GAREM2 (GRB2 Associated Regulator of MAPK1 Subtype 2) is a gene involved in regulating the MAPK/ERK signaling pathway, which is essential for controlling cell growth, differentiation, and survival. It helps mediate cellular responses to external signals such as growth factors and stress. GAREM2 is of particular interest in cancer research, as disruptions in this pathway are commonly linked to tumor development.