YEATS4 and glioblastoma: As a member of a relatively newly discovered epigenetic reading protein family, characterized by the presence of N-terminal YEATS domain (Schulze et al., 2009), YEATS4 was first identified and isolated from glioblastoma in 1997 (Fischer et al., 1997); therefore, it is also known as the glioma amplification gene (GAS41).