However, when considering features of established importance in ACC prognosis, we did show that this is an important predictor of recurrence in the multivariate analysis—a Ki67 index > 10% (HR 9.87, 95% CI 4.39–22.2; p < 0.0001) and strong SOAT1 protein expression (HR 2.1, 95% CI 1.09–4.06; p = 0.027) were predictors of reduced RFS. Here, SOAT1 is linked to adrenal cortex carcinoma.