Antley-Bixler syndrome

Antley-Bixler syndrome (ABS), also known as trapezoidocephaly-synostosis syndrome, is a rare autosomal dominant or recessive condition characterized by craniosynostosis and extra-cranial synostoses. Mid-facial hypoplasia is also common.

It is a very rare condition with only 50 cases described in the global literature up to 2006 3

Mutations in two separate genes FGFR2 and POR have been found to produce the Antley-Bixler syndrome phenotype.

FGFR2 is inherited in an autosomal dominant manner and POR is in an autosomal recessive manner.

Neonatal mortality is up to 80%, with usual cause of death respiratory compromise. However as the child ages, prognosis improves.

First case was described by R Antley and D Bixler in 1975 3.

Share article

Article information

rID: 60013
Section: Syndromes
Synonyms or Alternate Spellings:
  • Trapezoidocephaly-synostosis syndrome

Support Radiopaedia and see fewer ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.