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Related Experiment Videos

Microsatellite instability in human solid tumors

I I Arzimanoglou1, F Gilbert, H R Barber

  • 1Department of Obstetrics and Gynecology, Lenox Hill Hospital, New York, New York 10021, USA.

Cancer
|May 20, 1998
PubMed
Summary
This summary is machine-generated.

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Microsatellite instability (MIN) is found in many cancers. MIN in HNPCC is linked to specific gene mutations, while MIN in other tumors has different patterns and genetic associations, suggesting diagnostic potential.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Microsatellite instability (MIN) is observed across diverse human tumors, both hereditary and sporadic.
  • Understanding MIN's correlation with other biological markers is crucial for assessing its significance in cancer.

Purpose of the Study:

  • To critically review and analyze published data on MIN in human solid tumors.
  • To correlate MIN with other biological parameters and assess its significance in cancer.

Main Methods:

  • Comprehensive literature review up to May 1997.
  • Critical assessment and comparative analysis of existing MIN data in human solid tumors.

Main Results:

  • MIN associated with inherited DNA mismatch repair gene mutations (hMSH2/hMLH1) is primarily seen in hereditary nonpolyposis colon carcinoma (HNPCC) and some young colorectal cancer patients.

Related Experiment Videos

  • MIN in non-HNPCC tumors generally lacks somatic mutations in common HNPCC-related mismatch repair genes.
  • Specific chromosome loci with high microsatellite marker instability may represent tumor-specific MIN hotspots.
  • Distinct MIN gel banding patterns in non-colon tumors differ from HNPCC.
  • While no overall association with histopathology exists, certain tumor subtypes show higher MIN frequencies.
  • MIN can occur at various tumor progression stages and in non-tumor tissues.

    • Conclusions:

    • Molecular diagnosis using MIN analysis is established for HNPCC and sporadic bladder carcinoma.
    • MIN analysis holds potential for the diagnosis and/or prognosis of other solid human tumors.