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Clinical features and management issues in Mowat-Wilson syndrome.

Authors
  • Adam, Margaret P
  • Schelley, Susan
  • Gallagher, Renata
  • Brady, April N
  • Barr, Kimberly
  • Blumberg, Bruce
  • Shieh, Joseph T C
  • Graham, John
  • Slavotinek, Anne
  • Martin, Madelena
  • Keppler-Noreuil, Kim
  • Storm, Andrea L
  • Hudgins, Louanne
Type
Published Article
Journal
American Journal of Medical Genetics Part A
Publisher
Wiley (John Wiley & Sons)
Publication Date
Dec 15, 2006
Volume
140
Issue
24
Pages
2730–2741
Identifiers
PMID: 17103451
Source
Medline
License
Unknown

Abstract

Mowat-Wilson syndrome (MWS) is a relatively newly described multiple congenital anomaly/mental retardation syndrome. Haploinsufficiency of a gene termed ZFHX1B (also known as SIP1) on chromosome 2 is responsible for this condition, and clinical genetic testing for MWS recently became available. The majority of reports in the literature originate from Northern Europe and Australia. Here we report our clinical experience with 12 patients diagnosed with MWS within a 2-year period of time in the United States, with particular emphasis on clinical characteristics and management strategies. Individuals with this condition have characteristic facial features, including microcephaly, hypertelorism, medially flared and broad eyebrows, prominent columella, pointed chin, and uplifted earlobes, which typically prompt the clinician to consider the diagnosis. Medical issues in our cohort of patients included seizures (75%) with no predeliction for any particular seizure type; agenesis of the corpus callosum (60% of our patients studied); congenital heart defects (75%), particularly involving the pulmonary arteries and/or valves; hypospadias (55% of males); severely impaired or absent speech (100% of individuals over 1 year of age) with relatively spared receptive language; and Hirschsprung disease (50%) or chronic constipation (25%). The incidence of MWS is unknown, but based on the number of patients identified in a short period of time within the US, it is likely greatly under recognized. MWS should be considered in any individual with severely impaired or absent speech, especially in the presence of seizures and anomalies involving the pulmonary arteries (particularly pulmonary artery sling) or pulmonary valves.

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