RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
This term is obsolete.
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Definition:
A spastic paraplegia characterized by onset of symptoms in the first year of life. Affected individuals show delayed motor development with walking difficulties due to spasticity of the lower limbs. Caused by heterozygous mutation in the KPNA3 gene on chromosome 13q14.