However, different beta-catenin and mismatch repair protein expression patterns can be helpful 50,56,57, and vimentin staining may also be useful as in one study 82% of endometrial endometrioid adenocarcinomas were positive, whereas 97% of ovarian endometrioid adenocarcinomas were negative 58. The gene discussed is VIM; the disease is endometrial endometrioid adenocarcinoma.