The function of ENSG00000107738 (VSIR, V-set immunoregulatory receptor) is as follows. Immunoregulatory receptor which inhibits the T-cell response (PubMed:24691993). May promote differentiation of embryonic stem cells, by inhibiting BMP4 signaling (By similarity). May stimulate MMP14- mediated MMP2 activation (PubMed:20666777). {ECO:0000250|UniProtKB:Q9D659, ECO:0000269|PubMed:20666777, ECO:0000269|PubMed:24691993}.