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Brain Dev. 2011 Aug;33(7):576-9. doi: 10.1016/j.braindev.2010.10.006. Epub 2010 Nov 18.

A familial case of LEOPARD syndrome associated with a high-functioning autism spectrum disorder.

Author information

  • 1Department of Pediatrics and Child Health, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Japan. york@med.kurume-u.ac.jp


A connection between LEOPARD syndrome (a rare autosomal dominant disorder) and autism spectrum disorders (ASDs) may exist. Of four related individuals (father and three sons) with LEOPARD syndrome, all patients exhibited clinical symptoms consistent with ASDs. Findings included aggressive behavior and impairment of social interaction, communication, and range of interests. The coexistence of LEOPARD syndrome and ASDs in the related individuals may be an incidental familial event or indicative that ASDs is associated with LEOPARD syndrome. There have been no other independent reports of the association of LEOPARD syndrome and ASDs. Molecular and biochemical mechanisms that may suggest a connection between LEOPARD syndrome and ASDs are discussed.

Copyright © 2010 The Japanese Society of Child Neurology. Published by Elsevier B.V. All rights reserved.

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