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A rare genetic multiple congenital anomalies/dysmorphic syndrome with characteristics of congenital microcephaly with facial dysmorphism (sloping forehead, prominent nose, mild retrognathia), moderate to severe, non-progressive intellectual disability and symmetrical digital malformations of variable degree, including brachydactyly of the fifth fingers with single flexion crease, clinodactyly, syndactyly, polydactyly and hallux valgus. Congenital anonychia and white cafe au lait-like spots on the skin of hands and feet are also associated. There is evidence this disease is caused by homozygous mutation in the RBBP8 gene on chromosome 18q11.2.
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