raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:363417

Temtamy preaxial brachydactyly syndrome

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

A rare, genetic, syndromic dysostosis characterized by bilateral, symmetrical, preaxial brachydactyly associated with hyperphalangy, motor developmental delay and intellectual disability, growth retardation, sensorineural hearing loss, dental abnormalities (incuding misalignment of teeth, talon cusps, microdontia), and facial dysmorphism that includes plagiocephaly, round face, hypertelorism, malar hypoplasia, malformed ears, microstomia and micro/retrognathia.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enTemtamy preaxial brachydactyly syndrome
frSyndrome de brachydactylie préaxiale de Temtamy
deTemtamy präaxiales Brachydaktylie-Syndrom
esSíndrome de braquidactilia preaxial de Temtamy
itSindrome da brachidattilia preassiale di Temtamy
nlPreaxiale brachydactylie van Temtamy-syndroom
ptSíndrome de braquidactilia preaxial de Temtamy
plZespół brachydaktylii przedosiowej Temtamy
csTemtamyové syndrom preaxiální brachydaktylie
ukСиндром преаксіальної брахідактилії Темтамі
zhTemtamy型轴前短指综合征
trTemtamy preaksiyal brakidaktili sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM605282Evalidated
ICD-10Q87.2NTBTattributedvalidated
ICD-11LB75.YNTBTattributedvalidated
MONDO0011533Evalidated
MeSHC536958Evalidated
UMLSC1854466Evalidated
GARD9679Evalidated

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 (7):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
CHSY1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:17198ENSG0000013187360818315q26.3chondroitin sulfate synthase 121129728[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families18 casesWorldwideCase(s)Validated21129727[PMID]_2129728[PMID]_19952732[PMID]_15365460[PMID]_9823490[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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

48 annotations · validated 2019-09-20
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0011297Abnormal digit morphology
HP:0009942Duplication of thumb phalanx
Frequent (79-30%)
HP:0001999Abnormal facial shape
HP:0000164Abnormality of the dentition
HP:0001090Abnormally large globe
HP:0001156Brachydactyly
HP:0009608Complete duplication of proximal phalanx of the thumb
HP:0009966Complete duplication of the middle phalanx of the 3rd finger
HP:0001263Global developmental delay
HP:0001510Growth delay
HP:0000668Hypodontia
HP:0001249Intellectual disability
HP:0009970Partial duplication of the proximal phalanx of the 3rd finger
HP:0009944Partial duplication of thumb phalanx
HP:0006152Proximal symphalangism of hands
HP:0008625Severe sensorineural hearing impairment
HP:0100266Synostosis of carpals/tarsals
HP:0011087Talon cusp
HP:0001566Widely-spaced maxillary central incisors
Occasional (29-5%)
HP:0040159Abnormal spaced incisors
HP:0011078Abnormality of canine
HP:0000517Abnormality of the lens
HP:0012795Abnormality of the optic disc
HP:0000592Blue sclerae
HP:0040022Clinodactyly of the 2nd finger
HP:0004209Clinodactyly of the 5th finger
HP:0010554Cutaneous finger syndactyly
HP:0000327Hypoplasia of the maxilla
HP:0000369Low-set ears
HP:0000691Microdontia
HP:0000347Micrognathia
HP:0000160Narrow mouth
HP:0000677Oligodontia
HP:0000648Optic atrophy
HP:0002465Poor speech
HP:0005037Proximal radio-ulnar synostosis
HP:0009466Radial deviation of finger
HP:0000311Round face
HP:0001773Short foot
HP:0010109Short hallux
HP:0003196Short nose
HP:0004279Short palm
HP:0004322Short stature
HP:0001328Specific learning disability
HP:0008368Tarsal synostosis
HP:0100345Tibial deviation of the 2nd toe
HP:0100347Tibial deviation of the 5th toe
HP:0000692Tooth malposition

Run the differential on the 2 obligate / very frequent terms

Annotation source: 24269551[PMID]_21129727[PMID]_19952732[PMID]_9823490[PMID]

7

Sources for this card