ARL6IP1 and hereditary sensory and autonomic neuropathy: In humans, mutations in ARL6IP1 are linked to SPG61, a neurodegenerative disorder characterized by progressive leg spasticity and increased sensitivity to pain—symptoms that overlap with those of hereditary sensory and autonomic neuropathy (HSAN), a condition caused by FAM134B loss‐of‐function mutations (Foronda et al. 2023; Kurth et al. 2009).