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A syndromal osteochondrodysplasia due to a contiguous gene deletion syndrome, characterized by progressive bowing of forearms and forelegs leading to mesomelia, progressive intracarpal or intratarsal bone fusion and fusion of metacarpal bones with proximal phalanges, ptosis, hypertelorism, abnormal soft palate, congenital heart defect, and ureteral anomalies.
Features include always present findings: Tibial bowing, Short foot, Absent uvula, and Tarsometatarsal synostosis and others; and very common findings: Distal femoral bowing and Short metatarsal. 32 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Arms and legs | 5 | Short foot, Ulnar deviation of the hand or of fingers of the hand, Ulnar deviation of the hand |
Phenotype severity distribution: 14 always present features, 2 very common features, 4 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for mesomelia-synostoses syndrome.
3 publications have been identified in PubMed for mesomelia-synostoses syndrome. Research spans Review / Meta-Analysis (67%) and Epidemiology / Natural History (33%).
Aubert Mucca M (2026). [PMID: 41339098](https://pubmed.ncbi.nlm.nih.gov/41339098/). *Clinical genetics*. [Epidemiology / Natural History]
Leduc F (2025). [PMID: 40673520](https://pubmed.ncbi.nlm.nih.gov/40673520/). *Clinical genetics*. [Review / Meta-Analysis]
Bendas Feres Lima I (2024). [PMID: 38992676](https://pubmed.ncbi.nlm.nih.gov/38992676/). *Molecular cytogenetics*. [Review / Meta-Analysis]
Data assembled from 5 of 12 sources · Last updated Sep 19, 2026, 7:49 AM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Bones and joints |
3 |
Partial fusion of proximal row of carpal bones, Distal femoral bowing, Abnormal vertebral morphology |
Brain and nerves | 2 | Global developmental delay, Hypernasal speech |
Ears | 1 | Hearing loss (hearing impairment) |
Eyes | 1 | Ptosis |
Growth and development | 1 | Mesomelic short stature |