PROM2 and breast cancer: In the PCDs risk model, we could observe BCAP31 (B cell receptor associated protein 31), BMF (Bcl2 modifying factor) and PROM2 (Prominin 2) significantly overexpressed in breast cancer compared with normal tissue, but NFKBIA (NFKB inhibitor alpha) and PARP3 (Poly ADP-ribose polymerase family member 3) showed down-expressed level, with significant prognostic value for BC (shown in Figure 9A–D, and Figure S2A–F).