CNTN1 and peripheral neuropathy: Autoantibodies against proteins in the nodal and paranodal regions were found in a subset of patients with peripheral neuropathy, including anti‐contactin 1 (CNTN1), anti‐neurofascin 155 (NF155), anti‐contactin‐associated protein 1 (Caspr1) and anti‐neurofascin 186 (NF186).1, 2, 3, 4, 5