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Lesch-Nyhan syndrome

Lesch-Nyhan syndrome: Introduction

Lesch-Nyhan syndrome: Lesch-Nyhan syndrome (LNS) is a rare inherited disease that disrupts the metabolism of the raw material of genes. (Source: Genes and Disease by the National Center for Biotechnology) ... more about Lesch-Nyhan syndrome.

Lesch-Nyhan syndrome: Inherited biochemical disorder of purine metabolism caused by the virtual absence of an enzyme called hypoxanthine-guanine phosphoribosyltransferase or HPRT. More detailed information about the symptoms, causes, and treatments of Lesch-Nyhan syndrome is available below.

Symptoms of Lesch-Nyhan syndrome

Wrongly Diagnosed with Lesch-Nyhan syndrome?

Lesch-Nyhan syndrome: Related Patient Stories

Diagnostic Tests for Lesch-Nyhan syndrome

Lesch-Nyhan syndrome: Complications

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Causes of Lesch-Nyhan syndrome

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Disease Topics Related To Lesch-Nyhan syndrome

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Evidence Based Medicine Research for Lesch-Nyhan syndrome

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Research about Lesch-Nyhan syndrome

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Clinical Trials for Lesch-Nyhan syndrome

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Statistics for Lesch-Nyhan syndrome

Lesch-Nyhan syndrome: Broader Related Topics

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Article Excerpts about Lesch-Nyhan syndrome

Lesch-Nyhan syndrome (LNS) is a rare inherited disease that disrupts the metabolism of the raw material of genes. (Source: Genes and Disease by the National Center for Biotechnology)

Definitions of Lesch-Nyhan syndrome:

An inborn error of metabolism resulting from a deficiency of hypoxanthine-guanine phosphoribosyltransferase (EC 2.4.2.8) with increased conversion of glycine to uric acid with excessive purine synthesis and hyperuricemia. Patients are normal at birth but begin to show hypertonicity at about 4 months and irritability and other neurological symptoms become apparent during the second year of life, the child becoming gradually more aggressive and self-destructive, banging his head, biting the lower lip and, less commonly, the upper lip, cheeks, fingers, and hands, sometimes using the fingers to mutilate his ears and nose. Associated disorders include spastic cerebral palsy, choreoathetosis, renal uric acid calculi, gouty tophi, and uric acid nodules. Mental retardation is common but normal intelligence occurs in some cases. - (Source - Diseases Database)

Lesch-Nyhan syndrome is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Lesch-Nyhan syndrome, or a subtype of Lesch-Nyhan syndrome, affects less than 200,000 people in the US population.
Source - National Institutes of Health (NIH)

Ophanet, a consortium of European partners, currently defines a condition rare when it affects 1 person per 2,000. They list Lesch-Nyhan syndrome as a "rare disease".
Source - Orphanet

 

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