Antley Bixler Syndrome

National Organization for Rare Disorders, Inc.

It is possible that the main title of the report Antley Bixler Syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.


  • Craniosynostosis, Choanal Atresia, Radial Humeral Synostosis
  • Trapezoidocephaly-Multiple Synostosis Syndrome
  • ABS
  • Multisynostotic Osteodysgenesis with Long Bone Fractures

Disorder Subdivisions

  • None

General Discussion

Antley-Bixler Syndrome is a rare genetic disorder that is primarily characterized by distinctive malformations of the head and facial (craniofacial) area and additional skeletal abnormalities. For example, the disorder is typically associated with premature closure of the fibrous joints (cranial sutures) between particular bones of the skull (craniosynostosis). Many affected infants and children also may have a prominent forehead, underdeveloped midfacial regions (midfacial hypoplasia), protruding eyes (proptosis), and other craniofacial abnormalities. Additional skeletal malformations are usually present, such as fusion of certain adjacent bones of the arms (e.g., radiohumeral or radioulnar synostosis), long, thin fingers and toes (arachnodactyly), and bowing of the thigh bones. In addition, certain joints may become permanently flexed or extended in fixed postures (joint contractures), resulting in restricted movements.

Antley-Bixler Syndrome often appears to be inherited as an autosomal recessive trait. However, according to researchers, other cases may result from spontaneous (sporadic) genetic changes (mutations) that may be transmitted as an autosomal dominant trait.


Children's Craniofacial Association
13140 Coit Road
Suite 517
Dallas, TX 75240
Tel: (214)570-9099
Fax: (214)570-8811
Tel: (800)535-3643

March of Dimes Birth Defects Foundation
1275 Mamaroneck Avenue
White Plains, NY 10605
Tel: (914)997-4488
Fax: (914)997-4763

FACES: The National Craniofacial Association
PO Box 11082
Chattanooga, TN 37401
Tel: (423)266-1632
Fax: (423)267-3124
Tel: (800)332-2373

NIH/National Institute of Child Health and Human Development
31 Center Dr
Building 31, Room 2A32
Bethesda, MD 20892
Fax: (866)760-5947
Tel: (800)370-2943
TDD: (888)320-6942

Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
Tel: (301)251-4925
Fax: (301)251-4911
Tel: (888)205-2311
TDD: (888)205-3223

Cleft Lip and Palate Foundation of Smiles
2044 Michael Ave SW
Wyoming, MI 49509
Tel: (616)329-1335

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to and click on Rare Disease Database under "Rare Disease Information".

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.

It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report

This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site or email

Last Updated:  9/17/2007
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