Articles Tagged ‘Autosomal recessive disorders’

Treatment of ZAP70 deficiency

No cure currently exists; however, gene therapy has been proposed.[3][4]

Presentation of ZAP70 deficiency

It is characterized by a lack of CD8+ T cells and the presence of circulating CD4+ T cells which are unresponsive to T-cell receptor (TCR)-mediated stimuli.[2]

ZAP70 deficiency

ZAP70 deficiency (zeta-chain-associated protein 70 kD deficiency) is a rare, autosomal recessive form of severe combined immunodeficiency (SCID).[1]

Treatment of Xeroderma pigmentosum

The most important part of managing the condition is reducing exposure to the sun. The number of keratoses can be reduced with Isotretinoin ([1]) (though there are significant side-effects.) Existing keratoses can be treated using cryotherapy or fluorouracil.

Woodhouse-Sakati syndrome

Woodhouse-Sakati syndrome is a rare autosomal recessive[1] genetic disorder which causes malformations and deficiencies affecting the endocrine system.[2]

Eponym of Wolman disease

Wolman disease is named after Moshe Wolman.[4]

Prognosis of Wolman disease

In the past, there has been no specific treatment for Wolman disease, although a single case patient has seen a complete, sustained remission after a bone marrow transplant, and if the results can be duplicated, this approach may become standard in the future.[1]

Patients with anemia may require blood transfusions. In some patients, the enlarged spleen must be removed to improve cardiopulmonary function. Dietary restrictions do not prevent lipid buildup in cells and tissues. There is no treatment for the disease, and almost all infants die before the age of one.

Symptoms of Wolman disease

Infants may be normal and active at birth but quickly develop progressive mental deterioration, hepatosplenomegaly (enlarged liver and grossly enlarged spleen), intrabdominal adenopathy, distended abdomen, gastrointestinal problems including steatorrhea (excessive amounts of fats in the stools), jaundice, anemia, vomiting and calcium deposits in the adrenal glands. The overall clinical picture is an infant who appears ill and fails to thrive.

The key imaging findings are enlarged adrenal glands, with punctate calcifications, and a preserved shape. The calcification may be limited to the cortex of the gland. This may be a pathognomonic sign. The liver and spleen are enlarged, especially the liver. The liver demonstrates low density on CT, due to fatty infiltration. There may be enlarged, low-density mesenteric and retroperitoneal lymph nodes.

Inheritance and Diagnosis of Wolman disease

Wolman disease is marked by accumulation of cholesteryl esters (normally a transport form of cholesterol) and triglycerides (a chemical form in which fats exist in the body) that can build up significantly and cause damage in the cells and tissues.

Wolman disease

Wolman disease (also known as Wolman’s disease, Wolman’s syndrome, and acid lipase deficiency)[1] is a rare autosomal recessive[2] lipid storage disease that is usually fatal at a very young age.[3]


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