Neuronopathy, Distal Hereditary Motor, Autosomal Dominant 8, also known as autosomal dominant congenital benign spinal muscular atrophy, is related to progressive muscular atrophy and fungal meningitis. An important gene associated with Neuronopathy, Distal Hereditary Motor, Autosomal Dominant 8 is TRPV4 (Transient Receptor Potential Cation Channel Subfamily V Member 4). Related phenotypes are hypotonia and joint stiffness