raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:368

Glycogen storage disease due to muscle glycogen phosphorylase deficiency

Synonyms: GSD due to muscle glycogen phosphorylase deficiency · GSD type 5 · GSD type V · Glycogen storage disease type 5 · Glycogen storage disease type V · Glycogenosis due to muscle glycogen phosphorylase deficiency · Glycogenosis type 5 · Glycogenosis type V · McArdle disease · Myophosphorylase deficiency

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Adolescent, Adult, Childhood
Status
active

A form of glycogen storage disease (GSD) characterized by exercise intolerance and rhabdomyolysis episodes, due to a deficiency of the muscle isoform of glycogen phosphorylase.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enGlycogen storage disease due to muscle glycogen phosphorylase deficiencyGSD due to muscle glycogen phosphorylase deficiency · GSD type 5 · GSD type V · Glycogen storage disease type 5 · Glycogen storage disease type V · Glycogenosis due to muscle glycogen phosphorylase deficiency · Glycogenosis type 5 · Glycogenosis type V · McArdle disease · Myophosphorylase deficiency
frGlycogénose par déficit en glycogène phosphorylase musculaireDéficit en myophosphorylase · GSD par déficit en glycogène phosphorylase musculaire · GSD type 5 · GSD type V · Glycogénose type 5 · Glycogénose type V · Maladie de McArdle
deGlykogenose Typ 5GSD Typ 5 · GSD Typ V · GSD durch Myophosphorylase-Mangel · Glykogen-Speicherkrankheit Typ 5 · Glykogen-Speicherkrankheit Typ V · Glykogen-Speicherkrankheit durch Myophosphorylase-Mangel · Glykogenose Typ V · Glykogenose durch muskulären Glykogen-Phosphorylase-Mangel · McArdle-Krankheit · Myophosphorylase-Mangel
esEnfermedad por almacenamiento de glucógeno por deficiencia de glucógeno fosforilasa muscularDeficiencia de miofosforilasa · Enfermedad de McArdle · Enfermedad de almacenamiento de glucógeno tipo 5 · Enfermedad de almacenamiento de glucógeno tipo V · GSD por deficiencia de glucógeno fosforilasa muscular · GSD tipo 5 · GSD tipo V · Glucogenosis por deficiencia de glucógeno fosforilasa muscular · Glucogenosis tipo 5 · Glucogenosis tipo V
itMalattia da deposito di glicogeno da deficit di glicogeno fosforilasi muscolareDeficit di miofosforilasi · GSD da deficit di glicogeno fosforilasi muscolare · GSD, tipo 5 · Glicogenosi da deficit di glicogeno fosforilasi muscolare · Glicogenosi, tipo 5 · Malattia da deposito di glicogeno, tipo 5 · Malattia di McArdle
nlGlycogeenstapelingsziekte door deficiëntie van glycogeenfosforylase in spierGSD door deficiëntie van glycogeenfosforylase in spier · GSD type 5 · GSD type V · Glycogeenstapelingsziekte type 5 · Glycogeenstapelingsziekte type V · Glycogenose door deficiëntie van glycogeenfosforylase in spier · Glycogenose type 5 · Glycogenose type V · Myofosforylasedeficiëntie · Ziekte van McArdle
ptDoença de armazenamento de glicogénio devida a deficiência de glicogenofosforilase muscularDeficiência de miofosforilase · Doença de McArdle · Doença de armazenamento de glicogénio tipo 5 · Glicogenose tipo 5
plChoroba spichrzania glikogenu spowodowana niedoborem mięśniowej fosforylazy glikogenuChoroba McArdle'a · Choroba spichrzania glikogenu (GSD) typu 5 · Glikogenoza spowodowana niedoborem mięśniowej fosforylazy glikogenu · Glikogenoza typu 5 · GSD spowodowana niedoborem mięśniowej fosforylazy glikogenu · GSD typu 5 · Niedobór mięśniowej fosforylazy glikogenowej
csPorucha ukládání glykogenu způsobená deficitem svalové glykogenfosforylázyGSD typ 5 · GSD V · Glykogenóza, typ 5 · Glykogenóza, typ V · McArdleho nemoc · Deficit myofosforylázy · GSD způsobená deficitem svalové glykogenfosforylázy · Glykogenóza způsobená deficitem svalové glykogenfosforylázy
ukХвороба накопичення глікогену, зумовлена дефіцитом мязової глікогенфосфорилазиГлікогенова хвороба 5-го типу · Хвороба накопичення глікогену V типу · Глікогеноз внаслідок дефіциту мязової глікогенфосфорилази · Глікогеноз типу 5 · Глікогеноз V типу · GSD внаслідок дефіциту мязової глікогенфосфорилази · GSD тип 5 · GSD тип V · Хвороба МакАрдля · Дефіцит міофосфорилази
zh肌糖原磷酸化酶缺乏所致糖原贮积病肌糖原磷酸化酶缺乏所致糖原贮积病
trKas glikojen fosforilaz eksikliğine bağlı glikojen depo hastalığıGSD tip 5 · GSD tip V · McArdle hastalığı · Glikojenoz tip 5 · Glikojenoz tip V · Miyofosforilaz eksikliği · Glikojen depo hastalığı tip 5 · Glikojen depo hastalığı tip V · Kas glikojen fosforilaz eksikliğine bağlı GSD · Kas glikojen fosforilaz eksikliğine bağlı glikojenoz

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM232600Evalidated
ICD-10E74.0NTBTinclusionvalidated
ICD-115C51.3NTBTindexvalidated
MONDO0009293Evalidated
MeSHD006012Evalidated
UMLSC0017924Evalidated
GARD6528Evalidated
MedDRA10018462Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (2):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
PYGMDisease-causing germline mutation(s) inAssessedHGNC:9726ENSG0000006897660845511q13.1glycogen phosphorylase, muscle associated
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET
Point prevalence1-9 / 1 000 0000.035 / 100 000SpainValue and classValidated29143597[PMID]_ORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

24 annotations · validated 2020-02-05
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003236Elevated circulating creatine kinase concentration
HP:0003546Exercise intolerance
HP:0030231Glycogen accumulation in muscle fiber lysosomes
HP:0030234Highly elevated creatine kinase
HP:0009051Increased muscle glycogen content
Frequent (79-30%)
HP:0040319Dark urine
HP:0003710Exercise-induced muscle cramps
HP:0008305Exercise-induced myoglobinuria
HP:0003652Recurrent myoglobinuria
HP:0003201Rhabdomyolysis
Occasional (29-5%)
HP:0001919Acute kidney injury
HP:0008967Exercise-induced muscle stiffness
HP:0003738Exercise-induced myalgia
HP:0002875Exertional dyspnea
HP:0012378Fatigue
HP:0001639Hypertrophic cardiomyopathy
HP:0001324Muscle weakness
HP:0030973Postexertional malaise
HP:0009073Progressive proximal muscle weakness
HP:0003202Skeletal muscle atrophy
HP:0001649Tachycardia
Very rare (<4-1%)
HP:0012622Chronic kidney disease
HP:0002015Dysphagia
HP:0005216Impaired mastication

Run the differential on the 5 obligate / very frequent terms

Annotation source: 21880526[PMID]_20301518[PMID]_27922496[PMID]_29143597[PMID]

7

Sources for this card