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Any X-linked syndromic intellectual disability in which the cause of the disease is a mutation in the UPF3B gene.
Features include always present findings: Mild intellectual disability; and very common findings: Intellectual disability. 23 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Head and neck | 6 | High palate, Macrocephaly, Narrow face |
Brain and nerves | 4 | Mild intellectual disability, Intellectual disability, Autistic behavior |
Bones and joints | 2 | Sideways curvature of the spine (scoliosis), Excessive outward curvature of the upper spine (kyphosis) |
Muscles | 1 | Low muscle tone (hypotonia) |
Digestive system | 1 | Chronic constipation |
Growth and development | 1 | Tall stature |
Arms and legs | 1 | Long foot |
UPF3B function has not been fully characterized.
Syndromic X-linked intellectual disability 14 is associated with mutations in the UPF3B gene on chromosome X.
Genetic testing for UPF3B is available. Testing is considered confirmatory for diagnosis.
Biomarker and diagnostic research for syndromic X-linked intellectual disability 14 has been reported in the published literature.
Phenotype severity distribution: 1 always present feature, 1 very common feature, 9 common features.
No clinical trials have been registered for syndromic X-linked intellectual disability 14.
84 publications have been identified in PubMed for syndromic X-linked intellectual disability 14. Research spans Basic Science / Preclinical (31%), Case Report / Case Series (18%), and Epidemiology / Natural History (18%).
Research Type | Count | % of Total |
|---|---|---|
Laboratory research | 26 | 31% |
Patient case studies | 15 | 18% |
Disease patterns and progression | 15 | 18% |
Testing and diagnosis research | 8 | 10% |
Research summaries | 8 | 10% |
Clinical study results | 8 | 10% |
New treatment approaches | 3 | 4% |
Other research | 1 | 1% |
Duan H (2026). [PMID: 42244324](https://pubmed.ncbi.nlm.nih.gov/42244324/). *Zhong Nan Da Xue Xue Bao Yi Xue Ban*. [Review / Meta-Analysis]
Liang Q (2026). [PMID: 41198829](https://pubmed.ncbi.nlm.nih.gov/41198829/). *J Hum Genet*. [Basic Science / Preclinical]
Maltman N (2026). [PMID: 41403372](https://pubmed.ncbi.nlm.nih.gov/41403372/). *Autism*. [Epidemiology / Natural History]
Zhao L (2026). [PMID: 41960028](https://pubmed.ncbi.nlm.nih.gov/41960028/). *Front Pediatr*. [Case Report / Case Series]
Patel K (2026). [PMID: 40820925](https://pubmed.ncbi.nlm.nih.gov/40820925/). *J Pediatr Orthop*. [Clinical Trial Publication]
Lubbers K (2026). [PMID: 39395123](https://pubmed.ncbi.nlm.nih.gov/39395123/). *J Autism Dev Disord*. [Basic Science / Preclinical]
Boeri S (2026). [PMID: 41724124](https://pubmed.ncbi.nlm.nih.gov/41724124/). *Epilepsy Behav*. [Case Report / Case Series]
Thurman AJ (2026). [PMID: 39251531](https://pubmed.ncbi.nlm.nih.gov/39251531/). *J Autism Dev Disord*. [Diagnostic / Biomarker]
Martinez Diaz D (2026). [PMID: 40971552](https://pubmed.ncbi.nlm.nih.gov/40971552/). *J Child Neurol*. [Basic Science / Preclinical]
Byiers B (2026). [PMID: 41340519](https://pubmed.ncbi.nlm.nih.gov/41340519/). *J Intellect Disabil Res*. [Diagnostic / Biomarker]
Data assembled from 5 of 12 sources · Last updated Sep 19, 2026, 1:10 PM UTC
Online Mendelian Inheritance in Man