N6-methyladenosine (m6A) modification, mainly controlled by the m6A methyltransferase METTL3, is crucial for RNA regulation and the development of leukemia. However, how METTL3 stability and function are regulated after translation is not fully understood. Since O-GlcNAcylation commonly modifies nuclear and cytosolic proteins, researchers have hypothesized that METTL3 may be O-GlcNAcylated, affecting its stability and oncogenic activity in myeloid malignancies.