YAP1 and cancer: Because YAP1 expression was also linked to a positive ERG status, it was not surprising to find that high nuclear and cytoplasmic YAP1 staining was linked to deletions of 8p, 10q (PTEN), 16q and 17p (p < 0.0001) if all cancers were jointly analysed (Supplementary Figs. S2, S3).