Expressivity of Holt-Oram Syndrome Is Not Predicted by TBX5 Genotype
نویسندگان
چکیده
منابع مشابه
Novel TBX5 mutations and molecular mechanism for Holt-Oram syndrome.
The Holt-Oram syndrome (OMIM 142900) is an autosomal dominant disorder with clinical features characterised by a variety of skeletal malformations and congenital heart defects. The gene for Holt-Oram syndrome has been identified as TBX5 on chromosome 12q24. TBX5 encodes a protein of 518 amino acids that belongs to the family of the T box transcriptional factors, 11 and is expressed in embryonic...
متن کاملHolt-Oram syndrome.
A29-year-old woman presented with dizziness. Physical and radiographic examinations showed skeletal hand malformations, ie, digitalized triphalangeal thumbs and dystrophy of the carpal bones. When she was 15 years old, an atrial septal defect had been repaired. ECG recordings showed abnormalities of atrial excitation such as a wandering pacemaker, atrial ectopic activity, AV-nodal block, and si...
متن کاملThe Holt-Oram syndrome.
The classical description of this syndrome of upper limb abnormalities and congenital heart lesions was by Holt and Oram in 1960.1 They were from King's College Hospital in London and reported a four generation family with nine affected subjects. Many other families were then recognised to have the same condition, which led to a series of reports in the early 1960s. The names atriodigital dyspl...
متن کاملDifferent TBX5 interactions in heart and limb defined by Holt-Oram syndrome mutations.
To better understand the role of TBX5, a T-box containing transcription factor in forelimb and heart development, we have studied the clinical features of Holt-Oram syndrome caused by 10 different TBX5 mutations. Defects predicted to create null alleles caused substantial abnormalities both in limb and heart. In contrast, missense mutations produced distinct phenotypes: Gly80Arg caused signific...
متن کاملHolt-Oram syndrome.
Holt-Oram syndrome (HOS) is a rare disorder characterized by congenital anomalies of the upper limbs and heart. Cardiac arrhythmias are common in patients with HOS. We successfully managed a 24-yr-old woman with HOS who underwent laparoscopic ovarian cystectomy. Potential problems in the anaesthetic management of patients with HOS are discussed.
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ژورنال
عنوان ژورنال: The American Journal of Human Genetics
سال: 2003
ISSN: 0002-9297
DOI: 10.1086/376436