ABCB1 and prostate adenocarcinoma: Expression of ABCB1 has high variability between patients; we did not observe significant increase in the ABCB1 expression after taxanes treatment (Supplementary Fig. S5A, analysis of ABCB1 levels in chemotherapy naïve and taxanes treated patients, Metastatic Prostate Adenocarcinoma SU2C/PCF Dream Team dataset [52]).