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Rubinstein–Taybi syndrome : ウィキペディア英語版
Rubinstein–Taybi syndrome

Rubinstein–Taybi syndrome (RTS), also known as broad thumb-hallux syndrome or Rubinstein syndrome, is a condition characterized by short stature, moderate to severe learning difficulties, distinctive facial features, and broad thumbs and first toes. Other features of the disorder vary among affected individuals. People with this condition have an increased risk of developing noncancerous and cancerous tumors, leukemia, and lymphoma. This condition is sometimes inherited as an autosomal dominant pattern and is uncommon, many times it occurs as a de novo (not inherited) occurrence, it occurs in an estimated 1 in 125,000-300,000 births.
==Features of Rubinstein–Taybi syndrome==

A case was described in 1957 by Michail, Matsoukas and Theodorou. In 1963, Jack Herbert Rubinstein (1925–2006) and Hooshang Taybi (1919–2006) described a larger series of cases.
Typical features of the disorder include:
* Broad thumbs and broad first toes
* Mental disability
* Small height, bone growth, small head
* Cryptorchidism in males
* Unusual faces involving the eyes, nose, and palate
* Anesthesia may be dangerous in these patients: “According to the medical literature, in some cases, individuals with Rubinstein–Taybi syndrome may have complications (e.g., respiratory distress and/or irregular heart beats (arrythmias )) associated with a certain muscle relaxant (succinlycholine) and certain anesthesia. Any situations requiring the administration of anesthesia or succinlycholine (e.g., surgical procedures) should be closely monitored by skilled professionals (anesthesiologists or Certified Registered Nurse Anesthetists, CRNA's).”〔http://www.rubinstein-taybi.org/anesthesia.html〕 Primary literature suggests the children may have a higher rate of cardiac physical and conduction abnormalities which may cause unexpected results with cardioactive medications. A further editorial reply in the British Journal of Anaesthesia discusses changes in the face and airway structure making it more difficult to secure the airway under anaesthesia, however, complications appeared in a minority of cases, and routine methods of airway control in the operating room appears to be successful. They recommended close individual evaluation of Rubinstein–Taybi patients for anaesthetic plans.
A 2009 study found that children with RTS were more likely to be overweight and to have a short attention span, motor stereotypies, and poor coordination, and hypothesized that the identified CREBBP gene impaired motor skills learning. Other research has shown a link with long-term memory (LTM) deficit. See also Epigenetics in learning and memory.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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