KRAS alleles: the LCS6 3'UTR variant and KRAS coding sequence mutations in the NCI-60 panel

Cell Cycle. 2012 Jan 15;11(2):361-6. doi: 10.4161/cc.11.2.18794. Epub 2012 Jan 15.


The KRAS-variant is a germline single nucleotide polymorphism (SNP) within the 3'UTR of the KRAS gene predicted to disrupt a complementary binding site (LCS6) for the let-7 microRNA (miRNA). The KRAS-variant is associated with increased risk of various cancers, including lung cancer, ovarian cancer and triple-negative breast cancer, and is associated with altered tumor biology in head and neck cancer, colon cancer and melanoma. To better understand the molecular pathways that may be regulated or affected by the presence of the KRAS-variant allele in cancer cells, we examined its prevalence in the NCI-60 panel of cell lines and sought to identify common features of the cell lines that carry the variant allele. This study provides a step forward towards understanding the molecular and pathological significance of the KRAS-variant.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 3' Untranslated Regions*
  • Alleles*
  • Binding Sites / genetics
  • Cell Line, Tumor
  • Epigenesis, Genetic
  • Gene Expression
  • Gene Expression Regulation, Neoplastic
  • Humans
  • MicroRNAs / metabolism*
  • Mutation
  • Open Reading Frames*
  • Polymorphism, Single Nucleotide
  • Proto-Oncogene Proteins / genetics*
  • Proto-Oncogene Proteins p21(ras)
  • ras Proteins / genetics*


  • 3' Untranslated Regions
  • KRAS protein, human
  • MicroRNAs
  • Proto-Oncogene Proteins
  • mirnlet7 microRNA, human
  • Proto-Oncogene Proteins p21(ras)
  • ras Proteins