ABSTRACT
AIM: To evaluate the expression and prognostic value of RARRES1 at protein level in renal cell carcinoma (RCC). MATERIALS & METHODS: Expression profile of RARRES1 was analyzed in 903 documented RCC followed by clinicopathological correlations and survival analysis. RESULTS: RARRES1 expression was seen in 72.5% of RCC. A stronger RARRES1 expression was seen in high grade compared with low grade RCC (p < 0.001). Logrank tests revealed shorter overall survival in RARRES1 positive RCC (p = 0.006) and in pT1/2 tumors with RARRES1 expression (p = 0.002). CONCLUSION: The variable expression profile in low and high grade RCC may reflect and confirm the differences of previous gene expression analysis. There was a significant prognostic value of RARRES1 expression in patients with RCC, especially in pT1/2 tumors.
