SHP2 can associate with GRB2 (Stein-Gerlach et al. 1995). IL-3 induces the phosphorylation of SHP2 and its association with GRB2 (Welham et al. 1994).
SHP2 may act as a scaffold protein to recruit other signaling molecules, e.g. SHP2 was reported to link GRB2 to the receptor tyrosine kinase c-kit (Tauchi et al. 1994).