Abstract
BackgroundRecently, some evidence emphasized the value of MSH2 and MSH6 inactivation and their hypermutation in predicting different cancers. The present consideration is to evaluate the value of MSH2 and MSH6 protein deficient studied by the immunohistochemistry (IHC) method and the tumor behaviors and aggressiveness in prostatic carcinoma. MethodsThis cross-sectional study was performed on 80 examples extricated from patients who endured prostate cancer and were planned for radical prostatectomy surgery. The expression levels of the genes were studied by IHC staining. ResultsThe deficiency in MSH2 and MSH6 expression was revealed in 10.0 % and 11.3 % of patients respectively, while the reduction of simultaneous expression in two genes was found in 6.2 % of patients. In the two subgroups with and without MSH2 and/or MSH6 staining, there was no difference in patients' mean age and history of prostate cancer. There was also no difference in tumor-related behaviors including combined Gleason grade group, tumor stage, vascular invasion, perineural invasion, and prostatic capsular invasion between the groups with and without gene loss. ConclusionThe evaluation of the deficient rate of two genes among patients with prostate cancer to predict the tumor grade and its aggressive behavior needs further study in every population.
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