TAAR1 and clear cell adenocarcinoma: Ovarian clear cell carcinomas with smaller sizes of the primary tumor (pT1, n = 6) had a significantly higher TAAR1 expression (median IRS of 2.5) than clear cell carcinomas with a higher pT status (pT2, n = 3; pT3, n = 1) (median IRS of 0) (Figure 4a).