The PTEN, BAX, and IGFIIR genes are mutated in endometrial atypical hyperplasia

Jpn J Cancer Res. 1998 Oct;89(10):985-90. doi: 10.1111/j.1349-7006.1998.tb00485.x.


To pursue the pathogenesis of endometrial carcinogenesis, we investigated microsatellite instability, mutations in the PTEN, TGF beta RII, IGFIIR, and BAX genes, and LOHs on 10q in 18 putative endometrial premalignant lesions (11 endometrial atypical hyperplasias (ATHs), 2 complex hyperplasias, and 5 simple hyperplasias) as well as 8 endometrial cancers (ECs). In the ATH cases, MSIs as well as LOHs at 10q were observed at frequencies similar to those in ECs. Mutations in PTEN, BAX, and IGFIIR were observed only in ATHs and ECs. These results suggest that (1) PTEN, BAX, and IGFIIR are already mutated in ATHs, and (2) ATH is one of the precursor lesions which could lead to EC.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Endometrial Neoplasms / genetics*
  • Endometrial Neoplasms / pathology
  • Endometrium / metabolism
  • Endometrium / pathology*
  • Exons
  • Female
  • Genes, Tumor Suppressor
  • Humans
  • Hyperplasia
  • Loss of Heterozygosity
  • Microsatellite Repeats
  • Mutation*
  • PTEN Phosphohydrolase
  • Phosphoric Monoester Hydrolases / genetics*
  • Precancerous Conditions / genetics*
  • Precancerous Conditions / metabolism
  • Precancerous Conditions / pathology
  • Protein Serine-Threonine Kinases
  • Proto-Oncogene Proteins / genetics*
  • Proto-Oncogene Proteins c-bcl-2*
  • Proto-Oncogenes
  • Receptor, IGF Type 2 / genetics*
  • Receptor, Transforming Growth Factor-beta Type II
  • Receptors, Transforming Growth Factor beta / genetics
  • Sequence Deletion
  • Tumor Suppressor Proteins*
  • bcl-2-Associated X Protein


  • BAX protein, human
  • Proto-Oncogene Proteins
  • Proto-Oncogene Proteins c-bcl-2
  • Receptor, IGF Type 2
  • Receptors, Transforming Growth Factor beta
  • Tumor Suppressor Proteins
  • bcl-2-Associated X Protein
  • Protein Serine-Threonine Kinases
  • Receptor, Transforming Growth Factor-beta Type II
  • Phosphoric Monoester Hydrolases
  • PTEN Phosphohydrolase
  • PTEN protein, human