14q11.2 microduplication syndrome is a rare chromosomal anomaly characterized by developmental delay, mild to severe intellectual disability with speech impairment and epilepsy. Additionally, it may include dysmorphic features (such as hypo- or hypertelorism, dysplastic ears, short palpebral fissures), microcephaly or macrocephaly, behavioral abnormalities, stereotyped hand movements, ataxia, hypotonia, cleft palate. The disease is 14q11.2 microduplication syndrome (MONDO_0016835, a Monarch Disease Ontology term). Also known as: dup(14)(q11.2), trisomy 14q11.2.