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Usefulness of Immunohistochemistry for Microsatellite Instability Screening in Gastric Cancer

Authors
 Yoon Sung Bae  ;  Hoguen Kim  ;  Sung Hoon Noh  ;  Hyunki Kim 
Citation
 GUT AND LIVER, Vol.9(5) : 629-635, 2015 
Journal Title
 GUT AND LIVER 
ISSN
 1976-2283 
Issue Date
2015
MeSH
Adult ; Aged ; Aged, 80 and over ; Female ; Humans ; Immunohistochemistry/statistics & numerical data* ; Kaplan-Meier Estimate ; Male ; Microsatellite Instability* ; Middle Aged ; Phenotype ; Polymerase Chain Reaction ; Predictive Value of Tests ; Prognosis ; Proportional Hazards Models ; Sensitivity and Specificity ; Sex Factors ; Stomach Neoplasms/genetics* ; Stomach Neoplasms/mortality
Keywords
Gastric cancer ; Immunohistochemistry ; Microsatellite instability ; hMLH1 ; hMSH2
Abstract
BACKGROUND/AIMS: The usefulness of immunohistochemistry to screen for the microsatellite instability (MSI) phenotype in gastric cancer remains unclear. Moreover, the prognostic value of MSI phenotypes in gastric cancer has been debated. METHODS: The clinicopathologic parameters and survival outcomes of 203 MSI-high (MSI-H) and 261 microsatellite-stable (MSS) advanced gastric cancers (AGCs) were compared. Next, we compared the immunohistochemistry results for hMLH1 and hMSH2 with those of a polymerase chain reaction (PCR)-based method. Kaplan-Meier curves and a Cox proportional hazard regression model were used to conduct survival analyses. RESULTS: The MSI-H AGCs were correlated with older age (p<0.001), female gender (p=0.018), distal location (p<0.001), larger size (p=0.016), and intestinal type (p<0.001). Multivariate analysis revealed that the MSI-H phenotype was an independent favorable factor that was related to overall survival in patients with AGC (p<0.001). Compared with the PCR-based analysis, immunohistochemistry exhibited high sensitivity (91.1%) and specificity (98.5%) in the detection of MSI phenotypes. CONCLUSIONS: MSI-H gastric cancers have distinct clinicopathologic features and better prognoses, which suggests the necessity of MSI analysis in gastric cancer. Immunohistochemistry can be a useful and reliable screening method in the assessment of MSI status in gastric cancer.
Files in This Item:
T201504103.pdf Download
DOI
10.5009/gnl15133
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Hyunki(김현기) ORCID logo https://orcid.org/0000-0003-2292-5584
Kim, Ho Keun(김호근)
Noh, Sung Hoon(노성훈) ORCID logo https://orcid.org/0000-0003-4386-6886
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/141652
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