True MOGAD Calculator

1

Titers: Are MOG antibody titers clear positive?

2

Relapsing Optic Neuritis: >=3 optic neuritis attacks?

3

Under 18 years old at onset?

4

Encephalitis phenotype of ADEM or cerebral cortical encephalitis (CCE) at onset?

5

MRI or other supportive features per 2023 criteria present (≥1)? Select based on which syndrome prompted MOG-IgG testing.

6

Oligoclonal bands (or kappa free light chains) positive in the CSF?

7

Gradually progressive course with onset to nadir > 3 months?

8

Abrupt or hyperacute onset reaching nadir < 24 hours?

9

Disappearance of >=1 T2-lesion in brain or spinal cord on follow-up MRI?