IFNA1 and neuromyelitis optica: Since we have identified ENSRNOT00000045433 (= “similar to IFN-α”) as up-regulated gene in ENMO spinal cords, and since NMO patients have an increased I-IFN signature in the serum [51,52], we next searched whether our gene expression studies by microarrays hit upon any other I-IFN-stimulated gene (ISG) in the ENMO spinal cords.