High level of microsatellite instability but not hypermethylation of mismatch repair genes in therapy‐related and secondary acute myeloid leukaemia and myelodysplastic syndrome

Abstract excerpt

Microsatellite instability (MSI) is associated with defects in the DNA mismatch repair (MMR) system, such as mutation or epigenetic silencing of the genes by promoter hypermethylation. We investigated the presence of MSI and promoter hypermethylation of hMLH1 and hMSH2 genes in 82 patients (68 acute myeloid leukaemia, AML; 14 myelodysplastic syndromes, MDS). Twelve separate microsatellite loci, including three...

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