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Velho, Sérgia; Fernandes, Maria Sofia; Leite, Marina; Figueiredo, Ceu; Seruca, Raquel
World journal of gastroenterology : WJG, 11/2014, Letnik: 20, Številka: 44Journal Article
Loss of DNA mismatch repair(MMR) function, due to somatic or germline epi/genetic alterations of MMR genes leads to the accumulation of numerous mutations across the genome, creating a molecular phenotype known as microsatellite instability(MSI). In gastric cancer(g C), MSI occurs in about 15% to 30% of the cases. This review summarizes the current knowledge on the molecular mechanisms underlying the acquisition of MSI in g C as well as on the clinic, pathologic and molecular consequences of the MSI phenotype. Additionally, current therapeutic strategies for g C and their applicability in the MSI subset are also discussed.
