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Features include always present findings: Hyporeflexia and Fasciculations; and very common findings: Muscle spasm and Proximal muscle weakness. 11 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Muscles | 6 | Muscle spasm, Distal muscle weakness, Fasciculations |
Brain and nerves | 4 | Hyporeflexia, EMG: neuropathic changes, Fasciculations |
Age of onset: middle age.
VAPB function has not been fully characterized.
Adult-onset proximal spinal muscular atrophy, autosomal dominant is associated with mutations in the VAPB gene on chromosome 20.
Genetic testing for VAPB is available. Testing is considered confirmatory for diagnosis.
Biomarker and diagnostic research for adult-onset proximal spinal muscular atrophy, autosomal dominant has been reported in the published literature.
3 FDA-approved treatments are available for adult-onset proximal spinal muscular atrophy, autosomal dominant, including NUSINERSEN (SPINRAZA, approved 2016), onasemnogene abeparvovec-xioi (Zolgensma, approved 2019), and RISDIPLAM (EVRYSDI, approved 2020).
Brand Name | Generic Name | Mechanism | Approved | Market Status |
|---|---|---|---|---|
EVRYSDI | RISDIPLAM | — | 2020 | Available |
Zolgensma | onasemnogene abeparvovec-xioi | — | 2019 | Available |
SPINRAZA | NUSINERSEN | — | 2016 | Available |
Gene therapy approaches for adult-onset proximal spinal muscular atrophy, autosomal dominant have been reported in the published literature.
View trials for adult-onset proximal spinal muscular atrophy, autosomal dominant
Phenotype severity distribution: 2 always present features, 2 very common features, 1 common feature.
Estimated prevalence: 1-9 in 1,000,000 (Rare).
No clinical trials have been registered for adult-onset proximal spinal muscular atrophy, autosomal dominant.
116 publications have been identified in PubMed for adult-onset proximal spinal muscular atrophy, autosomal dominant. Research spans Basic Science / Preclinical (23%), Clinical Trial Publication (22%), and Epidemiology / Natural History (22%).
Research Type | Count | % of Total |
|---|---|---|
Laboratory research | 27 | 23% |
Clinical study results | 26 | 22% |
Disease patterns and progression | 26 | 22% |
Research summaries | 12 | 10% |
Patient case studies | 9 | 8% |
Testing and diagnosis research | 8 | 7% |
New treatment approaches | 6 | 5% |
Other research | 2 | 2% |
Toivonen J (2026). [PMID: 41861673](https://pubmed.ncbi.nlm.nih.gov/41861673/). *JHEP Rep*. [Epidemiology / Natural History]
Erbas Y (2026). [PMID: 41291051](https://pubmed.ncbi.nlm.nih.gov/41291051/). *Gene Ther*. [Review / Meta-Analysis]
Crawford TO (2026). [PMID: 41233939](https://pubmed.ncbi.nlm.nih.gov/41233939/). *Expert review of neurotherapeutics*. [Case Report / Case Series]
Sideris D (2026). [PMID: 41649246](https://pubmed.ncbi.nlm.nih.gov/41649246/). *eLife*. [Clinical Trial Publication]
Kagiava A (2026). [PMID: 42134074](https://pubmed.ncbi.nlm.nih.gov/42134074/). *EBioMedicine*. [Review / Meta-Analysis]
Proud CM (2026). [PMID: 41360993](https://pubmed.ncbi.nlm.nih.gov/41360993/). *Nature medicine*. [Clinical Trial Publication]
Li C (2026). [PMID: 41986737](https://pubmed.ncbi.nlm.nih.gov/41986737/). *Nat Med*. [Diagnostic / Biomarker]
Cicala G (2026). [PMID: 42163975](https://pubmed.ncbi.nlm.nih.gov/42163975/). *EClinicalMedicine*. [Epidemiology / Natural History]
Orbach R (2026). [PMID: 42135902](https://pubmed.ncbi.nlm.nih.gov/42135902/). *Ann Clin Transl Neurol*. [Diagnostic / Biomarker]
Rolle C (2026). [PMID: 41187020](https://pubmed.ncbi.nlm.nih.gov/41187020/). *Clin Infect Dis*. [Epidemiology / Natural History]
Data assembled from 7 of 12 sources · Last updated Sep 21, 2026, 4:53 AM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about adult-onset proximal spinal muscular atrophy, autosomal dominant