raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2884

Piebaldism

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

Piebaldism is a rare congenital pigmentation skin disorder characterized by the presence of hypopigmented and depigmented skin areas (leukoderma) on various parts of the body, preferentially on the forehead, chest, abdomen, upper arms, and lower extremities, that are associated with a white forelock (poliosis), and in some cases with hypopigmented and depigmented eyebrows and eyelashes.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPiebaldism
frPiébaldisme
dePiebaldismus
esPiebaldismo
itPiebaldismo
nlPiebaldisme
ptPiebaldismo
plPiebaldyzm
csPiebaldismus
ukПєбальдизм
zh斑驳病
trPiebaldizm

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM172800Evalidated
ICD-10E70.3NTBTindexvalidated
ICD-11EC23.2YNTBTindexvalidated
MONDO0008244Evalidated
MeSHD016116Evalidated
UMLSC0080024Evalidated
GARD4344Evalidated
MedDRA10084262Evalidated

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 (2):

No children.

4

Genes

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
KITDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:6342ENSG000001574041649204q12KIT proto-oncogene, receptor tyrosine kinase22670867[PMID]_25199540[PMID]
SNAI2Disease-causing germline mutation(s) inAssessedHGNC:11094ENSG000000195496021508q11.21snail family transcriptional repressor 212955764[PMID]_24443330[PMID]
5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

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

19 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0005599Hypopigmentation of hair
HP:0007544Piebaldism
HP:0002211White forelock
Frequent (79-30%)
HP:0001053Hypopigmented skin patches
HP:0012733Macule
HP:0002226White eyebrow
HP:0002227White eyelashes
Occasional (29-5%)
HP:0002683Abnormality of the calvaria
HP:0002251Aganglionic megacolon
HP:0001251Ataxia
HP:0000365Hearing impairment
HP:0001100Heterochromia iridis
HP:0001252Hypotonia
HP:0001249Intellectual disability
HP:0000343Long philtrum
HP:0000252Microcephaly
HP:0008069Neoplasm of the skin
HP:0000664Synophrys
HP:0000431Wide nasal bridge

Run the differential on the 3 obligate / very frequent terms

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Sources for this card