May function as activator of the canonical Wnt signaling pathway, in association with DVL3, upstream of CTNNB1/beta-catenin. Positively regulates Toll-like receptor (TLR) signaling in response to agonist probably by competing with the negative FLII regulator for MYD88-binding (By similarity). Interacts with DVL3 and FLII (By similarity). Weakly interacts with MYD88 in resting cells. Following LPS-stimulation, the interaction with MYD88 is rapidly enhanced; the complex gradually dissociates to basal levels after 6 hours of stimulation. Interaction with MYD88 is regulated by LPS-induced phosphorylation. In the presence of LPS, competes with FLII for MYD88-binding (By similarity). Belongs to the LRRFIP family.