raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2213

Hypertelorism-microtia-facial clefting syndrome

Synonyms: Bixler-Christian-Gorlin syndrome · HMC syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Antenatal, Neonatal
Status
active

Hypertelorism-microtia-facial clefting syndrome, or HMC syndrome, is a very rare syndrome characterized by the combination of hypertelorism, cleft lip and palate and microtia.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enHypertelorism-microtia-facial clefting syndromeBixler-Christian-Gorlin syndrome · HMC syndrome
frSyndrome d'hypertélorisme-microtie-fente facialeSyndrome HMC · Syndrome de Bixler-Christian-Gorlin
deHypertelorismus - Mikrotie - GesichtsspaltenBixler-Christian-Gorlin-Syndrom · HMC-Syndrom
esSíndrome hipertelorismo-microtia-hendidura facial
itIpertelorismo - microtia - schisi faccialeSindrome HMC · Sindrome di Bixler-Christian-Gorlin
nlHypertelorisme - microtie - aangezichtsspleet-syndroomHMC-syndroom · Syndroom van Bixler-Christian-Gorlin
ptSíndrome de hipertelorismo-micrótia-fenda facialSíndrome Bixler-Christian-Gorlin · Síndrome HMC
plZespół hiperteloryzm -małe uszy-rozszczep twarzyZespół Bixlera, Christiana i Gorlina · Zespół HMC
csSyndrom zahrnující hypertelorismus, mikrocii a faciální rozštěpHMC syndrom · Bixlerův-Christianův-Gorlinův syndrom · Bixler-Christian-Gorlinův syndrom
ukСиндром гіпертелоризму-мікротії-розщеплення обличчяСиндром Бікслера-Крістіана-Горліна · Синдром HMC
zh器官间距过远-小耳症-面部裂综合征Bixler-Christian-Gorlin综合征
trHipertelorizm-mikrotia-yüz yarığı sendromuHMC sendromu · Bixler-Christian-Gorlin sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM239800Evalidated
ICD-10Q87.0NTBTattributedvalidated
MONDO0009404Evalidated
MeSHC537632Evalidated
UMLSC0220742Evalidated
GARD897Evalidated

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 (5):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families9 casesWorldwideCase(s)Validated11152141[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_11152141[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

15 annotations · validated 2017-07-27
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000413Atresia of the external auditory canal
HP:0000316Hypertelorism
HP:0009099Median cleft palate
HP:0000252Microcephaly
HP:0008551Microtia
Frequent (79-30%)
HP:0000405Conductive hearing impairment
HP:0004736Crossed fused renal ectopia
HP:0001263Global developmental delay
HP:0000085Horseshoe kidney
HP:0001249Intellectual disability
HP:0003510Severe short stature
HP:0001328Specific learning disability
HP:0003393Thenar muscle atrophy
Occasional (29-5%)
HP:0000456Bifid nasal tip
HP:0011803Bifid nose

Run the differential on the 5 obligate / very frequent terms

7

Sources for this card