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Distal 22q11.2 microduplication syndrome is a rare chromosomal anomaly syndrome, resulting from the partial duplication of the long arm of chromosome 22, with a highly variable phenotype principally characterized by developmental delay, intellectual disability, hypotonia, growth retardation, velopharyngeal insufficiency, mild craniofacial dysmorphism (microcephaly, tall/broad forehead, small downslating palpebral fissures, hooded eyelids, flat nasal bridge, low posterior hairline) and digital anomalies. Congenital heart malformations, visual and hearing impairment, urogenital abnormalities, behavourial problems and seizures have also been reported.
Estimated prevalence: Unknown (Unknown prevalence).
No clinical trials have been registered for distal 22q11.2 microduplication syndrome.
1 publication has been identified in PubMed for distal 22q11.2 microduplication syndrome. Research spans Case Report / Case Series (100%).
Jiang X (2024). [PMID: 39031005](https://pubmed.ncbi.nlm.nih.gov/39031005/). *Molecular genetics & genomic medicine*. [Case Report / Case Series]
Data assembled from 3 of 12 sources · Last updated Sep 19, 2026, 9:40 PM UTC
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