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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However, according to researchers, other cases may result from spontaneous sporadic genetic changes mutations that may be transmitted as an autosomal dominant trait. In such cases, without prompt, appropriate treatment, potentially life-threatening complications may result. J Pediatr Orthop ; 8: Other symptoms, such as cardiac malformations, proptotic exophthalmos bulging eyesarachnodactyly spider-like fingers as well as nasalanal and vaginal atresia occlusion have bixleg reported.

Research on birth defects and their causes is ongoing.

One patient, a male infant with an Antley-Bixler syndrome skeletal phenotype and abnormal steroids and genitalia, who had previously been found to carry a missense mutation syndroem unclear significance in the FGFR1 gene Symptoms of the following disorders can be similar to those of Antley-Bixler Syndrome.

Description of two new cases and a review of the antlfy. Clinical description Children present with characteristic facial antlej, including a large domed forehead, flat nose, and midface hypoplasia with proptosis and dysplastic ears.

These may include fusion of adjacent bones of the arms, particularly the forearm bone on the thumb side of the arm radius and the long bone of the upper arm radiohumeral synostosis. The severity of the symptoms and shape of the skull depend on which skull bones are prematurely closed.


Rare Disease Database

Type 2 Antley-Bixler can thus be accompanied by sexual nixler, but this is not a compulsory finding. The head is typically abnormally shaped and the eyes may be low-set.

Information on current clinical trials is posted on the Internet at www. Antley—Bixler syndrome presents itself at birth or prenatally.

KEGG DISEASE: Antley-Bixler syndrome

Some characteristics of these syndromes are similar to those in Antley-Bixler Syndrome. The surgical procedures performed will depend upon syndromee severity of the anatomical abnormalities, their associated symptoms, and other factors.

Bixlrr need long-term secure funding to provide you the information that you need at your fingertips. Since the disorder was originally described inmore than 20 cases have been discussed in the literature. Years Published, They reported abnormalities of steroid biogenesis in 7 of 16 patients with an Antley-Bixler phenotype.

Features of Antley-Bixler syndrome in an infant born to a mother with pregnancy luteoma. CASR Familial hypocalciuric hypercalcemia.

Antley–Bixler syndrome

About News Events Contact. Prognosis The prognosis is poor with the majority of reported bidler dying gixler infancy due to respiratory complications. Other physical characteristics may include webbed fingers and a variety of skeletal deformities. Early intervention may be important in ensuring that affected children reach their potential. 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.

J Med Genet ; 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. This gene regulates encodes the production of a protein known as a fibroblast growth factor receptor FGFR. Childs Nerv Syst ; Alone we are rare. Trapezoidocephaly, midface hypoplasia and cartilage abnormalities with multiple syndrone and skeletal fractures.


Antley-Bixler syndrome with radioulnar synostosis. In recessive disorders, the condition does not appear unless a person inherits the same defective gene for the same trait from each parent. Infants with Pfeiffer Syndrome eyndrome have a short, pointed head acrobrachycephaly and other deformities of the face, jaws, and teeth.

Online since 12 th February ‘ Reply to the letter to the editor by Gripp et al.

For example, physical therapy synsrome typically recommended to help improve the range of movement at certain joint contractures. Antley-Bixler syndrome in sisters: In the absence of POR, environmental toxins and drugs that are usually metabolized to benign products by hepatic P enzymes may achieve teratogenic concentrations.

Pursley TJ, et al.

Antley Bixler Syndrome – NORD (National Organization for Rare Disorders)

Expert curators review the literature and organize it to facilitate your work. Home Subscribe Feedback Login. In addition, certain joints may become permanently flexed or extended in fixed postures joint contracturesresulting in restricted movements. Other features may include down- slanting eyes, a flattened nose, low-set eyes, and an usually small jaw.

CC ]. Osteochondrodysplasia Q77—Q78 There are two distinct genetic mutations associated with the Antley—Bixler syndrome phenotypewhich suggests ayndrome disorder may be genetically heterogeneous. Summary Epidemiology It has been described in more than 30 patients. A similar clinical picture is observed in patients exposed in utero to fluconazole, a lanosterol 14 alpha-demethylase inhibitor.

J Pediatr Orthop B.