NFASC and chronic inflammatory demyelinating polyradiculoneuropathy: Anti-NF antibodies are found in about 4–18% in patients with CIDP and acute inflammatory demyelinative polyradiculoneuropathy (AIDP) (Ng et al., 2012; Ogata et al., 2015); the positive rate of NF186 is lower than that of NF155 in CIDP, which is probably due to the paranode maintenance effect to sodium channels.