Orphan receptor that regulates migration of lymphatic endothelial cells via the small GTPases RhoA and CDC42 (By similarity). Regulates B-cell development (PubMed:24113187). Seems to signal through G-alpha(q)-proteins (By similarity). Specifically expressed in intestinal lymphatic endothelium. No visible phenotype. Mutant mice show altered follicular-versus-marginal zone B-lymphocyte fate decision in the spleen and decreased numbers of B220+ lymphocytes in the bone marrow. Belongs to the G-protein coupled receptor 2 family. Adhesion G-protein coupled receptor (ADGR) subfamily.