Neuropathy, Hereditary Sensory and Autonomic, Type Ia, also known as hsan1a, is related to neuropathy, hereditary sensory and autonomic, type i, with cough and gastroesophageal reflux and neuropathy, hereditary sensory, type id. An important gene associated with Neuropathy, Hereditary Sensory and Autonomic, Type Ia is SPTLC1 (Serine Palmitoyltransferase Long Chain Base Subunit 1), and among its related pathways/superpathways are Metabolism and Sphingolipid metabolism. Affiliated tissues include skin and skeletal muscle, and related phenotypes are cataract and skeletal muscle atrophy