All patients were assessed clinically by experienced neurologists (K.S.G., C.S., T.W., N.M.). Cerebellar dysfunction was rated using the Scale for the Assessment and Rating of Ataxia (SARA)16 and documented by videography following written informed consent of the patients.
Control collectives included 37 healthy donors, 33 patients with neurologic symptoms and defined antineural autoantibodies (5× anti-NMDAR, 5× anti-Hu, 2× anti-Hu/anti-Ri, 3× anti-Yo, 2× anti-Yo/anti-Ri, 3× anti-Ri, 5× anti-AQP4, 5× anti-LGI1, 3× anti-CASPR2), 36 treatment-naive patients with relapsing-remitting multiple sclerosis (RRMS), 20 patients with the cerebellar type of multiple system atrophy (MSA-c), 35 patients with hereditary cerebellar ataxias, and 150 consecutive patients with various neurologic disorders collected from all participating neurologic departments.
Details on neuropsychological assessment and quantitative high-resolution structural MRI can be found in the e-Methods at Neurology.org/nn.
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