Growth factor receptor-bound protein 10 is a protein belongs to a small family of adapter proteins that are known to interact with a number of receptor tyrosine kinases and signaling molecules. This gene encodes a growth factor receptor-binding protein that interacts with insulin receptors and insulin-like growth-factor receptors. Overexpression of some isoforms of the encoded protein inhibits tyrosine kinase activity and results in growth suppression. This gene is imprinted in a highly isoform- and tissue-specific manner. GRB10 gene is alternatively spliced, producing transcripts that encode proteins either with or without a 46-amino acid stretch that contains part of the PH domain. The SH2 and PH domains of the human GRB10 protein are 99% and 84% identical, respectively, to those of mouse Grb10.