KDM5C (JARID1C) encodes a histone demethylase that is involved in the regulation of transcription and chromatin remodeling. Mutations in KDM5C are noted in about 8% of clear cell renal cancers, and are associated with advanced stage, grade and tumor invasiveness. However, KDM5C- mutated metastatic renal cell cancer are associated with an improved progression free survival in response to sunitinib.