Cited by 346Pancreatic and Hepatic Oncology ResearchPancreatitis Pathology and TreatmentCancer Genomics and Diagnostics

Frequency of K-ras Mutations in Pancreatic Intraductal Neoplasias Associated with Pancreatic Ductal Adenocarcinoma and Chronic Pancreatitis: A Meta-Analysis

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Löhr, Matthias, Klöppel, Gunter, Maisonneuve, Patrick, Lowenfels, Albert B., Lüttges, Jutta·2005·Neoplasia

Abstract

Molecular analyses have demonstrated mutations in the K-ras gene at codon 12 in the majority of pancreatic ductal adenocarcinomas (PDACs). In order to determine whether the K-ras mutation rate increases parallel to the grade of dysplasia in duct lesions, we performed a meta-analysis of the studies published between 1988 and 2003 that provide information on K-ras mutations in hyperplastic and dysplastic duct lesions in the pancreas. The described duct lesions were reclassified according to the nomenclature for pancreatic intraepithelial neoplasia (PanIN), and the molecular methods for detecting K-ras were reviewed. In PanIN lesions from pancreata of patients with PDAC, there was a stepwise increase in K-ras mutations that correlated with the grade of dysplasia of the PanIN lesion. K-ras mutations were found in 36%, 44%, and 87% of PanIN-1a, 1b, and 2-3 lesions, respectively (trend statistic P <.001). Mutation-enriched polymerase chain reaction (PCR) resulted in higher rates of K-ras mutations in PanIN than plain PCR did. The incidence of K-ras mutations in PanIN lesions associated with chronic pancreatitis (CP) or normal pancreas was low (around 10%). In CP, K-ras mutations were only found after a disease duration of 3 years. The correlation of the incidence of K-ras mutations with the grade of dysplasia in PanIN and the occurrence of these mutations in CP with a duration of more than 3 years underlines the importance of this genetic change for the development of PDAC.

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  • KRAS mutations were found in 10% of CP lesions and 44% of PDAC lesions, with increase in frequency with progression of PanIN grade.

    “KRAS mutations were found in 10% of CP lesions and 44% of PDAC lesions, with an increase in frequency with the progression of PanIN grade [102].”

    From Significance of TP53, CDKN2A, SMAD4 and KRAS in Pancreatic Cancer (2024) · cites this paper as [102]

    The Results report K-ras mutations in 10% of PanIN lesions associated with chronic pancreatitis (CP) and 44% of those associated with pancreatic ductal adenocarcinoma (PDAC). Mutation frequency increased with PanIN grade in the PDAC group, but the Results explicitly say it was independent of grade in the CP group. The claim omits that limitation. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • KRAS mutations are often early events in tumourigenesis in lung and pancreatic cancers.

    “KRAS mutations are often early events in tumourigenesis in lung and pancreatic cancers [41, 42].”

    From Drugging KRAS: Current perspectives and state-of-art review (2022) · cites this paper as [42]

  • KRAS mutation is detectable in 25% of PanIN-1A and 38% of PanIN-1B lesions.

    “KRAS mutation is readily detectable in 25% and 38% of PanIN-1A and PanIN-1B, respectively (55).”

    From KRAS mutation in pancreatic cancer (2021) · cites this paper as [55]

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3 of the 66 references couldn’t be matched to a known paper.

Research works printed but not linked: 4

  1. Lu ¨ttges J, Diederichs A, Menke MA, Vogel I, Kremer B, and Klo ¨ppel G (2000). Ductal lesions in patients with chronic pancreatitis show k-ras mutations in a frequency similar to that in the normal pancreas and lack nuclear immunoreactivity of p53. Cancer 88 (11), 2495 -2504.
  2. Oxman AD (1994). Checklists for review articles. BMJ 309 (6955), 648 -651 (September 10).
  3. Real FX (2003). A catastrophic hypothesis for pancreas cancer pro- gression. Gastroenterology 124 (7), 1958 -1964.
  4. Casini A, Galli A, Pignalosa P, Frulloni L, Grappone C, Milani S, Pederzoli P, Cavallini G, and Surrenti C (2000). Collagen type I syn- thesized by pancreatic periacinar stellate cells (PSC) co-localizes with lipid peroxidation-derived aldehydes in chronic alcoholic pancreatitis. J Pathol 192 (1), 81 -89.

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Authors
Löhr, M., Klöppel, G., Maisonneuve, P., Lowenfels, A. B., & Lüttges, J.
Affiliations
  • Heidelberg University (DE)
  • European Institute of Oncology (IT)
  • New York Medical College (US)
Corresponding author
Löhr, Matthias
Venue
Neoplasia
Publisher
Elsevier BV
Published
2005-01
Volume
7
Issue
1
Pages
17-23
ISSN
1476-5586 (ISSN-L)
OpenAlex
W2108100098
Cited by
343
References
66
Citations by year
2026: 6 · 2025: 7 · 2024: 15 · 2023: 15 · 2022: 16 · 2021: 16 · 2020: 17 · 2019: 13 · 2018: 24 · 2017: 22 · 2016: 15 · 2015: 18 · 2014: 26 · 2013: 21 · 2012: 16
FWCI
1.51
Type
journal article
Language
en
Open access
Locations
  • Neoplasia (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Deutsche Forschungsgemeinschaft
  • Deutsche Krebshilfe
Topics
  • Health Sciences › Medicine › Oncology › Pancreatic and Hepatic Oncology Research
  • Health Sciences › Medicine › Surgery › Pancreatitis Pathology and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
Keywords
KRAS mutation, pancreatic ductal adenocarcinoma, pancreatic intraepithelial neoplasia, chronic pancreatitis, pancreatic dysplasia, disease duration
MeSH terms
Adenocarcinoma, Humans, Mutation, Pancreatic Ducts, Pancreatic Neoplasms, Pancreatitis, Genes, ras, Carcinoma, Pancreatic Ductal

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