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Distal trisomy 22q is a rare chromosomal anomaly syndrome, resulting from the partial duplication of the long arm of chromosome 22, with variable phenotype principally characterized by varying degrees of intellectual disability and developmental delay, pre- and postnatal growth deficiency, hypotonia, and craniofacial dysmorphism (incl. microcephaly, hypertelorism, narrow and upslanted palpebral fissures, epicanthic folds, low-set dysplastic ears, broad and depressed nasal bridge, cleft lip an/or palate, long philtrum, retro/micrognathia). Congenital heart defects, as well as cerebral, skeletal, renal and genital anomalies, have also been reported.
No clinical trials have been registered for distal trisomy 22q.
3 publications have been identified in PubMed for distal trisomy 22q. Research spans Review / Meta-Analysis (33%), Basic Science / Preclinical (33%), and Epidemiology / Natural History (33%).
Wright CA (2025). [PMID: 39924478](https://pubmed.ncbi.nlm.nih.gov/39924478/). *Mol Cytogenet*. [Basic Science / Preclinical]
Nguyen MP (2025). [PMID: 40603285](https://pubmed.ncbi.nlm.nih.gov/40603285/). *Nat Commun*. [Epidemiology / Natural History]
Militaru MS (2024). [PMID: 39064028](https://pubmed.ncbi.nlm.nih.gov/39064028/). *J Pers Med*. [Review / Meta-Analysis]
Data assembled from 3 of 12 sources · Last updated Sep 19, 2026, 11:55 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center