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An autosomal recessive inherited congenital muscular dystrophy caused by mutations in the POMT2 gene. It is characterized by mental retardation and mild structural brain abnormalities resulting from defective glycosylation of alpha-dystroglycan.
Features include always present findings: Inability to walk, Cerebral cortical atrophy, Low muscle tone (hypotonia), and Severe intellectual disability and others; and sometimes findings: Strabismus, Left ventricular systolic dysfunction, Pigmentary retinopathy, and Thickened left heart wall (left ventricular hypertrophy) and others. 33 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Muscles | 8 | Cerebral cortical atrophy, Flexion contracture, Low muscle tone (hypotonia) |
Brain and nerves | 5 | Inability to walk, Cerebral cortical atrophy, Severe intellectual disability |
Bones and joints | 3 | Excessive inward curvature of the lower spine (hyperlordosis), Sideways curvature of the spine (scoliosis), Skeletal muscle hypertrophy |
Head and neck | 2 | Facial palsy, Microcephaly |
Eyes | 2 | Strabismus, Pigmentary retinopathy |
Heart and blood vessels | 2 | Left ventricular systolic dysfunction, Thickened left heart wall (left ventricular hypertrophy) |
Lab test results | 1 | Elevated creatine kinase (muscle enzyme) (elevated circulating creatine kinase concentration) |
Lungs and breathing | 1 | Difficulty breathing (respiratory insufficiency) |
Age of onset: at birth.
POMT2 function has not been fully characterized.
Muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B2 is associated with mutations in the POMT2 gene on chromosome 14.
Genetic testing for POMT2 is available. Testing is considered confirmatory for diagnosis.
Biomarker and diagnostic research for muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B2 has been reported in the published literature.
Phenotype severity distribution: 8 always present features.
No clinical trials have been registered for muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B2.
100 publications have been identified in PubMed for muscular dystrophy-dystroglycanopathy (congenital with intellectual disability), type B2. Kisho has analyzed 49 by research type. Research spans Review / Meta-Analysis (22%), Basic Science / Preclinical (22%), and Case Report / Case Series (16%).
Research Type | Count | % of Total |
|---|---|---|
Research summaries | 11 | 22% |
Laboratory research | 11 | 22% |
Patient case studies | 8 | 16% |
Disease patterns and progression | 7 | 14% |
Testing and diagnosis research | 5 | 10% |
New treatment approaches | 5 | 10% |
Other research | 1 | 2% |
Clinical study results | 1 | 2% |
Johari M (2026). [PMID: 41678358](https://pubmed.ncbi.nlm.nih.gov/41678358/). *Brain*. [Basic Science / Preclinical]
Muelas N (2026). [PMID: 41054283](https://pubmed.ncbi.nlm.nih.gov/41054283/). *Ann Clin Transl Neurol*. [Case Report / Case Series]
Risso B (2025). [PMID: 41373710](https://pubmed.ncbi.nlm.nih.gov/41373710/). *Int J Mol Sci*. [Review / Meta-Analysis]
McCarty RM (2025). [PMID: 39923201](https://pubmed.ncbi.nlm.nih.gov/39923201/). *Ann Clin Transl Neurol*. [Case Report / Case Series]
Suhl J (2025). [PMID: 40546227](https://pubmed.ncbi.nlm.nih.gov/40546227/). *Muscle Nerve*. [Gene Therapy / Novel Therapeutics]
Madrigal I (2025). [PMID: 40488356](https://pubmed.ncbi.nlm.nih.gov/40488356/). *Neuropathol Appl Neurobiol*. [Case Report / Case Series]
Oswald S (2025). [PMID: 40296707](https://pubmed.ncbi.nlm.nih.gov/40296707/). *J Child Neurol*. [Case Report / Case Series]
Kulsirichawaroj P (2025). [PMID: 40494860](https://pubmed.ncbi.nlm.nih.gov/40494860/). *Pediatr Res*. [Diagnostic / Biomarker]
Trucco F (2025). [PMID: 39231278](https://pubmed.ncbi.nlm.nih.gov/39231278/). *Dev Med Child Neurol*. [Diagnostic / Biomarker]
Straub V (2025). [PMID: 41151001](https://pubmed.ncbi.nlm.nih.gov/41151001/). *Neurology*. [Diagnostic / Biomarker]
Data assembled from 5 of 12 sources · Last updated Sep 19, 2026, 12:37 AM UTC
Online Mendelian Inheritance in Man