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A syndrome that is caused by a variation in the SPEN gene and is characterized by developmental delay/intellectual disability, autism spectrum disorder, anxiety, aggressive behavior, attention deficit disorder, hypotonia, brain and spine anomalies, congenital heart defects, high/narrow palate, facial dysmorphisms, and obesity/increased BMI, especially in females.
Features include always present findings: Intellectual disability and Global developmental delay; and common findings: Epicanthus, Low muscle tone (hypotonia), Gait imbalance, and Aggressive behavior and others. 78 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 12 | Seizure, Gait imbalance, Ataxia |
SPEN function has not been fully characterized.
Radio-Tartaglia syndrome is caused by mutations in the SPEN gene on chromosome 1.
Genetic testing for SPEN is available. Testing is considered confirmatory for diagnosis.
Biomarker and diagnostic research for Radio-Tartaglia syndrome has been reported in the published literature.
Phenotype severity distribution: 2 always present features, 6 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for Radio-Tartaglia syndrome.
173 publications have been identified in PubMed for Radio-Tartaglia syndrome. Research spans Basic Science / Preclinical (35%), Review / Meta-Analysis (27%), and Case Report / Case Series (21%).
Research Type | Count | % of Total |
|---|---|---|
Laboratory research | 60 | 35% |
Data assembled from 7 of 12 sources · Last updated Sep 19, 2026, 7:03 AM UTC
Online Mendelian Inheritance in Man
European rare disease database
Common questions about Radio-Tartaglia syndrome
Head and neck
7 |
Coarse facial features, Microcephaly, High, narrow palate |
Digestive system | 3 | Gastroesophageal reflux, Constipation, Difficulty swallowing (dysphagia) |
Ears | 2 | Hearing loss (hearing impairment), Conductive hearing impairment |
Skin | 2 | Dry skin, Small nail |
Muscles | 1 | Low muscle tone (hypotonia) |
Arms and legs | 1 | Tapered finger |
Heart and blood vessels | 1 | Ventricular septal defect |
Pregnancy and birth | 1 | Fetal distress |
Bones and joints | 1 | Sideways curvature of the spine (scoliosis) |
Hormones | 1 | Precocious puberty |
Age of onset: before birth.
46 |
27% |
Patient case studies | 36 | 21% |
Disease patterns and progression | 23 | 13% |
Testing and diagnosis research | 3 | 2% |
Clinical study results | 3 | 2% |
New treatment approaches | 2 | 1% |
Xu D (2026). [PMID: 41232796](https://pubmed.ncbi.nlm.nih.gov/41232796/). *Exp Neurol*. [Basic Science / Preclinical]
Li Y (2026). [PMID: 41781242](https://pubmed.ncbi.nlm.nih.gov/41781242/). *Br J Anaesth*. [Review / Meta-Analysis]
Lee E (2026). [PMID: 41556401](https://pubmed.ncbi.nlm.nih.gov/41556401/). *Human molecular genetics*. [Basic Science / Preclinical]
Dai Y (2026). [PMID: 41664155](https://pubmed.ncbi.nlm.nih.gov/41664155/). *Int J Dev Neurosci*. [Case Report / Case Series]
Hayashi Y (2026). [PMID: 41408479](https://pubmed.ncbi.nlm.nih.gov/41408479/). *J Hum Genet*. [Basic Science / Preclinical]
He Y (2026). [PMID: 41574619](https://pubmed.ncbi.nlm.nih.gov/41574619/). *International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience*. [Case Report / Case Series]
Ghosh S (2026). [PMID: 41058046](https://pubmed.ncbi.nlm.nih.gov/41058046/). *Brain*. [Basic Science / Preclinical]
Silva A (2026). [PMID: 41291199](https://pubmed.ncbi.nlm.nih.gov/41291199/). *European journal of human genetics : EJHG*. [Basic Science / Preclinical]
Anderson EN (2026). [PMID: 41468891](https://pubmed.ncbi.nlm.nih.gov/41468891/). *Am J Hum Genet*. [Basic Science / Preclinical]
Idiazabal Alecha MA (2026). [PMID: 41696834](https://pubmed.ncbi.nlm.nih.gov/41696834/). *Medicina (B Aires)*. [Review / Meta-Analysis]