Cited by 2,456Genetic factors in colorectal cancerColorectal Cancer Treatments and StudiesColorectal Cancer Surgical Treatments

Microsatellite Instability in Colorectal Cancer

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Boland, C. Richard, Goel, Ajay·2010·Gastroenterology

Abstract

Microsatellite instability (MSI) is a hypermutable phenotype caused by the loss of DNA mismatch repair activity. MSI is detected in about 15% of all colorectal cancers; 3% are of these are associated with Lynch syndrome and the other 12% are caused by sporadic, acquired hypermethylation of the promoter of the MLH1 gene, which occurs in tumors with the CpG island methylator phenotype. Colorectal tumors with MSI have distinctive features, including a tendency to arise in the proximal colon, lymphocytic infiltrate, and a poorly differentiated, mucinous or signet ring appearance. They have a slightly better prognosis than colorectal tumors without MSI and do not have the same response to chemotherapeutics. Discovery of MSI in colorectal tumors has increased awareness of the diversity of colorectal cancers and implications for specialized management of patients.

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Authors
Boland, C. R., & Goel, A.
Affiliations
Baylor University Medical Center (US)
Corresponding author
Boland, C. Richard
Venue
Gastroenterology
Publisher
Elsevier BV
Published
2010-05
Volume
138
Issue
6
Pages
2073-2087.e3
ISSN
0016-5085 (ISSN-L)
OpenAlex
W2094390470
Cited by
2,456
References
228
Citations by year
2026: 140 · 2025: 201 · 2024: 202 · 2023: 191 · 2022: 257 · 2021: 211 · 2020: 194 · 2019: 160 · 2018: 140 · 2017: 115 · 2016: 112 · 2015: 117 · 2014: 111 · 2013: 100 · 2012: 94
FWCI
11.76
Type
journal article
Language
en
Open access
Locations
  • Gastroenterology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (R01 CA129286, R01 CA72851)
  • National Cancer Institute
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Genetic factors in colorectal cancer
  • Health Sciences › Medicine › Oncology › Colorectal Cancer Treatments and Studies
  • Health Sciences › Medicine › Oncology › Colorectal Cancer Surgical Treatments
Keywords
microsatellite instability, colorectal cancer, DNA mismatch repair, Lynch syndrome, MLH1 promoter methylation, CpG island methylator phenotype, proximal colon tumors, lymphocyte infiltration, mucinous tumors, signet ring cell carcinoma, prognosis, chemotherapy response
MeSH terms
Animals, Cell Transformation, Neoplastic, Colorectal Neoplasms, Hereditary Nonpolyposis, Humans, Mutation, Phenotype, Risk Factors, Colorectal Neoplasms, Gene Expression Regulation, Neoplastic, Treatment Outcome, Genetic Predisposition to Disease, Microsatellite Instability, DNA Mismatch Repair

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