Clinical significance of microsatellite instability in colorectal cancer.

Abstract excerpt

INTRODUCTION: Colorectal cancer is a heterogeneous tumor type with regard to molecular pathogenesis and genetic instability. The majority of colorectal cancers display chromosomal instability and follow the classical adenoma-carcinoma sequence of tumor progression. A subset of about 15 % of colorectal cancers, however, displays DNA mismatch repair (MMR) deficiency and the high-level microsatellite instability...

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