As simultaneous wash-in was observed in the majority of ccRCCs (95.0%), in the wash-in pattern, there was a significant difference between Xp11.2/TFE3 RCC and ccRCC (P < 0.05) and between Xp11.2/TFE3 RCC and pRCC (P < 0.05). The gene discussed is PRCC; the disease is renal cell carcinoma.