Breast Cancer Research and Treatment

, Volume 47, Issue 3, pp 269–281

The mannose 6-phosphate/insulin-like growth factor 2 receptor (M6P/IGF2R), a putative breast tumor suppressor gene

  • Adam J. Oates
  • Lisa M. Schumaker
  • Sara B. Jenkins
  • Amelia A. Pearce
  • Stacey A. DaCosta
  • Banu Arun
  • Matthew J.C. Ellis


Loss of heterozygosity (LOH) at the mannose 6-phosphate/insulin-like growth factor 2 receptor gene locus (M6P/IGF2R) on 6q26-27 has recently been demonstrated in approximately 30% of both invasive and in situ breast cancers. LOH was coupled with somatic point mutations in the remaining allele in several instances, leading to the proposition that M6P/IGF2R is a tumor suppressor gene [1]. Somatic mutations in M6P/IGF2R have also been described in hepatoma [2] and gastrointestinal cancers with the replication error positive (RER+) phenotype [3]. These data indicate that M6P/IGF2R loss of function mutations may be involved in the pathogenesis of a wide spectrum of malignancies. Extensive data on the normal function of the M6P/IGF2R suggest that loss of M6P/IGF2R activity may contribute to multiple aspects of tumor pathophysiology, including deregulated growth, apoptosis, angiogenesis and invasion.

loss of heterozygosity mannose 6-phosphate/insulin-like growth factor 2 receptor microsatellite instability tumor suppressor gene 


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Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • Adam J. Oates
    • 1
  • Lisa M. Schumaker
    • 1
  • Sara B. Jenkins
    • 1
  • Amelia A. Pearce
    • 1
  • Stacey A. DaCosta
    • 1
  • Banu Arun
    • 1
  • Matthew J.C. Ellis
    • 1
  1. 1.Lombardi Cancer CenterGeorgetown UniversityWashington DCUSA

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