raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:139547

Distal spinal muscular atrophy type 3

Synonyms: Autosomal recessive distal spinal muscular atrophy type 3 · Distal hereditary motor neuropathy type 3 and type 4 · dHMN3 and dHMN4 · dSMA3

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

Distal spinal muscular atrophy type 3 is a rare neuromuscular disease characterized by progressive muscular weakness and atrophy predominantly affecting distal parts of limbs, later involvement of proximal and trunk muscles with marked hyperlordosis and late diaphragmatic dysfunction.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enDistal spinal muscular atrophy type 3Autosomal recessive distal spinal muscular atrophy type 3 · Distal hereditary motor neuropathy type 3 and type 4 · dHMN3 and dHMN4 · dSMA3
frAmyotrophie spinale distale type 3Amyotrophie spinale distale autosomique récessive type 3 · Atrophie musculaire spinale distale autosomique récessive type 3 · Neuropathie motrice distale héréditaire types 3 et 4 · dHMN3 et dHMN4 · dSMA3
deSpinale Muskelatrophie, distale, Typ 3Autosomal-rezessive distale spinale Muskelatrophie Typ 3 · Muskelatrophie, distale spinale, Typ 3 · Neuropathie, distale hereditäre motorische, Typ 3 und Typ 4 · dHMN3 und dHMN4 · dSMA3
esAtrofia muscular espinal distal tipo 3Atrofia muscular espinal distal autosómica recesiva tipo 3 · Neuropatía motora hereditaria distal tipo 3 y tipo 4 · dHMN3 y dHMN4 · dSMA3
itAtrofia muscolare spinale distale, tipo 3Atrofia muscolare spinale distale, autosomica recessiva, tipo 3 · Neuropatia motoria ereditaria distale, tipi 3 e 4 · dHMN3 e dHMN4 · dSMA3
nlDistale spinale spieratrofie type 3dSMA3 · Autosomaal recessieve distale spinale musculaire atrofie type 3 · Autosomaal recessieve distale spinale spieratrofie type 3 · Distale erfelijke motorische neuropathie type 3 en type 4 · Distale spinale musculaire atrofie type 3 · dHMN3 en dHMN4
ptAtrofia muscular espinhal distal tipo 3Neuropatia motora distal hereditária tipo 3 e tipo 4
plDystalny rdzeniowy zanik mięśni typu 3Autosomalny recesywny dystalny rdzeniowy zanik mięśni typu 3 · dHMN3 and dHMN4 · dSMA3 · Dystalna dziedziczna neuropatia ruchowa typu 3 i typu 4
csDistální spinální svalová atrofie, typ 3Distální hereditární motorická neuropatie, typy 3 a 4 · dHMN3 a dHMN4 · dSMA3 · Autozomálně recesivní distální spinální svalová atrofie, typ 3
ukДистальна спінальна мязова атрофія, тип 3Аутосомно-рецесивна дистальна спінальна мязова атрофія, тип 3 · dHMN3 та dHMN4 · Дистальна спадкова моторна нейропатія типу 3 і 4 · dSMA3
zh远端脊髓性肌萎缩症3型常染色体隐性遗传远端脊髓性肌萎缩症3型
trDistal spinal müsküler atrofi tip 3dSMA3 · dHMN3 ve dHMN4 · Distal kalıtsal motor nöropati tip 3 ve tip 4 · Otozomal çekinik distal spinal kas atrofisi tip 3

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM607088Evalidated
ICD-10G12.2NTBTattributedvalidated
ICD-118B61.4NTBTindexvalidated
MONDO0011771Evalidated
MeSHC564626Evalidated
UMLSC1846823Evalidated

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 (1):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families28 casesWorldwideCase(s)Validated512678[PMID]_12112104[PMID]_15054395[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_512678[PMID]_12112104[PMID]_15054395[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

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card