May regulate MET signaling cascade. Seems to decrease hepatocyte growth factor (HGF)-induced transient MAPK activation. Blocks GRB2 recruitment to MET thus suppressing the GRB2-RAS pathway. Inhibits HGF-induced proliferation of MMP1 and MMP9 expression (By similarity). Interacts with MET; oligomerization increases affinity for MET. Highly expressed in kidney. Up-regulated in renal tissues during renal injury.