revealed correlations between levels of Myelin Oligodendrocyte Glycoprotein (MOG) as well as Myelin‐Associated Glycoprotein (MAG) in serum, as well as FA and mean diffusivity in the WM of the frontal lobe bilaterally in treatment‐naïve MDD patients, but not in healthy subjects (Jiang et al., 2018). Here, MAG is linked to major depressive disorder.