Cited by 2,063Cancer Genomics and DiagnosticsProtein Kinase Regulation and GTPase SignalingProtein Tyrosine Phosphatases

A Comprehensive Survey of Ras Mutations in Cancer

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Prior, Ian A., Lewis, Paul D., Mattos, Carla·2012·Cancer Research

Abstract

All mammalian cells express 3 closely related Ras proteins, termed H-Ras, K-Ras, and N-Ras, that promote oncogenesis when they are mutationally activated at codon 12, 13, or 61. Although there is a high degree of similarity among the isoforms, K-Ras mutations are far more frequently observed in cancer, and each isoform displays preferential coupling to particular cancer types. We examined the mutational spectra of Ras isoforms curated from large-scale tumor profiling and found that each isoform exhibits surprisingly distinctive codon mutation and amino-acid substitution biases. These findings were unexpected given that these mutations occur in regions that share 100% amino-acid sequence identity among the 3 isoforms. Of importance, many of these mutational biases were not due to differences in exposure to mutagens, because the patterns were still evident when compared within specific cancer types. We discuss potential genetic and epigenetic mechanisms, as well as isoform-specific differences in protein structure and signaling, that may promote these distinct mutation patterns and differential coupling to specific cancers. Cancer Res; 72(10); 2457–67. ©2012 AACR.

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  • Approximately 90% of PDAC cases harbor a KRAS mutation.

    “Approximately 90% of PDAC cases harbor a Kirsten rat sarcoma (KRAS) mutation (Prior et al., 2012).”

    From The antitumoral effect of statins in pancreatic ductal adenocarcinoma: a scoping review (2026) · cites this paper as Prior et al., 2012

    In “Ras mutation frequencies > Large-scale tumour profiling” (page unavailable), the paper says early, small-sample analyses reported KRAS mutations in 90% of pancreatic tumours. It then explicitly states that its larger-scale pancreas mutation rate is 60%, rather than the generally quoted 90%, contrary to the unqualified claim. (LLM, conf=0.87)

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  • KRAS G12C mutation is present in approximately 3% of colorectal cancer cases.

    “This specific mutation, present in ~3% of CRC cases, 2 is associated with significantly reduced progression-free survival (PFS) and overall survival (OS) compared to KRAS wildtype tumors.[3][4][5]”
  • KRAS mutations, especially KRASG12C and KRASG12V, are strongly associated with smoking.

    “Unlike other clinically actionable genomic alterations found in NSCLCs (such as EGFR and ALK aberrations), KRAS mutations, particularly KRASG12C and KRASG12V, are strongly associated with smoking29–31.”
  • RAS mutations and the deregulated signaling they cause account for one third of all human cancers.

    “However, RAS mutations and the resulting deregulated signaling events are responsible for one third of all human cancers4 (Figure 1).”
  • KRAS is mutated in many cancers, predominantly adenocarcinomas, while NRAS mutations are prominent in melanoma and myeloid cancer.

    “Overall, KRAS is mutated in many cancers (predominantly adenocarcinomas), whereas NRAS mutations are prominent in melanoma and myeloid cancer4,15,16 (Fig. 1).”

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Authors
Prior, I. A., Lewis, P. D., & Mattos, C.
Affiliations
Northeastern University (US)
Corresponding author
Prior, Ian A.
Venue
Cancer Research
Published
2012-05-14
Volume
72
Issue
10
Pages
2457-2467
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2135184154
Cited by
2,063
References
67
Citations by year
2026: 114 · 2025: 154 · 2024: 169 · 2023: 203 · 2022: 189 · 2021: 223 · 2020: 203 · 2019: 164 · 2018: 162 · 2017: 144 · 2016: 110 · 2015: 111 · 2014: 52 · 2013: 47 · 2012: 13
FWCI
23.60
Type
journal article
Language
en
Open access
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Wellcome Trust (067398)
  • Cancer Research UK (A6672)
  • Biotechnology and Biological Sciences Research Council (BB/G018162/1)
  • National Cancer Institute (R56CA096867)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
Keywords
RAS mutations, KRAS, H-Ras, NRAS, Ras isoforms, codon 12 mutation, mutational spectra, carcinogenesis, epigenetic mechanisms, Ras signaling
MeSH terms
Cell Transformation, Neoplastic, Codon, Humans, Models, Molecular, Molecular Conformation, Neoplasms, Genes, ras, Signal Transduction, Point Mutation, ras Proteins, Protein Isoforms, Catalytic Domain, Databases, Genetic, Epigenesis, Genetic

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