PIP5K1A and posterior cortical atrophy: As reported in our previous studies, we found that clinically relevant gene profiles that are associated with PIP5K1α/AKT in subgroups of patients, and that elevated level of PIP5K1α was associated with poorer patient outcome [16] We therefore examined expression profiles of the target genes of tamoxifen identified by RNA‐seq as mentioned above by using primary tumors from PCa patients.