    From Why Cockayne syndrome patients do not get cancer despite their DNA repair deficiency (2016) · cites this paper as [10]

    The “Mutational signature of ultraviolet light exposure in normal skin” section (page unavailable) reports UV-associated mutations and a strand bias consistent with transcription-coupled repair. It does not examine UVC dose responses or show that efficient repair minimizes UV-induced mutations or skin cancer initiation in repair-proficient cells. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Cancer, especially in skin, is associated with mutagenesis.

    “Because cancer, especially in skin, is associated with mutagenesis (9, 10), we hypothesized that, unlike defects in GGR, which are associated with enhanced UV-induced mutagenesis in XP-C cells (11), the”
  • Previous studies point to pol η being an important mutagenic factor in normal skin and cancer cells.

    “Thus, all these studies point to pol h being an important mutagenic factor in normal skin and cancer cells.”
  • Activating oncogenic mutations alone do not allow the immune system to eliminate the affected cell, since such mutations occur frequently in normal tissues.

    “Mutational activation of a single or multiple oncogenes is, however, insufficient for immune eradication of an oncogene-activated cell, reflected by the existence of oncogenic mutations at a high rate within normal tissues160.”

    From TGFβ biology in cancer progression and immunotherapy (2021) · cites this paper as [160]

  • Clonal expansion has also been found in other human tissues, including skin, colon and oesophagus, and is thought to be a normal, possibly ubiquitous, process associated with ageing in all tissues, in particular those that experience significant cellular turnover.

    “Clonal expansion has also been found in other human tissues, including skin, colon and oesophagus52–54, and is thought to be a normal, possibly ubiquitous, process that is associated with ageing in all tissues, in particular those that experience significant cellular turnover.”

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Authors
Martincorena, I., Roshan, A., Gerstung, M., Ellis, P., Van Loo, P., McLaren, S., Wedge, D. C., Fullam, A., Alexandrov, L. B., Tubio, J. M., Stebbings, L., Menzies, A., Widaa, S., Stratton, M. R., Jones, P. H., & Campbell, P. J.
Affiliations
  • Wellcome Sanger Institute (GB)
  • University of Cambridge (GB)
  • Wellcome Trust Sanger Institute, Hinxton CB10 1SA, Cambridgeshire, UK.
Corresponding author
  • Jones, Philip H.
  • Campbell, Peter J.
Venue
Science
Published
2015-05-22
Volume
348
Issue
6237
Pages
880-886
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1956871134
Cited by
1,770
References
52
Citations by year
2026: 105 · 2025: 141 · 2024: 152 · 2023: 159 · 2022: 184 · 2021: 199 · 2020: 200 · 2019: 180 · 2018: 139 · 2017: 149 · 2016: 122 · 2015: 34 · 2014: 3
FWCI
48.41
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Figshare (submittedVersion, cc-by)
  • Lirias (submittedVersion)
  • Research Explorer (The University of Manchester) (submittedVersion)
Funders
  • EMBO (1287-2012)
  • Wellcome Trust (077012/Z/05/Z)
  • Medical Research Council
  • MRC
  • Cancer Research UK (C609/A17257)
  • Wellcome Trust Senior Clinical Research Fellowship (WT088340MA)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
  • Health Sciences › Medicine › Epidemiology › Nonmelanoma Skin Cancer Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
Keywords
somatic mutations, normal skin, positive selection, cancer driver genes, UV exposure, cutaneous squamous cell carcinoma, clonal expansion, mutational burden, skin aging
MeSH terms
Carcinoma, Squamous Cell, Epidermis, Eyelids, Humans, Mutation, Neoplasms, Radiation-Induced, Selection, Genetic, Skin Neoplasms, Ultraviolet Rays, Tumor Burden, Genes, Neoplasm, Clonal Evolution

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