Any hereditary sensory and autonomic neuropathy type 2 in which the cause of the disease is a mutation in the KIF1A gene. The disease is Monarch Disease Ontology identifier MONDO_0013634 (neuropathy, hereditary sensory, type 2C). Also known as: HSN2C, KIF1A hereditary sensory and autonomic neuropathy type 2, hereditary sensory and autonomic neuropathy type 2 caused by mutation in KIF1A, hereditary sensory neuropathy type IIC.