raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:307936

Hypotrichosis-osteolysis-periodontitis-palmoplantar keratoderma syndrome

Synonyms: HOPP syndrome · Hypotrichosis-osteolysis-periodontitis-palmoplantar hyperkeratosis syndrome · Hypotrichosis-striate palmoplantar hyperkeratosis-acroosteolysis-periodontitis syndrome · Hypotrichosis-striate palmoplantar keratoderma-acroosteolysis-periodontitis syndrome

Type
Disease
Group
Disorder
Age of onset
Infancy, Neonatal
Status
active

Hypotrichosis-osteolysis-periodontitis-palmoplantar keratoderma syndrome is an extremely rare ectodermal dysplasia syndrome characterized by hypotrichosis universalis with mild to severe scarring alopecia, acro-osteolysis, onychogryphosis, thin and tapered fingertips, periodontitis and caries leading to premature teeth loss, linear or reticular palmoplantar keratoderma and erythematous, scaling, psoriasis-like skin lesions on arms and legs. Lingua plicata and ventricular tachycardia have also been observed.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enHypotrichosis-osteolysis-periodontitis-palmoplantar keratoderma syndromeHOPP syndrome · Hypotrichosis-osteolysis-periodontitis-palmoplantar hyperkeratosis syndrome · Hypotrichosis-striate palmoplantar hyperkeratosis-acroosteolysis-periodontitis syndrome · Hypotrichosis-striate palmoplantar keratoderma-acroosteolysis-periodontitis syndrome
frSyndrome d'hypotrichose-ostéolyse-périodontite-kératodermie palmoplantaireSyndrome HOPP · Syndrome d'hypotrichose-hyperkératose palmoplantaire-acro-ostéolyse-périodontite · Syndrome d'hypotrichose-kératodermie palmoplantaire-acro-ostéolyse-périodontite · Syndrome d'hypotrichose-ostéolyse-périodontite-hyperkératose palmoplantaire
deHypotrichosis-Osteolysis-Periodontitis-Palmoplantarkeratose-SyndromHOPP-Syndrom · Hypotrichose-Keratosis palmoplantaris striata-Akroosteolyse-Periodontitis-Syndrom
esSíndrome de hipotricosis-osteólisis-periodontitis-queratodermia palmoplantarSíndrome HOPP · Síndrome de hipotricosis-hiperqueratosis palmoplantar estriada-acrooestólisis-periodontitis · Síndrome de hipotricosis-osteólisis-periodontitis-hiperqueratosis palmoplantar · Síndrome de hipotricosis-queratodermia palmoplantar estriada-acrooestólisis-periodontitis
itSindrome ipotricosi-osteolisi-periodontite-cheratoderma palmoplantareSindrome HOPP · Sindrome ipotricosi-cheratoderma palmoplantare striato-acroosteolisi-periodontite · Sindrome ipotricosi-ipercheratosi palmoplantare striato-acroosteolisi-periodontite · Sindrome ipotricosi-osteolisi-periodontite-ipercheratosi palmoplantare
nlHypotrichose-osteolyse-periodontitis-palmoplantaire keratodermie-syndroomHOPP-syndroom · Hypotrichose-gestreepte palmoplantaire hyperkeratose-acro-osteolyse-periodontitis-syndroom · Hypotrichose-gestreepte palmoplantaire keratodermie-acro-osteolyse-periodontitis-syndroom · Hypotrichose-osteolyse-periodontitis-palmoplantaire hyperkeratose-syndroom
ptSíndrome de hipotricose-osteólise-periodontite-queratodermia palmoplantarSíndrome de hipotricose-osteólise-periodontite-hiperqueratose palmoplantar
plZespół hipotrichoza-osteoliza-zapalenie przyzębia-rogowiec dłoniowo-podeszwowyZespół hipotrichoza-osteoliza-zapalenie przyzębia-hiperkeratoza dłoniowo-podeszwowa · Zespół HOPP
csSyndrom zahrnující hypotrichózu, osteolýzu, periodontitis a palmoplantární keratodermaHOPP syndrom · Syndrom zahrnující hypotrichózu, osteolýzu, periodontitis a palmoplantární hyperkeratózu
ukСиндром гіпотрихозу-остеолізу-періодонтиту-пальмоплантарної кератодерміїHOPP-синдром · Синдром гіпотрихозу-остеолізу-періодонтиту-пальмоплантарного гіперкератозу · Синдром гіпотрихозу - смугастого долонно-підошовного гіперкератозу - акроостеолізу - пародонтиту · Синдром гіпотрихозу - смугастої долонно-підошовної кератодермії - акроостеолізу - пародонтиту
zh少毛症-骨质溶解-牙周炎-掌跖角化综合征少毛症-骨质溶解-牙周炎-掌跖角化综合征
trHipotrikoz-osteoliz-periodontitis-palmoplantar keratoderma sendromuHipotrikoz-çizgili palmoplantar keratoderma-akroosteolizis-periodontitis sendromu · Hipotrikoz-çizgili palmoplantar hiperkeratoz-akroosteoliz-periodontitis sendromu · HOPP sendromu · Hipotrikoz-osteoliz-periodontitis-palmoplantar hiperkeratoz sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM607658Evalidated
ICD-10Q82.8NTBTattributedvalidated
ICD-11EC20.31NTBTindexvalidated
MONDO0011884Evalidated
MeSHC564357Evalidated
UMLSC1843285Evalidated

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 (3):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_12207605[PMID]
Cases/families2 casesWorldwideCase(s)Validated12207605[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