raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2386

Leukoencephalopathy-palmoplantar keratoderma syndrome

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

Leukoencephalopathy-palmoplantar keratoderma syndrome is a rare, genetic epidermal disease characterized by early childhood-onset of punctate palmoplantar keratoderma in association with adult-onset leukoencephalopathy manifested by progressive tetrapyramidal syndrome and cognitive deterioration.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enLeukoencephalopathy-palmoplantar keratoderma syndrome
frSyndrome de leucoencéphalopathie-kératose palmoplantaire
deLeukoenzephalopathie - Palmoplantarkeratose
esSíndrome de leucoencefalopatía-queratodermia palmoplantar
itSindrome da leucoencefalopatia e cheratoderma plantare
nlLeuko-encefalopathie - palmoplantaire keratodermie-syndroom
ptSíndrome de leucoencefalopatia-queratodermia palmoplantar
plZespół leukoencefalopatii i rogowca dłoni i stóp
csSyndrom zahrnující leukoencefalopatii a palmoplantární keratoderma
ukСиндром лейкоенцефалопатії-пальмоплантарної кератодермії
zh脑白质病-掌跖皮肤角化病综合征
trLökoensefalopati-palmoplantar keratoderma sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q82.8NTBTattributedvalidated
ICD-11EC20.32NTBTattributedvalidated
MONDO0016545Evalidated
UMLSC4749769Evalidated
GARD3232Evalidated

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/families4 casesWorldwideCase(s)Validated7854535[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_7854535[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 2016-06-27
HPOTerm (as annotated by Orphanet)Diagnostic
Obligate (100%)
HP:0100543Cognitive impairment
HP:0001276Hypertonia
HP:0000972Palmoplantar hyperkeratosis
HP:0002317Unsteady gait
Very frequent (99-80%)
HP:0000726Dementia
HP:0010845EEG with generalized slow activity
HP:0002200Pseudobulbar signs
HP:0002273Tetraparesis
Frequent (79-30%)
HP:0002312Clumsiness
HP:0100252Diaphyseal dysplasia
HP:0001324Muscle weakness
HP:0200034Papule
HP:0001350Slurred speech
HP:0030051Tip-toe gait
Occasional (29-5%)
HP:0003380Decreased number of peripheral myelinated nerve fibers
HP:0002079Hypoplasia of the corpus callosum

Run the differential on the 8 obligate / very frequent terms

Annotation source: 7854535[PMID]

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Sources for this card