CA9 and renal cell carcinoma: When referring to clear cell papillary renal cell tumor, there was a strong statistically significant correlation, despite the threshold of positivity considered, with MiT family translocation renal cell carcinomas and negative expression of CA9 (p = 0.0001), CK7 (p = 0.0001), and GATA3 (p = 0.0001), along with positive expression of CD10 (p = 0.0001 with both a 5% and 10% cutoff and p = 0.0011 with a 20% cutoff), AMACR (p = 0.0001 with both a 5% and 10% cutoff and p = 0.0002 with a 20% cutoff), and cathepsin K (p = 0.0001).