Synonyms: Mast syndrome | SPG21
Autosomal recessive spastic paraplegia type 21 is a complex type of hereditary spastic paraplegia characterized by an onset in adolescence or adulthood of slowly progressive spastic paraparesis associated with the additional manifestations of apraxia cognitive and speech decline (leading to dementia and akinetic mutism in some cases) personality disturbances and extrapyramidal (e.g. oromandibular dyskinesia rigidity) and cerebellar (i.e. dysdiadochokinesia and incoordination) signs. Subtle abnormalities (e.g. developmental delays) may be noted earlier in childhood. A thin corpus callosum and white matter abnormalities are equally reported on magnetic resonance imaging.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview. Reference: Access aggregated data from Orphanet at Orphadata. Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version October 2024
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Autosomal recessive spastic paraplegia type 21?
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Advocacy Organizations
COMBINEDBrain Inc
COMBINEDBrain is a consortium for outcome measures and biomarkers for neurodevelopmental disorders. We are collaborating to cure rare, non-verbal brain disorders.
Eleanor Kaplan Foundation Inc.
The Eleanor Kaplan Foundation or TeamLeni, is a 501c3 to raise awareness, fund and establish research programs and develop curative therapeutics for SPG49 and all TECPR2 related disorders.
Genetic Support Network of Victoria
The Genetic Support Network of Victoria is an organisation that supports people living with genetic, undiagnosed and rare conditions and those who support them including community and families, patient support organisations, health professionals and industry. Our vision is our community flourishing and living their best lives.
KIF1A.ORG
KIF1A.ORG is a global community dedicated to improving the lives of those affected by KIF1A Associated Neurological Disorder (KAND) and accelerating research to find a cure.
Moonshots for Unicorns
Curing single-gene disorders
National Ataxia Foundation
Ataxia is a rare neurological disease affecting tens of thousands of people in the US and many thousands more around the world. It is progressive, affecting a person’s ability to walk, talk, and use fine motor skills. The National Ataxia Foundation (NAF) was established in 1957 to help persons with Ataxia and their families. Our mission is to accelerate the development of treatments and a cure
Project CASK
VISION Project CASK believes in a world free of the life limitations and debilitating effects of CASK gene disorders. MISSION To accelerate breakthroughs in research to develop treatments and a cure for CASK gene disorders. VALUES Collaboration. Transparency. Urgency.
Syndromes Without A Name (SWAN) Australia
Provide information, support and advocacy to families caring for a child with an undiagnosed or rare genetic condition.
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Clinical Trials
For a list of clinical trials in this disease area, please click here.