CYP19A1 and endometrial cancer: In addition, the development of endometrial cancer is associated with single nucleotide polymorphism in the KLF (Krueppel-like factor 1), HNF1B (hepatocyte nuclear factor 1 homeobox B), CYP19A1 (cytochrome P450 family 19 subfamily A member 1), EIF2AK (eukaryotic translation initiation factor 2 alpha kinase), MYC (MYC proto-oncogene), and SOX4 (SRY-box transcription factor 4) genes [76,84].