Mast syndrome
MONDO:0009568Autosomal 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.
Also known as: Mast syndrome, SPG21, autosomal recessive spastic paraplegia type 21, mast syndrome, spastic paraplegia 21, autosomal recessive
2 clinical trials for this condition and its sub-types, 0 tagged with Mast syndrome itself.
Follow this condition to get notified about new trialsWhere it sits in the disease tree
Browse by category →-
Can ultrasound make botox injections more precise for stiff muscles?
Disease control Recruiting nowThis trial tests whether using ultrasound to guide botulinum toxin injections into spastic leg muscles works better than the standard method of relying on touch and anatomical landmarks. Researchers will give 40 adults with spastic paraplegia two rounds of injections, one with ea…
Phase 4 • Sponsor: Universidade Federal Fluminense • Aim: Disease control
Last updated Sep 05, 2026 00:00 UTC
-
Can a massive natural history study unlock the secrets of rare movement disorders?
Knowledge-focused Recruiting nowThis study follows thousands of people with ataxia, hereditary spastic paraplegia, and spastic ataxia, rare conditions that cause progressive problems with walking, balance, and coordination. Researchers will track how symptoms evolve using clinical exams, patient reports, digita…
Sponsor: Heidelberg University • Aim: Knowledge-focused
Last updated Sep 03, 2026 00:00 UTC