We have examined a panel of gynecological sarcomas for microsatellite instability. The genomic DNA from 11 of 44 sarcomas contained somatic alterations in the lengths of one or more di-, tri-, tetra-, or pentanucleotide microsatellite sequence markers, and 6 of these cases had alterations in two or more markers. In addition, di-, tri-, and tetranucleotide microsatellites were found to be highly...

Abbreviations used in this paper: AFAP, attenuated familial adenomatous polyposis; AGA, American Gastroenterological Association; AUC, area under the curve; CI, confidence interval; CRC, colorectal cancer; FAP, familial adenomatous polyposis; HNPCC, hereditary nonpolyposis colorectal cancer; IHC, immunohistochemistry; MAP, MUTYH-associated polyposis; MMR, mismatch repair; MSI, microsatellite in...

The instability of microsatellite sequences dispersed in the genome has been linked to a deficiency in cellular mismatch repair. This phenotype has been frequently observed in various human neoplasms and is regarded as a major factor in tumorigenesis. To demonstrate alterations in microsatellite sequences, polymerase chain reaction (PCR) and electrophoretic analysis are techniques often used. H...

OBJECTIVE Mutator phenotypes with microsatellite instability (MSI) are observed in a subset of solid tumors including those localized in the brain. MSI arises from impaired DNA mismatch repair. It can be a potential marker of resistance to radiation and chemotherapy, as demonstrated for several cancer types. Our study aims are to investigate MSI incidence in pituitary adenomas (PA) with a curre...