C: HIFα- inducible breast cancer signature (HIFi-BCS). Left and middle/left: List of HIFα targets and overall survival in METABRIC (left) or recurrence- free survival in microarray (middle/left) from breast adenocarcinomas. Cases are classified as low (blue) or high (red) HIFi-BCS according to their relationship to the median. Kaplan-Meier analysis followed by log-rank test. Middle/right: HIFi-BCS and estrogen receptor (ER) status. Data are standardized as z-scores. t(112) = 3.789 and P= 0.0002 by Student t-test with Welch's correction. Right: HIFi-BCS is associated with worsened distant metastasis-free survival. Cases are classified as low (blue) or high (red) HIFi-BCS whenever they are below or above the distribution median. Kaplan-Meier analysis followed by log-rank test. 