Monarch Disease Ontology identifier MONDO_0019890 (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. Also known as: non-distal duplication 9q, non-distal trisomy type 9q, non-telomeric trisomy 9q.