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A rare X-linked syndrome characterized by psychomotor delay, intellectual deficit, hydrocephalus, and mild facial anomalies.
Features include very common findings: Hydrocephalus, Low muscle tone (hypotonia), Global developmental delay, and Spastic diplegia and others; and common findings: High palate, Long face, Coarse facial features, and Short philtrum and others. 21 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 9 | Hydrocephalus, Aggressive behavior, Autistic behavior |
Phenotype severity distribution: 7 very common features, 9 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for fried syndrome.
3 publications have been identified in PubMed for fried syndrome. Research spans Case Report / Case Series (33%), Basic Science / Preclinical (33%), and Epidemiology / Natural History (33%).
Liu H (2026). [PMID: 41610613](https://pubmed.ncbi.nlm.nih.gov/41610613/). *Poult Sci*. [Basic Science / Preclinical]
Khanna R (2025). [PMID: 40502890](https://pubmed.ncbi.nlm.nih.gov/40502890/). *Cureus*. [Case Report / Case Series]
Langsted A (2025). [PMID: 39919129](https://pubmed.ncbi.nlm.nih.gov/39919129/). *PLoS One*. [Epidemiology / Natural History]
Data assembled from 4 of 12 sources · Last updated Sep 19, 2026, 7:55 AM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Head and neck |
3 |
High palate, Long face, Coarse facial features |
Muscles | 2 | Low muscle tone (hypotonia), Skeletal muscle atrophy |
Bones and joints | 2 | Sideways curvature of the spine (scoliosis), Skeletal muscle atrophy |
Ears | 1 | Hearing loss (hearing impairment) |
Eyes | 1 | Abnormal optic nerve morphology |