A, Functional response to apheresis therapy is presented as the percentage of patients successfully treated with apheresis treatment, stratified according to pathological patterns; differences between patterns 1 and 3 and between patterns 2 and 3 are significant (P = .03 and P < .001, respectively). B, The percentage of patients with lesion improvement, as established by magnetic resonance imaging is shown; the difference between patterns 2 and 3 is significant (P = .03). C, The percentage of patients with an Expanded Disability Status Scale (EDSS) score in response to apheresis therapy is shown; the difference between patterns 2 and 3 is significant (P = .003). D, The median reductions in EDSS score within 1 month after apheresis therapy in therapy responders with pattern 1 and 2 lesions are shown. Bars and boxes define the minimum, 25th quartile, 75th quartile, and maximum changes in scores. the dots represent individual patients. Data to evaluate MRI and/or EDSS response were omitted when patient data were incomplete.