17p duplication (Q92853)

Trisomy 17p is a rare chromosomal abnormality resulting from the duplication of the short arm of chromosome 17 and characterised by pre- and post-natal growth retardation, developmental delay, hypotonia, digital abnormalities, congenital heart defects, and distinctive facial features. Facial dysmorphism includes microcephaly, receding forehead, down-slanting palpebral fissures, ptosis, hypertelorism, low-set malformed ears, smooth philtrum, micrognathia, high-arched palate and a short broad neck. Digital abnormalities include absent fourth and fifth digits, brachydactyly and fifth finger clinodactyly.