Other quinazoline‐related compounds such as doxazosin and terazosin, shown here to only marginally affect GICs, have been reported to exert pro‐apoptotic effects on prostate cancer cells independently from ARs, through the activation of TGFβ signaling pathway (Desiniotis & Kyprianou, 2011). Here, TGFB1 is linked to prostate cancer.