The function of FGFBP1 (fibroblast growth factor binding protein 1, Ensembl gene identifier ENSG00000137440) is as follows. Acts as a carrier protein that release fibroblast-binding factors (FGFs) from the extracellular matrix (EM) storage and thus enhance the mitogenic activity of FGFs. Enhances FGF2 signaling during tissue repair, angiogenesis and in tumor growth. {ECO:0000269|PubMed:11509569, ECO:0000269|PubMed:15806171, ECO:0000269|PubMed:1885605, ECO:0000269|PubMed:9334727}.