The function of Ensembl gene identifier ENSG00000173409 (ARV1, ARV1 fatty acid homeostasis modulator) is as follows. Plays a role as a mediator in the endoplasmic reticulum (ER) cholesterol and bile acid homeostasis (PubMed:11063737, PubMed:12145310, PubMed:20663892). Participates in sterol transport out of the ER and distribution into plasma membranes (PubMed:20663892). {ECO:0000269|PubMed:11063737, ECO:0000269|PubMed:12145310, ECO:0000269|PubMed:20663892}.