GFAP and Autoimmunity: Astrocytes, presumably the main target cell of an anti-GFAP autoimmune reaction, play a vital role in multiple processes in the brain, including synapse formation, clearance of neurotransmitters, or modulation of synaptic activity and plasticity (reviewed in Vasile et al 2017), and an anti-GFAP autoimmunity, as reported in our manuscript, might therefore very well be linked to several neurological disorders as well to the specific autoimmune GFAP astrocytopathy (Kunchok et al 2019).