Together with SMCHD1, involved in chromosome X inactivation in females by promoting the compaction of heterochromatin (PubMed:23542155). Also able to repress the ligand-induced transcriptional activity of retinoic acid receptor alpha (RARA), possibly through direct recruitment of histone deacetylases (PubMed:17455211). Also required for silencing of the DUX4 locus in somatic cells (PubMed:32467133). {ECO:0000269|PubMed:17455211, ECO:0000269|PubMed:23542155, ECO:0000269|PubMed:32467133}. This is the function of Ensembl gene identifier ENSG00000121931 (LRIF1, ligand dependent nuclear receptor interacting factor 1).