raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2655

Thanatophoric dysplasia

Synonyms: TD

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant, Not applicable
Age of onset
Antenatal, Neonatal
Status
active

A primary bone dysplasia with micromelia characterized by micromelia, macrocephaly, narrow thorax, and distinctive facial features. It includes TD, type 1 (TD1) and TD, type 2 (TD2), that can be differentiated from each other by femur and skull shape.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enThanatophoric dysplasiaTD
frDysplasie thanatophore= en
deThanatophore DysplasieKleinwuchs, thanatophorer · TD
esDisplasia tanatofóricaEnanismo tanatofórico · TD
itDisplasia tanatoforaNanismo tanatoforo · TD
nlThanatofore dysplasieTD · Thanatofore dwerggroei
ptDisplasia tanatofóricaNanismo tanatofórico
plDysplazja tanatoforycznaKarłowatość tanatoforyczna · TD
csTanatoforická dysplázieTD · Tanatoforické trpaslictví
ukТанатофорна дисплазія= en
zh致死性发育不全= en
trTanatoforik displazi= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM156830BTNTvalidated
OMIM187600BTNTvalidated
OMIM187601BTNTvalidated
ICD-10Q77.1Especificvalidated
ICD-11LD24.02Especificvalidated
MONDO0017042Evalidated
MeSHD013796Evalidated
UMLSC0039743Evalidated
GARD85Evalidated
MedDRA10089187Evalidated

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):

Children (2):

4

Genes

0 direct · 2 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
FGFR3ORPHA:1860Thanatophoric dysplasia type 1Disease-causing germline mutation(s) inAssessedHGNC:3690ENSG000000680781349344p16.3fibroblast growth factor receptor 320301540[PMID]
FGFR3ORPHA:93274Thanatophoric dysplasia type 2Disease-causing germline mutation(s) inAssessedHGNC:3690ENSG000000680781349344p16.3fibroblast growth factor receptor 320301540[PMID]
5

Prevalence and incidence

9 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 100 0003.5 / 100 000EuropeValue and classValidated[EXPERT]
Point prevalence<1 / 1 000 000—EuropeClass onlyNot yet validatedORPHANET
Prevalence at birth1-9 / 100 0002.8 / 100 000FranceValue and classValidated2785882[PMID]
Prevalence at birth1-9 / 100 0003.5 / 100 000ItalyValue and classValidated3071354[PMID]
Prevalence at birth1-9 / 100 0001.7 / 100 000SwedenValue and classValidated8449630[PMID]
Prevalence at birth1-9 / 100 0003.8 / 100 000DenmarkValue and classValidated2783977[PMID]
Prevalence at birth1-9 / 100 0008 / 100 000IrelandValue and classValidated22375084[PMID]
Prevalence at birth1-9 / 100 0004.7 / 100 000Latin AmericaValue and classValidated22407836[PMID]
Prevalence at birth1-9 / 100 0004.3 / 100 000United StatesValue and classValidated22461456[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

41 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000944Abnormal metaphysis morphology
HP:0005280Depressed nasal bridge
HP:0008873Disproportionate short-limb short stature
HP:0012368Flat face
HP:0001252Hypotonia
HP:0010880Increased nuchal translucency
HP:0002187Intellectual disability, profound
HP:0000256Macrocephaly
HP:0002983Micromelia
HP:0000774Narrow chest
HP:0000926Platyspondyly
HP:0002089Pulmonary hypoplasia
HP:0001582Redundant skin
HP:0010306Short thorax
HP:0002652Skeletal dysplasia
Frequent (79-30%)
HP:0001156Brachydactyly
HP:0002007Frontal bossing
HP:0002282Gray matter heterotopia
HP:0000365Hearing impairment
HP:0001511Intrauterine growth retardation
HP:0011800Midface retrusion
HP:0000520Proptosis
HP:0002119Ventriculomegaly
Occasional (29-5%)
HP:0030680Abnormal cardiovascular system morphology
HP:0002867Abnormality of the ilium
HP:0000077Abnormality of the kidney
HP:0100781Abnormality of the sacroiliac joint
HP:0000956Acanthosis nigricans
HP:0001631Atrial septal defect
HP:0002676Cloverleaf skull
HP:0000494Downslanted palpebral fissures
HP:0001385Hip dysplasia
HP:0000238Hydrocephalus
HP:0001382Joint hypermobility
HP:0001387Joint stiffness
HP:0002808Kyphosis
HP:0000369Low-set ears
HP:0001643Patent ductus arteriosus
HP:0001561Polyhydramnios
HP:0002093Respiratory insufficiency
HP:0001250Seizure

Run the differential on the 12 obligate / very frequent terms

7

Sources for this card