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Filippi syndrome

Other Names for this Disease
  • Syndactyly type I with microcephaly and mental retardation
  • Unusual facial appearance, microcephaly, growth and mental retardation and syndactyly
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What are the signs and symptoms of Filippi syndrome?

Filippi syndrome is characterized by growth delays before and after birth, a low birth weight, and short stature. Affected individuals are also born with abnormalities of the head and facial area (craniofacial abnormalities), resulting in a distinctive facial appearance. Affected infants typically have a small head (microcephaly), a high forehead, a broad bridge of the nose, thin nostrils, an abnormally thin upper lip, and widely spaced eyes (hypertelorism). Filippi syndrome is also characterized by mild to severe intellectual disability; some affected individuals may have abnormal language and speech development, potentially resulting in an inability to speak.[1][2]

Abnormalities of the fingers and toes have also been reported. These may include webbing or fusion of the fingers and toes (syndactyly). The severity of the syndactyly may be variable, ranging from webbing of skin and other soft tissues to fusion of bone within the affected fingers or toes. Affected individuals can also have extra fingers and/or toes (polydactyly). In addition, the fingers and toes may appear unusually short (brachydactyly), particularly due to abnormalities of the bones within the hands and feet.[1][2] 

Some individuals may have additional physical abnormalities including delayed bone age, incomplete closure of the roof of the mouth (cleft palate), and a dislocated elbow. In some affected males, the testes may fail to descend into the scrotum (cryptorchidism). In one report, skin and teeth abnormalities were also noted.[1][2]
Last updated: 9/14/2011

  1. Filippi Syndrome. National Organization for Rare Disorders (NORD). 2008; Accessed 9/14/2011.
  2. Battaglia A, Filippi T, Pusceddu S, Williams CA. Filippi syndrome: further clinical characterization. Am J Med Genet A. 2008; 146A(14):1848-52. Accessed 9/14/2011.