The IHC results showed that the expression of 14‐3‐3 was not obviously different between normal ovarian tissues and paired primary ovarian cancer, omentum metastasis and peritoneum metastasis tissues, while the expression of p‐Tau (S324) and p‐Tau (S214) was decreased significantly in paired primary ovarian cancer, omentum metastasis and peritoneum metastasis tissues compared with normal ovarian tissues and was lowest in omentum metastasis and peritoneum metastasis tissues (Figure 7G). Here, MAPT is linked to ovarian carcinoma.