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Saethre Chotzen Syndrome

Abstract

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NORD is very grateful to Gareth Baynam, MBBS, PhD, Clinical Geneticist, King Edward Memorial Hospital, Australia, for assistance in the preparation of this report.

Synonyms of Saethre Chotzen Syndrome

  • acrocephalosyndactyly type III
  • acrocephaly, skull asymmetry, and mild syndactyly
  • ACS3
  • ACS type III
  • Chotzen syndrome
  • SCS

Disorder Subdivisions

  • No subdivisions found.

General Discussion

Saethre Chotzen syndrome (SCS) belongs to a group of rare genetic disorders known as "acrocephalosyndactyly" disorders. All of these are characterized by premature closure of the fibrous joints (cranial sutures) between certain bones of the skull (craniosynostosis), and/or webbing or fusion (syndactyly) of certain fingers or toes (digits).

In many infants with SCS, cranial sutures may fuse unevenly and this may contribute to the head and face appearing to be dissimilar from one side to the other (craniofacial asymmetry). Additional variations of the skull and facial (craniofacial) region may also be present, such as widely spaced eyes (ocular hypertelorism) with unusually shallow eye cavities (orbits); drooping of the upper eyelids (ptosis); and a state where the eyes do not point in the same direction (strabismus). Some affected individuals may also have a "beaked" nose; deviation of the partition that separates the nostrils (deviated nasal septum); small, low-set ears; and an underdeveloped upper jaw (hypoplastic maxilla). The disorder is also associated with variations of the hands and feet, such as partial fusion of soft tissues (cutaneous syndactyly) of certain fingers and toes (digits); unusually short digits (brachydactyly); and broad great toes. Intelligence is usually normal. SCS is inherited in an autosomal dominant manner.

Saethre Chotzen Syndrome Resources

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