Heterozygous variants in SPAST have been reported in relation to pure spastic paraplegias (infantile, ascending), complicated or complex spastic paraplegia (with dementia, cerebellar ataxia, epilepsy, and/or peripheral neuropathy) and cerebral palsy. Age of symptom onset ranges from neonatal to advanced age with varying symptom severity,. The disease is MONDO_0100523 (SPAST-related motor disorder).