Our results are consistent with a recent study on Nav1.7 channels in induced pluripotent stem cell‐derived nociceptors from CIP patients: The authors showed that in neurons with biallelic expression of a CIP mutation, restoring one deficient Nav1.7 allele was sufficient to regain some, but not all, of the electrophysiological functions of these neurons (McDermott et al., 2019). Here, SCN9A is linked to hereditary sensory and autonomic neuropathy.