AR and posterior cortical atrophy: We investigated the transcriptomic differences between WIT‐enriched luminal progenitors versus mature luminal cells [11] (Fig. 4D) and found that luminal progenitors were enriched in signatures associated with SC and cell proliferation (Fig. 4Da, Fig. 4Db, respectively) whereas mature luminal cells were enriched in signatures associated with mature mammary luminal cells (Fig. 4De), androgen responsiveness (Fig. 4Df), active AR pathway (Fig. 4Dg), and androgen‐dependent PCa cells (LNCaP‐AD) (Fig. 4Dh).