MiT RCC, which was confirmed by IHC and fluorescent in situ hybridization (FISH), can be simplified as an immunophobic tendency; CK7 is generally negative to focally patchy (figure not shown), and EMA (Figure 5B1), CAIX (figure not shown), and CD10 (figure not shown) are also negative. The gene discussed is CA9; the disease is renal cell carcinoma.