PROM2 and neoplasm: Using immunostaining, we also found a significantly larger number of cells expressing the EMT markers ZEB1 and SNAIL/SLUG in PROM2+ tumours (respectively 68 ± 5 and 82 ± 6%) compared with PROM2‐ tumours (respectively 7 ± 6 and 11 ± 4%, p < .01 for the two markers) (Figure 2D).