The function of ROR1 (ROR family WNT receptor 1, ENSG00000185483) is as follows. Has very low kinase activity in vitro and is unlikely to function as a tyrosine kinase in vivo (PubMed:25029443). Receptor for ligand WNT5A which activates downstream NFkB signaling pathway and may result in the inhibition of WNT3A-mediated signaling (PubMed:25029443, PubMed:27162350). In the inner ear, crucial for spiral ganglion neurons to innervate auditory hair cells (PubMed:27162350). Via IGFBP5 ligand, forms a complex with ERBB2 to enhance CREB oncogenic signaling (PubMed:36949068). {ECO:0000269|PubMed:25029443, ECO:0000269|PubMed:27162350, ECO:0000269|PubMed:36949068}.