BACKGROUND Holt-Oram syndrome (HOS) is a rare but significant syndrome consisting of structural heart defects, conduction abnormalities, and upper extremity anomalies. It was first described in the British Heart Journal in 1960 by Mary Holt and Samuel Oram as a report of atrial septal defect, conduction disturbances, and hand malformations occurring in family members. Patients can present with ...

We report on a Saudi infant with Holt-Oram syndrome caused by a de novo missense mutation of the TBX5 gene. The mutation (Thr72Lys) is novel and has not been previously reported. The cardiac and limb defects in our patient were both severe, and the infant also had micrognathia and cleft palate. Previously reported cases of the Holt-Oram syndrome caused by missense mutations were reviewed and th...

holt-oram syndrome (hos) is a developmental disorder inherited in an autosomal-dominant pattern. affected organs are the heart and forelimbs with upper extremity skeletal defects and congenital heart malformation. in this study we present three cases of hos in the same family. in one of these three individuals we detected a transition of c to t (ctg-gtt, v205v) in exon 7 of the tbx5 gene. this ...

We have recently shown that Okihiro syndrome results from mutation in the putative zinc finger transcription factor gene SALL4 on chromosome 20q13.13-13.2. There is considerable overlap of clinical features of Okihiro syndrome with other conditions, most notably Holt-Oram syndrome, a condition in part resulting from mutation of the TBX5 locus, as well as acro-renal-ocular syndrome. We analysed ...

Holt Oram Syndrome (HOS) falls in rare prevalence category with probability of 0.7 100,000 live births. It is a autosomal dominant multiple malformation syndrome characterized by abnormalities affecting hands, wrists, arms,congenital heart defects and/or conduction problems. Genetic mutations observed TBX5 gene attributed as the main cause HOS. Our patient his late 40s was diagnosed Syndrome. H...

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...

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...

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.

holt-oram syndrome is an autosomal dominant disorder, characterised by skeletal abnormalities of the upper limb associated with congenital heart defect, mainly atrial and ventricular septal defects. skeletal defects exclusively affect the upper limbs in the preaxial radial ray distribution and are bilateral and asymmetrical. they range from clinodactyly, absent or digitalised thumb, hypoplastic...