The immunohistochemistry results were as follows: gastric adenocarcinoma, ER, PR, P16, and Vim (–), with P53 (+, positive cell count of 50%–60%); borderline serous tumor, ER, PR, P16, Vim, and WT-1 (–), P53 (+, positive cell count of 3%–5%); and borderline clear cell tumor, ER, PR, P16 (–), P504S (+), and NapsinA (+ partially). This evidence concerns the gene TP53 and gastric adenocarcinoma.