TNFSF13B and chronic inflammatory demyelinating polyradiculoneuropathy: In immune-mediated neurological disorders, blood cytokines also emerge to be potential biomarkers, such as the B-cell–activating factor (BAFF) in myasthenia gravis with anti–acetylcholine receptor antibody (13, 14) and chronic inflammatory demyelinating polyneuropathy (CIDP) (15, 16).