A. Primary human breast cancers of the METABRIC dataset were stratified according to high or low YAP activity signature [47] and by TP53 mutational status, and then the levels of the cycline signature score were determined in the four groups. Cyclin activity is significantly higher in mut-p53 tumors with high levels of the YAP signature, as visualized by box-plot. Signature scores have been obtained summarizing the standardized expression levels of signature genes into a combined score with zero mean [7]. The values shown in graphs are thus adimensional. The bottom and top of the box are the first and third quartiles, and the band inside the box is the median; whiskers represent 1st and 99th percentiles; values lower and greater are shown as circles (p<0.0001, n=701). 