raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:464282

Spastic paraplegia-severe developmental delay-epilepsy syndrome

Synonyms: SPPRS syndrome · Spastic paraplegia-psychomotor retardation-seizures syndrome

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Infancy
Status
active

Spastic paraplegia-severe developmental delay-epilepsy syndrome is a rare, genetic, complex spastic paraplegia disorder characterized by an infantile-onset of psychomotor developmental delay with severe intellectual disability and poor speech acquisition, associated with seizures (mostly myoclonic), muscular hypotonia which may be noted at birth, and slowly progressive spasticity in the lower limbs leading to severe gait disturbances. Ocular abnormalities and incontinence are commonly associated. Other symptoms may include verbal dyspraxia, hypogenitalism, macrocephaly and sensorineural hearing loss, as well as dystonic movements and ataxia with upper limb involvement.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSpastic paraplegia-severe developmental delay-epilepsy syndromeSPPRS syndrome · Spastic paraplegia-psychomotor retardation-seizures syndrome
frSyndrome de paraplégie spastique-retard de développement sévère-épilepsieSyndrome de paraplégie spastique-retard psychomoteur-épilepsie
deSpastische Paraplegie-schwere Entwicklungsverzögerungen-Epilepsie-SyndromSPPRS-Syndrom · Spastische Paraplegie-psychomotorische Retardierung-Krämpfe-Syndrom
esSíndrome de paraplejía espástica-retraso grave del desarrollo-epilepsiaSíndrome SPPRS
itSindrome da paraplegia spastica, grave ritardo dello sviluppo ed epilessia
nlSpastische paraplegie - ernstige ontwikkelingsachterstand - epilepsie-syndroomSPPRS-syndroom · Spastische paraplegie - psychomotorische retardatie - insulten-syndroom
ptSíndrome de paraplegia espástica-atraso psicomotor grave-epilepsia
plZespół paraplegii spastycznej, ciężkiego opóźnienia w rozwoju i padaczkiZespół SPPRS · Zespół paraplegii spastycznej, opóźnienia psychoruchowego i napadów padaczkowych
csSyndrom zahrnující spastickou paraplegii, těžké vývojové opoždění a epilepsiiSPPRS syndrome · Spastic paraplegia-psychomotor retardation-seizures syndrome · SPPRS syndrom · Syndrom zahrnující spastickou paraplegii, psychomotorickou retardaci a záchvaty
ukСиндром спастичної параплегії-тяжкої затримки розвитку-епілепсіїСиндром спастичної параплегії-психомоторної загальмованості-судомних нападів · Синдром SPPRS
zh痉挛性截瘫-严重发育迟缓-癫痫综合征痉挛性截瘫-精神运动迟缓-癫痫综合征
trSpastik parapleji-ağır gelişme geriliği-epilepsi sendromuSPPRS sendromu · Spastik parapleji-psikomotor retardasyon-nöbet sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM616756Evalidated
ICD-10Q87.8NTBTattributedvalidated
MONDO0014764Evalidated
UMLSC5568869Evalidated

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

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (4):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
HACE1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:21033ENSG000000853826108766q16.3HECT domain and ankyrin repeat containing E3 ubiquitin protein ligase 126424145[PMID]_26437029[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families16 casesWorldwideCase(s)Validated26424145[PMID]_26437029[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_26424145[PMID]_26437029[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.

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HPO phenotypes

40 annotations · validated 2018-10-24
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001263Global developmental delayDiagnostic criterion
HP:0007020Progressive spastic paraplegiaDiagnostic criterion
HP:0001250SeizureDiagnostic criterion
Frequent (79-30%)
HP:0031087Absent pubertal growth spurt
HP:0001251Ataxia
HP:0008936Axial hypotonia
HP:0000490Deeply set eye
HP:0000750Delayed speech and language development
HP:0002714Downturned corners of mouth
HP:0001260Dysarthria
HP:0001332Dystonia
HP:0025313Exophoria
HP:0001288Gait disturbance
HP:0002123Generalized myoclonic seizure
HP:0002827Hip dislocation
HP:0000316Hypertelorism
HP:0001249Intellectual disability
HP:0002808Kyphosis
HP:0002061Lower limb spasticity
HP:0000545Myopia
HP:0000556Retinal dystrophy
HP:0002650Scoliosis
HP:0000407Sensorineural hearing impairment
HP:0001257Spasticity
HP:0002317Unsteady gait
HP:0002515Waddling gait
Occasional (29-5%)
HP:0002069Bilateral tonic-clonic seizure
HP:0002059Cerebral atrophy
HP:0012762Cerebral white matter atrophy
HP:0011401Delayed peripheral myelination
HP:0011166Focal myoclonic seizure
HP:0002079Hypoplasia of the corpus callosum
HP:0000252Microcephaly
HP:0001513Obesity
HP:0008373Puberty and gonadal disorders
HP:0004322Short stature
HP:0010219Structural foot deformity
HP:0000020Urinary incontinence
Excluded (0%)
HP:0001437Abnormality of the musculature of the lower limbs
HP:0002380Fasciculations

Run the differential on the 3 obligate / very frequent terms

Annotation source: 26424145[PMID]_26437029[PMID]

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Sources for this card