A rare chromosomal anomaly syndrome, resulting from the partial deletion of the long arm of chromosome 3. The syndrome has characteristics of mild to severe intellectual disability, neuropsychiatric disorders of the psychotic and dysthymic spectrum, mild distinctive facial dysmorphism (including slender face, deep-set eyes, high nasal bridge with a hooked nose, small, low set ears, short philtrum, small mouth with thin upper lip, prognathism) and a marfanoid habitus. [from
SNOMEDCT_US]