raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:448264

Isolated focal non-epidermolytic palmoplantar keratoderma

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

A rare hereditary palmoplantar keratoderma characterized by focal hyperkeratotic lesions on the palms and soles. Histopathologic examination reveals prominent hyperkeratosis, thickened stratum spinosum with reduced stratum granulosum, disadhesion of cells in the suprabasal layers, elongation of rete ridges, and sparse lymphocyte infiltration in the dermis.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enIsolated focal non-epidermolytic palmoplantar keratoderma
frKératodermie palmoplantaire focale non épidermolytique isolée
dePalmoplantarkeratose, isolierte fokale nichtepidermolytische
esQueratodermia palmoplantar no epidermolítica focal aislada
itCheratoderma palmoplantare non epidermolitico focale isolato
nlGeïsoleerde focale niet-epidermolytische palmoplantaire keratodermie
ptQueratodermia palmoplantar não-epidermolítica focal isolada
plOgniskowy rogowiec dłoni i stóp - odmiana nieepidermolityczna
csIzolovaná fokální non-epidermolytická palmoplantární keratoderma
ukІзольована фокальна неепідермолітична долонно-підошовна кератодермія
zh单发的局灶性非表皮溶解的掌跖角化病
trİzole fokal epidermolitik olmayan palmoplantar keratoderma

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM613000BTNTvalidated
OMIM616400BTNTvalidated
ICD-10Q82.8NTBTattributedvalidated
ICD-11EC20.31NTBTattributedvalidated
MONDO0014622Evalidated
UMLSC5681107Evalidated

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

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
TRPV3Disease-causing germline mutation(s) (gain of function) inAssessedHGNC:18084ENSG0000016772360706617p13.2transient receptor potential cation channel subfamily V member 325285920[PMID]
KRT16Disease-causing germline mutation(s) inAssessedHGNC:6423ENSG0000018683214806717q21.2keratin 168595410[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families2 casesWorldwideCase(s)Validated25285920[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_25285920[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