A number sign (#) is used with this entry because of evidence that Antley-Bixler syndrome with disordered steroidogenesis (ABS1) is caused by homozygous or. Antley–Bixler syndrome, also called trapezoidocephaly-synostosis syndrome, is a rare, very severe autosomal recessive congenital disorder characterized by. This page from Great Ormond Street Hospital (GOSH) explains the causes, symptoms and treatment of Antley-Bixler syndrome and where to get help.

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A diverse range of malformations cardiac, anal or vertebral are often associated.

We need long-term secure funding to provide you the information that you need at your fingertips. Additional craniofacial abnormalities may include a large, prominent forehead frontal bossing, underdeveloped middle regions of the face midfacial hypoplasia ; a large nose with a low nasal bridge; protruding eyes proptosis ; and low-set, malformed dysplastic ears. Please consider making a donation now and again in the future.

Antley–Bixler syndrome – Wikipedia

Patients with POR mutations may be at risk for adrenal insufficiency and Addisonian crisis, especially at times of severe febrile illness bixlrr major surgery. Acrocephalosyndactyly Syndromes are rare disorders of infancy congenital that are characterized by a pointed head caused by the premature closure of the cranial sutures of the skull.

The documents contained in this web site are presented for information purposes only. Symptoms of the following disorders can be similar to those of Antley-Bixler Syndrome.

Carpenter Syndrome is a form bixker craniosynostosis, marked by the premature closure of the bones of the skull resulting in an abnormally shaped head. Standard Therapies Treatment The treatment of Antley-Bixler Syndrome is directed toward the specific symptoms that are apparent in each individual.


The 34 affected POR alleles included 10 with alato-pro Some characteristics of these syndromes are similar to those in Antley-Bixler Syndrome. Eleven pairs of ribs instead of the usual twelve may also be present. How to cite this article: Trapezoidocephaly, midface hypoplasia and cartilage abnormalities with multiple synostoses and skeletal fractures.

Pfeiffer Syndrome is a rare disorder nixler as an autosomal dominant genetic trait that primarily affects the bones. If an individual receives one normal gene and one gene for the disease, the person will be a carrier for the disease but usually will not show symptoms. Fifty percent of their children risk being carriers of the disease but generally will not show symptoms of bixxler disorder.

Syndrone ICD – Eur J Pediatr ; Type 2 Antley-Bixler can thus be accompanied by sexual ambiguity, but this is not a compulsory finding.

Rare Disease Database

Description of two new cases and review of the literature. They carry the genetic characteristics of each individual. Bottero L, et al. Specialised Social Services Eurordis directory. Chromosomes are found in the nucleus of all body somatic cells.

FZD4 Familial exudative vitreoretinopathy 1. Specialized testing, such as certain advanced imaging techniques, may also be conducted to detect certain findings that may be associated with the disorder. For example, in those with choanal atresia or stenosis, surgery or other appropriate methods may be required to decrease the airway obstruction or correct the malformation.

Antley-Bixler Syndrome is typically characterized by distinctive malformations of the head and facial craniofacial area. Association of multiple developmental defects and embryonic lethality with loss of microsomal NADPH-cytochrome P oxidoreductase. Primary Craniosynostosis is a rare disorder of the skull that may be inherited as an autosomal dominant or autosomal recessive genetic trait. By contrast, milder mutations in POR may manifest as mild disorders of steroid synthesis.


It is characterized by short stature with bowing and an angular shape of the long bones of the legs. Rumball KM, et al.

Orphanet: Antley Bixler syndrome

USA Source of Support: Escobar LF, et al. Antich J, et syndrone. In 15 patients, POR mutations were found on both alleles; in 4, mutations were found on only 1 allele; 6 carried FGFR2 mutations; and 4 patients carried no mutations. Human traits, including the classic genetic diseases, are the product of the interaction of two genes, one received from the father and one from the mother.

Osteochondroma osteochondromatosis Hereditary multiple exostoses. In the absence of POR, environmental toxins and drugs that are usually metabolized to benign products by hepatic P enzymes may achieve teratogenic concentrations. Other physical characteristics may include webbed fingers and a variety of skeletal deformities. Infobox medical condition new Articles syndtome be expanded from July All articles to be expanded Articles with empty sections from July All articles with empty sections Articles using small message boxes.

Click on image for details. Inborn Errors of Development.

CC ]. Antley—Bixler syndrome is named after Drs.

Comparisons may be useful for a differential diagnosis: