" /> Glycogen storage disease V - CISMeF





Preferred Label : Glycogen storage disease V;

Symbol : GSD5;

CISMeF acronym : GSD V; GSD5;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Myophosphorylase deficiency; Mcardle disease; Pygm deficiency; Gsd V; Muscle glycogen phosphorylase deficiency;

Description : McArdle disease is an autosomal recessive metabolic disorder characterized by onset of exercise intolerance and muscle cramps in childhood or adolescence. Transient myoglobinuria may occur after exercise, due to rhabdomyolysis. Severe myoglobinuria may lead to acute renal failure. Patients may report muscle weakness, myalgia, and lack of endurance since childhood or adolescence. Later in adult life, there is persistent and progressive muscle weakness and atrophy with fatty replacement. McArdle disease is a relatively benign disorder, except for possible renal failure as a complication of myoglobinuria (summary by Chen, 2001).;

Inheritance : Autosomal recessive;

Molecular basis : Caused by mutation in the muscle glycogen phosphorylase gene (PYGM, 608455.0001);

Laboratory abnormalities : Muscle glycogen phosphorylase deficiency; Increased creatine kinase; Increased ammonia with exercise; Increased uric acid with exercise;

Prefixed ID : #232600;

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29/04/2025


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