Our immunohistochemistry and immunofluorescence observations are at variance with results reported in a previous study [43], where a commercial rabbit antiserum against PLEKHA7 did not show any labeling in normal breast tissue and low grade ductal carcinomas, but showed strong labeling in high grade ductal carcinomas and lobular carcinomas. This evidence concerns the gene PLEKHA7 and breast ductal adenocarcinoma.