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Analysis of microsatellite instability in Korean patients with pancreatic cancer

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Author(s)
Mohammad R. ALAMYong H. KIMAlaa ALHAZMIShafiul HAQUEYoo N. KANGHye R. JUNGMi-Yeung SOHNDae-Kwang KIM
Keimyung Author(s)
Kim, Yong HoonJung, Hye RaKim, Dae Kwang
Department
Dept. of Surgery (외과학)
Dept. of Pathology (병리학)
Dept. of Medical Genetics (의학유전학)
Journal Title
Minerva Med
Issued Date
2022
Volume
113
Issue
6
Keyword
Promega panelPancreatic cancerMicrosatellite instabilityPrognosisImmunotherapy
Abstract
BACKGROUND:
Pancreatic cancer (PC) is a dangerous malignancy with a high mortality rate. Diagnosing PC at an early stage is difficult, and approximately 5 % of the patients survive for 5 years. Microsatellite instability (MSI) plays an important role in colorectal cancer (CRC) for prognosis and immunotherapy. Evaluation of MSI status is important as it is recognized biomarker for the positive response of immune checkpoint blockade therapy in cancer. To our knowledge, there is no report yet on the prevalence of MSI in Korean PC patients. Studies have reported conflicting prevalence of MSI in PC.

METHODS:
Therefore, to improve the likelihood of MSI identification in PC, we included 133 patients with PC; paired tumor and normal tissue DNA were isolated and MSI was analyzed using Promega panel and immunohistochemistry (IHC) was also performed.

RESULTS:
Our results from the Promega panel indicated that one (0.7 %) tumor was MSI-high (MSI-H), 13 (9.8 %) were MSI-low (MSI-L), and 119 (89.5 %) were microsatellite stable (MSS). IHC result also confirmed dMMR in only one sample.

CONCLUSIONS:
The finding of low incidence of MSI-H observed by the Promega panel also matched IHC results, so this study suggested that in Korean PC patients, MSI prevalence is infrequent.
Keimyung Author(s)(Kor)
김용훈
정혜라
김대광
Publisher
School of Medicine (의과대학)
Type
Article
ISSN
1827-1669
Source
https://www.minervamedica.it/en/journals/minerva-medica/article.php?cod=R10Y9999N00A21121601
DOI
10.23736/S0026-4806.21.07669-2
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/44685
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Medical Genetics (의학유전학)
1. School of Medicine (의과대학) > Dept. of Pathology (병리학)
1. School of Medicine (의과대학) > Dept. of Surgery (외과학)
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