PRCC and hepatocellular carcinoma: IHC was performed on HCC tissue microarray including clinical samples from 66 HCC patients, and found that PRCC expression was elevated in HCC tissues compared with the adjacent tissues in 43 (65.15%) pairs of samples, and was reduced in 13 (19.70%) pairs of samples, there was no significant difference in its expression in the remaining 10 (15.15%) pairs of samples (Fig. 1b).