raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:3220

Deafness-enamel hypoplasia-nail defects syndrome

Synonyms: Hearing loss-enamel hypoplasia-nail defects syndrome · Heimler syndrome

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

A rare genetic disease characterized by sensorineural hearing loss, abnormalities in the secondary dentition (such as enamel hypoplasia, taurodontism, or dental overcrowding), and nail abnormalities (including leukonychia and presence of transverse ridges). Association with macular dystrophy has also been reported.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enDeafness-enamel hypoplasia-nail defects syndromeHearing loss-enamel hypoplasia-nail defects syndrome · Heimler syndrome
frSyndrome de surdité-hypoplasie de l'émail-anomalie des onglesSyndrome de Heimler
deSchwerhörigkeit-Schmelzhypoplasie-Nageldefekte-SyndromHeimler-Syndrom
esSíndrome de sordera-hipoplasia del esmalte-anomalías en las uñasSíndrome de hipoacusia-hipoplasia del esmalte-anomalías en las uñas
itSindrome sordità-ipoplasia dello smalto-difetti ungueali
nlDoofheid - glazuurhypoplasie - nageldefecten-syndroomSyndroom van Heimler
ptSíndrome de surdez-hipoplasia do esmalte-defeitos ungueaisSíndrome Heimler · Síndrome de perda auditiva-hipoplasia do esmalte-defeitos ungueais
plGłuchota - hipoplazja szkliwa - wady paznokciZespół Heimlera
csSyndrom zahrnující hluchotu, hypoplázii skloviny a defekty nehtůHeimlerův syndrom
ukСиндром глухоти-гіпоплазії емалі-дефектів нігтівСиндром втрати слуху-гіпоплазії емалі-дефектів нігтів · Синдром Геймлера
zh耳聋-牙釉质发育不全-指甲缺损综合征听力丧失-牙釉质发育不全-甲缺损综合征
trSağırlık-mine hipoplazisi-tırnak defektleri sendromuHeimler sendromu · İşitme kaybı-enamel hipoplazisi-tırnak defektleri sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM234580Evalidated
OMIM616617BTNTvalidated
ICD-10Q82.4NTBTattributedvalidated
ICD-11LD27.0YNTBTindexvalidated
MONDO0100229Evalidated
MeSHC535994Evalidated
UMLSC1856186Evalidated
GARD1687Evalidated

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 (4):

No children.

4

Genes

2 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
PEX1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:8850ENSG000001279806021367q21.2peroxisomal biogenesis factor 126387595[PMID]
PEX6Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:8859ENSG000001245876014986p21.1peroxisomal biogenesis factor 626387595[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_26387595[PMID]_27633571[PMID]_27302843[PMID]
Cases/families15 familiesWorldwideFamily(ies)Validated26387595[PMID]_27633571[PMID]_27302843[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

33 annotations · validated 2017-10-12
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000534Abnormal eyebrow morphology
HP:0000492Abnormal eyelid morphology
HP:0001231Abnormal fingernail morphology
HP:0011362Abnormal hair quantity
HP:0000614Abnormal nasolacrimal system morphology
HP:0008388Abnormal toenail morphology
HP:0000682Abnormality of dental enamel
HP:0100643Abnormality of nail color
HP:0000164Abnormality of the dentition
HP:0000819Diabetes mellitus
HP:0003241External genital hypoplasia
HP:0000365Hearing impairment
HP:0000135Hypogonadism
HP:0001249Intellectual disability
HP:0003777Pili torti
HP:0000407Sensorineural hearing impairment
HP:0000679Taurodontia
HP:0045074Thin eyebrow
Frequent (79-30%)
HP:0011675Arrhythmia
HP:0001176Large hands
HP:0000786Primary amenorrhea
HP:0000311Round face
HP:0004322Short stature
Occasional (29-5%)
HP:0000956Acanthosis nigricans
HP:0100490Camptodactyly of finger
HP:0002514Cerebral calcification
HP:0002750Delayed skeletal maturation
HP:0009890High anterior hairline
HP:0001265Hyporeflexia
HP:0008064Ichthyosis
HP:0010547Muscle flaccidity
HP:0009830Peripheral neuropathy
HP:0000763Sensory neuropathy

Run the differential on the 12 obligate / very frequent terms

Annotation source: 2063923[PMID]

7

Sources for this card