LRRFIP1 is a transcriptional repressor which preferentially binds to the GC-rich consensus sequence (5'- AGCCCCCGGCG-3') and may regulate expression of TNF, EGFR and PDGFA [1]. LRRFIP2 may function as activator of the canonical Wnt signalling pathway, in association with DVL3, upstream of CTNNB1/beta-catenin [2].

1: GCF2/LRRFIP1 represses tumor necrosis factor alpha expression. Suriano AR, Sanford AN, Kim N, Oh M, Kennedy S, Henderson MJ, Dietzmann K, Sullivan KE; Mol Cell Biol. 2005;25:9073-9081. PMID:16199883

2: Identification of the Wnt signaling activator leucine-rich repeat in Flightless interaction protein 2 by a genome-wide functional analysis. Liu J, Bang AG, Kintner C, Orth AP, Chanda SK, Ding S, Schultz PG; Proc Natl Acad Sci U S A. 2005;102:1927-1932. PMID:15677333