raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:98895

Becker muscular dystrophy

Synonyms: BMD · Becker dystrophinopathy

Type
Disease
Group
Disorder
Inheritance
X-linked recessive
Age of onset
Adolescent, Adult, Childhood, Elderly
Status
active

A rare, genetic muscular dystrophy characterized by progressive muscle wasting and weakness due to degeneration of skeletal, smooth and cardiac muscle.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enBecker muscular dystrophyBMD · Becker dystrophinopathy
frDystrophie musculaire de BeckerBMD · DMB · Dystrophinopathie de Becker
deMuskeldystrophie Typ BeckerDystrophinopathie vom Typ Becker
esDistrofia muscular de BeckerDistrofinopatía de Becker
itDistrofia muscolare di BeckerDistrofinopatia di Becker
nlSpierdystrofie van BeckerBMD · Dystrofinopathie, Becker-type
ptDistrofia muscular, tipo Becker
plDystrofia mięśniowa BeckeraBMD · Dystrofinopatia Beckera
csBeckerova svalová dystrofieBMD · Beckerova dystrofinopatie
ukМязова дистрофія БеккераДистрофінопатія Беккера · BMD
zh贝克肌营养不良症贝克肌营养不良
trBecker kas distrofisiBMD · Becker distrofinopatisi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM159050BTNTvalidated
OMIM300376Evalidated
ICD-10G71.0NTBTinclusionvalidated
ICD-118C70.0Especificvalidated
MONDO0010311Evalidated
UMLSC0917713Evalidated
GARD5900Evalidated
MedDRA10059117Evalidated

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
DMDDisease-causing germline mutation(s) inAssessedHGNC:2928ENSG00000198947300377Xp21.2-p21.1dystrophin
5

Prevalence and incidence

13 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 100 0002 / 100 000EuropeValue and classValidatedEuropean Medicines Agency 2018[OTHER]
Prevalence at birth1-9 / 100 0002.7 / 100 000United KingdomValue and classValidated1673177[PMID]
Point prevalence1-9 / 100 0003.64 / 100 000United KingdomValue and classValidated19767415[PMID]_24780148[PMID]_ORPHANET
Prevalence at birth1-9 / 100 0002.5 / 100 000United StatesValue and classValidated12495984[PMID]
Point prevalence1-9 / 100 0002.4 / 100 000United StatesValue and classNot yet validatedemedicine[OTHER]
Prevalence at birth1-9 / 100 0002.2 / 100 000EuropeValue and classValidated[EXPERT]
Point prevalence1-9 / 100 0001.42 / 100 000Puerto ricoValue and classValidatedDOI:10.3233/JND-160147[OTHER]
Point prevalence1-9 / 100 0001.53 / 100 000WorldwideValue and classNot yet validated24780148[PMID]
Point prevalence1-9 / 100 0002.47 / 100 000ItalyValue and classValidated10466417[PMID]_24780148[PMID]
Point prevalence1-9 / 100 0003.94 / 100 000EgyptValue and classValidated16210862[PMID]_24780148[PMID]
Point prevalence1-9 / 1 000 0000.91 / 100 000JapanValue and classValidated1745328[PMID]_24780148[PMID]_ORPHANET
Point prevalence<1 / 1 000 0000.07 / 100 000South AfricaValue and classValidated7825085[PMID]_24780148[PMID]_ORPHANET
Point prevalence1-9 / 100 0001.59 / 100 000IrelandValue and classValidated8845721[PMID]_24780148[PMID]

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

16 annotations · validated 2017-03-21
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0012086Abnormal urinary color
HP:0003551Difficulty climbing stairs
HP:0003236Elevated circulating creatine kinase concentration
HP:0003546Exercise intolerance
HP:0001288Gait disturbance
HP:0003326Myalgia
HP:0002913Myoglobinuria
Frequent (79-30%)
HP:0002814Abnormality of the lower limb
HP:0002910Elevated circulating hepatic transaminase concentration
HP:0002527Falls
HP:0012378Fatigue
HP:0003394Muscle spasm
HP:0001324Muscle weakness
Occasional (29-5%)
HP:0001763Pes planus
HP:0003202Skeletal muscle atrophy
HP:0030051Tip-toe gait

Run the differential on the 7 obligate / very frequent terms

Annotation source: 19396825[PMID]_23667215[PMID]

7

Sources for this card