In xCell database, the composition of 64 types of immune cell in each TCGA‐PRAD sample was displayed in Figure S2A, and age was positively correlated with the levels of aDCs, adipocytes, astrocytes, mesangial cells, pro B cells, Th2 cells, and Tgd cells, while negatively associated with myocytes, platelets, and smooth muscle (all p < 0.05, Figure S2B–K). Here, ABCA1 is linked to prostate adenocarcinoma.