raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:171617

Autosomal dominant spastic paraplegia type 38

Synonyms: SPG38

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Childhood
Status
active

A complex hereditary spastic paraplegia characterized by mild to severe lower limb spasticity, hyperreflexia, extensor plantar responses, impaired vibration sensation, <i>pes cavus</i>, and significant wasting and weakness of the small hand muscles. Temporal lobe epilepsy and cognitive dysfunction have been also reported.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAutosomal dominant spastic paraplegia type 38SPG38
frParaplégie spastique autosomique dominante type 38= en
deSpastische Paraplegie, autosomal-dominante, Typ 38= en
esParaplejía espástica autosómica dominante tipo 38
itParaplegia spastica autosomica dominante tipo 38= en
nlAutosomaal dominante spastische paraplegie type 38= en
ptParaplegia espástica autossómica dominante tipo 38= en
plAutosomalna dominująca paraplegia spastyczna typu 38= en
csAutozomálně dominantní spastická paraplegie, typ 38= en
ukАутосомно-домінантна спастична параплегія, тип 38= en
zh常染色体显性遗传痉挛性截瘫38型= en
trOtozomal dominant spastik parapleji tip 38= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM612335Evalidated
ICD-10G11.4NTBTattributedvalidated
ICD-118B44.00NTBTindexvalidated
MONDO0012867Evalidated
MeSHC567349Evalidated
UMLSC2676732Evalidated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SPG38Disease-causing germline mutation(s) inAssessedHGNC:334854p16-p15spastic paraplegia 38 (autosomal dominant, Silver syndrome)
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families1 familiesWorldwideFamily(ies)Validated18401025[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_18401025[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

25 annotations · validated 2018-04-25
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003487Babinski sign
HP:0002314Degeneration of the lateral corticospinal tracts
HP:0001347Hyperreflexia
HP:0002061Lower limb spasticity
HP:0001761Pes cavus
HP:0007020Progressive spastic paraplegia
HP:0002064Spastic gait
HP:0003393Thenar muscle atrophy
Frequent (79-30%)
HP:0009031Amyotrophy of ankle musculature
HP:0009053Distal lower limb muscle weakness
HP:0003457EMG abnormality
HP:0003426First dorsal interossei muscle atrophy
HP:0003392First dorsal interossei muscle weakness
HP:0100561Spinal cord lesion
HP:0003427Thenar muscle weakness
Occasional (29-5%)
HP:0100543Cognitive impairment
HP:0009027Foot dorsiflexor weakness
HP:0006892Frontotemporal cerebral atrophy
HP:0002166Impaired vibration sensation in the lower limbs
Excluded (0%)
HP:0012898Abnormal lower-limb motor evoked potentials
HP:0002921Abnormality of the cerebrospinal fluid
HP:0000726Dementia
HP:0009049Peroneal muscle atrophy
HP:0001250Seizure
HP:0000020Urinary incontinence

Run the differential on the 8 obligate / very frequent terms

Annotation source: 18401025[PMID]

7

Sources for this card