Abstract
Introduction
Conflicting data exist regarding the relevance of high-frequency microsatellite instability (MSI-H) for predicting the prognosis and benefits of 5-fluorouracil (5-FU)-based chemotherapy. This study investigated the usefulness of MSI as either a prognostic indicator or predictor of distinct clinical attributes regarding the use of adjuvant chemotherapy with 5-FU and its analogues in gastric cancer.
Materials and methods
Data and tumor specimens were collected from 240 gastric cancer patients from 1993 to 2002. Five microsatellite loci were analyzed using a high-intensity microsatellite analysis reported previously. A Cox proportional hazard model was used to compare the clinical data and survival as well as any associations between MSI and 5-FU treatment status of patients with MSI or microsatellite stability (MSS) gastric cancers. A 3-(4,5-dimethyl-2-thiazolyl) -2,5-diphenyl-2H-tetrazolium bromide (MTT) assay was conducted in 168 cases to investigate chemosensitivity to 5-FU.
Results
This analysis identified 22 MSI-H (9.4%), 25 MSI-L (10.7%), and 193 MSS (79.9%) tumors. Gastric cancer with MSI-H tended to have increased likelihood to show higher age, antral location of the tumor, and lymph vessel involvement (P < 0.05). Univariate analyses failed to show any difference between the MSI-H and MSS/MSI-L groups with respect to overall survival. Furthermore, survival after the administration of 5-FU did not correlate with MSI status, and MSI was not associated with 5-FU sensitivity by MTT assay.
Conclusion
The results of this study indicate that MSI status has no clear influence on overall survival or response to 5-FU in gastric cancer.
Similar content being viewed by others
References
Falchetti M, Saieva C, Lupi R, et al. Gastric cancer with high-level microsatellite instability: target gene mutations, clinicopathologic features, and long-term survival. Hum Pathol. 2008;39:925–32.
Tahara E. Genetic pathways of two types of gastric cancer. IARC Sci Publ. 2004;327–49.
Kim JJ, Baek MJ, Kim L, et al. Accumulated frameshift mutations at coding nucleotide repeats during the progression of gastric carcinoma with microsatellite instability. Lab Invest. 1999;79:1113–20.
Guo RJ, Wang Y, Kaneko E, et al. Analyses of mutation and loss of heterozygosity of coding sequences of the entire transforming growth factor beta type II receptor gene in sporadic human gastric cancer. Carcinogenesis. 1998;19:1539–44.
Lee HS, Choi SI, Lee HK, et al. Distinct clinical features and outcomes of gastric cancers with microsatellite instability. Mod Pathol. 2002;15:632–40.
Wu CW, Chen GD, Jiang KC, et al. A genome-wide study of microsatellite instability in advanced gastric carcinoma. Cancer. 2001;92:92–101.
Wu MS, Lee CW, Shun CT, et al. Distinct clinicopathologic and genetic profiles in sporadic gastric cancer with different mutator phenotypes. Genes Chromosomes Cancer. 2000;27:403–11.
Pinto M, Oliveira C, Machado JC, et al. MSI-L gastric carcinomas share the hMLH1 methylation status of MSI-H carcinomas but not their clinicopathological profile. Lab Invest. 2000;80:1915–23.
Kang GH, Shim YH, Ro JY. Correlation of methylation of the hMLH1 promoter with lack of expression of hMLH1 in sporadic gastric carcinomas with replication error. Lab Invest. 1999;79:903–9.
Thibodeau SN, French AJ, Cunningham JM, et al. Microsatellite instability in colorectal cancer: different mutator phenotypes and the principal involvement of hMLH1. Cancer Res. 1998;58:1713–8.
Cunningham JM, Christensen ER, Tester DJ, et al. Hypermethylation of the hMLH1 promoter in colon cancer with microsatellite instability. Cancer Res. 1998;58:3455–60.
Oki E, Oda S, Maehara Y, Sugimachi K. Mutated gene-specific phenotypes of dinucleotide repeat instability in human colorectal carcinoma cell lines deficient in DNA mismatch repair. Oncogene. 1999;18:2143–7.
Bevilacqua RA, Simpson AJ. Methylation of the hMLH1 promoter but no hMLH1 mutations in sporadic gastric carcinomas with high-level microsatellite instability. Int J Cancer. 2000;87:200–3.
Leung SY, Yuen ST, Chung LP, Chu KM, Chan AS, Ho JC. hMLH1 promoter methylation and lack of hMLH1 expression in sporadic gastric carcinomas with high-frequency microsatellite instability. Cancer Res. 1999;59:159–64.
Fleisher AS, Esteller M, Wang S, et al. Hypermethylation of the hMLH1 gene promoter in human gastric cancers with microsatellite instability. Cancer Res. 1999;59:1090–5.
Nan HM, Song YJ, Yun HY, Park JS, Kim H. Effects of dietary intake and genetic factors on hypermethylation of the hMLH1 gene promoter in gastric cancer. World J Gastroenterol. 2005;11:3834–41.
Sakata K, Tamura G, Endoh Y, Ohmura K, Ogata S, Motoyama T. Hypermethylation of the hMLH1 gene promoter in solitary and multiple gastric cancers with microsatellite instability. Br J Cancer. 2002;86:564–7.
