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Non-distal trisomy 9q is a rare chromosomal anomaly syndrome, resulting from the partial trisomy of the long arm of chromosome 9, with a highly variable phenotype principally characterized by developmental delay, short stature, intellectual disability, and craniofacial dysmorphism (e.g. microcephaly, broad forehead, low set ears, epicanthus, prominent nose, and retrognathia). Cardiac, ocular, thyroid and esophagus defects, as well as central nervous system and behavioral/psychiatric abnormalities, have also been reported.
No clinical trials have been registered for non-distal trisomy 9q.
1 publication has been identified in PubMed for non-distal trisomy 9q. Research spans Basic Science / Preclinical (100%).
Wright CA (2025). [PMID: 39924478](https://pubmed.ncbi.nlm.nih.gov/39924478/). *Mol Cytogenet*. [Basic Science / Preclinical]
Data assembled from 3 of 12 sources · Last updated Sep 20, 2026, 3:03 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center