Prakash et al. cloned a partial cDNA corresponding to the 3'UTR of the last exon of the gene (PubMed:7892239). They have shown that a synthetic peptide derived from this sequence could stimulate fibroblasts growth in vitro, and that this protein could be a fibrogenic lymphokine, that could stimulate several biological activities related to scarring. It would be expressed several cell types including CD4+ lymphocytes and fibroblasts. However, it was not confirmed by in vivo data. Truncated N-terminus. Contaminating sequence. Sequence of unknown origin in the N-terminal part.