Bacani J, Zwingerman R, Di Nicola N, et al. Tumor microsatellite instability in early onset gastric cancer. J Mol Diagn. 2005;7:465–77.
Schneider BG, Bravo JC, Roa JC, et al. Microsatellite instability, prognosis and metastasis in gastric cancers from a low-risk population. Int J Cancer. 2000;89:444–52.
An C, Choi IS, Yao JC, et al. Prognostic significance of CpG island methylator phenotype and microsatellite instability in gastric carcinoma. Clin Cancer Res. 2005;11:656–63.
Beghelli S, de Manzoni G, Barbi S, et al. Microsatellite instability in gastric cancer is associated with better prognosis in only stage II cancers. Surgery. 2006;139:347–56.
Perez RO, Jacob CE, D’Ottaviano FL, et al. Microsatellite instability in solitary and sporadic gastric cancer. Rev Hosp Clin Fac Med Sao Paulo. 2004;59:279–85.
Sakuramoto S, Sasako M, Yamaguchi T, et al. Adjuvant chemotherapy for gastric cancer with S-1, an oral fluoropyrimidine. N Engl J Med. 2007;357:1810–20.
Carethers JM, Smith EJ, Behling CA, et al. Use of 5-fluorouracil and survival in patients with microsatellite-unstable colorectal cancer. Gastroenterology. 2004;126:394–401.
Ribic CM, Sargent DJ, Moore MJ, et al. Tumor microsatellite-instability status as a predictor of benefit from fluorouracil-based adjuvant chemotherapy for colon cancer. N Engl J Med. 2003;349:247–57.
Liang JT, Huang KC, Lai HS, et al. High-frequency microsatellite instability predicts better chemosensitivity to high-dose 5-fluorouracil plus leucovorin chemotherapy for stage IV sporadic colorectal cancer after palliative bowel resection. Int J Cancer. 2002;101:519–25.
Watanabe T, Wu TT, Catalano PJ, et al. Molecular predictors of survival after adjuvant chemotherapy for colon cancer. N Engl J Med. 2001;344:1196–206.
Oda S, Zhao Y, Maehara Y. Microsatellite instability in gastrointestinal tract cancers: a brief update. Surg Today. 2005;35:1005–15.
Oki E, Baba H, Tokunaga E, et al. Akt phosphorylation associates with LOH of PTEN and leads to chemoresistance for gastric cancer. Int J Cancer. 2005;117:376–80.
Takeuchi H, Baba H, Inutsuka S, et al. Antitumor chemosensitivity differs between clinical sarcoma and adenocarcinoma tissues. Anticancer Res. 1994;14:169–71.
Oda S, Maehara Y, Ikeda Y, et al. Two modes of microsatellite instability in human cancer: differential connection of defective DNA mismatch repair to dinucleotide repeat instability. Nucleic Acids Res. 2005;33:1628–36.
Oda S, Oki E, Maehara Y, Sugimachi K. Precise assessment of microsatellite instability using high resolution fluorescent microsatellite analysis. Nucleic Acids Res. 1997;25:3415–20.
Sakurai M, Zhao Y, Oki E, Kakeji Y, Oda S, Maehara Y. High-resolution fluorescent analysis of microsatellite instability in gastric cancer. Eur J Gastroenterol Hepatol. 2007;19:701–9.
Tokunaga E, Oki E, Oda S, et al. Frequency of microsatellite instability inBreast cancer determined by high-resolution fluorescent microsatellite analysis. Oncology. 2000;59:44–9.
Benatti P, Gafa R, Barana D, et al. Microsatellite instability and colorectal cancer prognosis. Clin Cancer Res. 2005;11:8332–40.
Mizoguchi M, Inamura T, Ikezaki K, et al. Patient survival and microsatellite instability in gliomas by high-resolution fluorescent analysis. Oncol Rep. 1999;6:791–5.
Kobayashi K, Okamoto T, Takayama S, Akiyama M, Ohno T, Yamada H. Genetic instability in intestinal metaplasia is a frequent event leading to well-differentiated early adenocarcinoma of the stomach. Eur J Cancer. 2000;36:1113–9.
Wu MS, Lee CW, Shun CT, et al. Clinicopathological significance of altered loci of replication error and microsatellite instability-associated mutations in gastric cancer. Cancer Res. 1998;58:1494–7.
Miyamoto N, Yamamoto H, Taniguchi H, et al. Differential expression of angiogenesis-related genes in human gastric cancers with and those without high-frequency microsatellite instability. Cancer Lett. 2007;254:42–53.
Hofler H, Langer R, Ott K, Keller G. Prediction of response to neoadjuvant chemotherapy in carcinomas of the upper gastrointestinal tract. Adv Exp Med Biol. 2006;587:115–20.
Kinoshita T, Nashimoto A, Yamamura Y, et al. Feasibility study of adjuvant chemotherapy with S-1 (TS-1;tegafur, gimeracil, oteracil potassium) for gastric cancer. Gastric Cancer. 2004;7:104–9.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Oki, E., Kakeji, Y., Zhao, Y. et al. Chemosensitivity and Survival in Gastric Cancer Patients with Microsatellite Instability. Ann Surg Oncol 16, 2510–2515 (2009). https://doi.org/10.1245/s10434-009-0580-8
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1245/s10434-009-0580-8