TAAR1 and metastatic malignant neoplasm in the lymph nodes: Patients diagnosed with ovarian endometrioid carcinoma without local lymph node metastases (pN0, n = 7) had a significantly higher TAAR1 expression (median IRS of 4) than patients with local lymph node metastases (pN1, n = 3) (median IRS of 3) (Figure 4b).