AKT1 and renal cell carcinoma: In contrast, ectopic expression of SAV1 in both SAV1-deficient (Supplementary Fig. 3b) and SAV1-proficient RCC (Supplementary Fig. 3c and 3d) and in non-RCC cells (Supplementary Fig. 3e to 3g) led to attenuated Akt-pT308 levels, which was predominately mediated by the SAV1-WW domain (Supplementary Fig. 3h and 3i).