May function as a transcription factor. May be a component of a BHC histone deacetylase complex that contains HDAC1, HDAC2, HMG20B/BRAF35, KDM1A, RCOR1/CoREST, PHF21A/BHC80, ZNF198, ZNF217, ZMYM3, GSE1 and GTF2I.