raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:93299

Achondrogenesis type 1A

Synonyms: Achondrogenesis, Houston-Harris type

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Age of onset
Antenatal, Neonatal
Status
active

A rare, lethal type of achondrogenesis characterized by dwarfism with extremely short limbs, narrow chest, short ribs that are easily fractured, soft skull bones and distinctive histological features of the cartilage.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAchondrogenesis type 1AAchondrogenesis, Houston-Harris type
frAchondrogenèse type 1AAchondrogenèse type Houston-Harris
deAchondrogenesie Typ 1A
esAcondrogénesis tipo 1AAcondrogénesis tipo Houston-Harris
itAcondrogenesi, tipo 1AAcondrogenesi, tipo Houston-Harris
nlAchondrogenesie type 1AAchondrogenesie, Houston-Harris-type
ptAcondrogénese tipo 1A
plAchondrogeneza typu 1AAchondrogeneza typu Houstona i Harrisa
csAchondrogeneze, typ 1AAchondrogeneze, Houstonův-Harrisův typ · Achondrogeneze, Houston-Harrisův typ
ukАхондрогенез, тип 1ААхондрогенез, тип Хюстона-Харріса
zh软骨成长不全1A型软骨成长不全,Houston-Harris型
trAkondrogenez tipi 1AAkondrogenez, Houston-Harris tipi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM200600Evalidated
ICD-10Q77.0NTBTattributedvalidated
ICD-11LD24.50NTBTindexvalidated
MONDO0008701Evalidated
MeSHC536015Evalidated
UMLSC0265273Evalidated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
TRIP11Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:12305ENSG0000010081560450514q32.12thyroid hormone receptor interactor 1120089971[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

27 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003270Abdominal distention
HP:0003336Abnormal enchondral ossification
HP:0000463Anteverted nares
HP:0006703Aplasia/Hypoplasia of the lungs
HP:0012368Flat face
HP:0002007Frontal bossing
HP:0001789Hydrops fetalis
HP:0005716Lethal skeletal dysplasia
HP:0000343Long philtrum
HP:0000256Macrocephaly
HP:0000347Micrognathia
HP:0002983Micromelia
HP:0000774Narrow chest
HP:0003510Severe short stature
HP:0000470Short neck
HP:0003196Short nose
HP:0010306Short thorax
HP:0000474Thickened nuchal skin fold
Frequent (79-30%)
HP:0100541Femoral hernia
HP:0006640Multiple ribs fractures
HP:0001561Polyhydramnios
HP:0002757Recurrent fractures
HP:0001773Short foot
HP:0004279Short palm
HP:0001537Umbilical hernia
Occasional (29-5%)
HP:0030680Abnormal cardiovascular system morphology
HP:0000476Cystic hygroma

Run the differential on the 12 obligate / very frequent terms

7

Sources for this card