Glycogen storage disease due to muscle or heart glycogen synthase deficiency - CISMeF
Glycogen storage disease due to muscle or heart glycogen synthase deficiencyICD-11 More detail
Preferred Label : Glycogen storage disease due to muscle or heart glycogen synthase deficiency;
ICD-11 definition : This syndrome is characterised by muscle and heart glycogen deficiency. It has been
described in three siblings (two brothers and their younger sister). The older brother
died at 10.5 years of age as a result of sudden cardiac arrest and the younger brother
presented with hypertrophic cardiomyopathy, abnormal heart rate and blood pressure
during exercise, and muscle fatigability. The sister showed no symptoms but a lack
of glycogen was identified through muscle biopsy. The syndrome is caused by homozygous
missense mutations in the gene encoding muscle glycogen synthase.;
ICD-11 synonym : Glycogen storage disease type 0B; GSD type 0B; Cardiomyopathy-exercise intolerance due to muscle and heart glycogen deficiency; Glycogenosis type 0B;
This syndrome is characterised by muscle and heart glycogen deficiency. It has been
described in three siblings (two brothers and their younger sister). The older brother
died at 10.5 years of age as a result of sudden cardiac arrest and the younger brother
presented with hypertrophic cardiomyopathy, abnormal heart rate and blood pressure
during exercise, and muscle fatigability. The sister showed no symptoms but a lack
of glycogen was identified through muscle biopsy. The syndrome is caused by homozygous
missense mutations in the gene encoding muscle glycogen synthase.