Fig. 3From: Increased serum level of soluble interleukin-2 receptor is associated with a worse response of metastatic clear cell renal cell carcinoma to interferon alpha and sequential VEGF-targeting therapySpearman rank correlation between sIL-2R and Akt in the primary tumors and PD-L1. Spearman rank correlation between the preoperative serum sIL-2R level and the expression levels of phosphorylated Akt(Ser-473) in the primary tumors (a), and preoperative serum PD-L1 level (b)Back to article page