Anti-myelin oligodendrocyte glycoprotein antibody positivity

What it means

Presence of antibodies in the serum that react against myelin oligodendrocyte glycoprotein.

Myelin oligodendrocyte glycoprotein (MOG), a member of the immunoglobulin (Ig) superfamily, is a myelin protein solely expressed at the outermost surface of myelin sheaths and oligodendrocyte membranes. MOG Abs can be found in a subset of predominantly pediatric patients with acute disseminated encephalomyelitis, aquaporin-4 seronegative neuromyelitis optica spectrum disorders, monophasic or recurrent isolated optic neuritis, or transverse myelitis, in atypical multiple sclerosis, and in N-methyl-d-aspartate receptor-encephalitis.

Rare diseases that can present with this3

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Anti-MOG antibody positivity