A selective tissue estrogen activity regulator exhibits weak estrogenic, progestogenic and androgenic activities, which, in theory, might influence the breast.

• 此类选择性组织虽激素活性调节剂的作用机转，同时具有人体三大性贺尔蒙受体刺激作用，包括雌激素受体、黄体素受体及男性素受体的作用。