In comparisons of individual OMS treatment groups versus untreated OMS (data not shown), significantly lower mean CSF BAFF concentrations (pg/mL) were found for ACTH (88 ± 59, -61%, P < 0.0001), steroid (140 ± 148, -38%, P = 0.002), ACTH + IVIg (113 ± 92, -50%, P < 0.0001), steroid + IVIg (114 ± 42, -49%, P = 0.0002), ACTH + other (89 ± 76, -60%, P < 0.0001), and steroid + other (115 ± 52, -49%, P = 0.005). Here, TNFSF13B is linked to opsoclonus-myoclonus syndrome.