Filippi syndrome

Filippi syndrome is a rare autosomal-recessive disorder characterized by mild to severe mental retardation, syndactyly of the fingers and toes, microcephaly, pre and postnatal growth retardation, and unusual facies. Syndactyly of hands and feet seems to be the hallmark of the syndrome; 3-4 finger syndactyly being the most common. The facial appearance, including prominent nasal bridge with hypoplastic alae nasi, is similar in all patients. It has been shown that loss-of-function mutations in CKAP2L are a major cause of Filippi syndrome.