CNTN1 and Leigh syndrome: Sinreich et al. [1] also mentioned other variants of CIDP such as classic CIDP presenting with symmetric proximal and distal motor predominant symptoms; MMN (multifocal motor neuropathy) with only motor symptoms but multifocal; paraprotein associated CIDP with distal sensory predominance similar to distal acquired demyelinating symmetric neuropathy (DADS); Lewis-Sumner syndrome (LSS) with multifocal sensorimotor; chronic sensory demyelinating neuropathy (pure sensory variant of CIDP) [11] with purely sensory symptoms such as paranoidal neuropathies (contactin-1-associated CIDP) [12,13].