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Abstract: CONCLUSION: MSI was infrequent in ovarian tumors, including both borderline and malignant tumors. MSI was found to be uncommon in sporadic ovarian tumors, even by using additional MSI markers. The clinical significance of MSI is not strong in patients with sporadic ovarian tumors.
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DISCUSSION
....MSI is caused by mutations in the mismatchrepair genes (MMR). MSI has been implicated in the pathogenesis of colon, endometrial, and gastric
carcinomas that occur in the setting of HNPCC (Lynch Syndrome), and also in a subset of sporadic cancers such as upper urinary tract, stomach, colon, andendometrial carcinomas.
In ovarian cancers, the reported incidence of MSI ranges from 0 to 37%, depending on the number and type of markers. Sood et al. first
reported the incidence of MSI in ovarian cancer using the NCI criteria.....Therefore, further study of molecular events that are correlated with ovarian tumors is needed."
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