As expected, the discrimination against CIDP was worst because TTR‐FAP shares more clinical and neurophysiological similarities with CIDP than with dPNP or CIN (Mathis, Magy, Diallo, Boukhris, & Vallat, 2012; Plante‐Bordeneuve, 2014). This evidence concerns the gene TTR and chronic inflammatory demyelinating polyradiculoneuropathy.