May function as activator of the canonical Wnt signaling pathway upstream of ctnnb1/beta-catenin. Might be required for dorsal axis formation. A shorter isoform, which probably corresponds to isoform 2, is expressed both maternally and zygotically throughout early development. Isoform 1 is expressed only after the mid-blastula transition (MBT), becoming readily detectable after stage 14. Belongs to the LRRFIP family.