raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:60030

Loeys-Dietz syndrome

Synonyms: Aortic aneurysm syndrome due to TGF-beta receptors anomalies

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

Loeys-Dietz syndrome is a rare genetic connective tissue disorder characterized by a broad spectrum of craniofacial, vascular and skeletal manifestations with four genetic subtypes described forming a clinical continuum.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enLoeys-Dietz syndromeAortic aneurysm syndrome due to TGF-beta receptors anomalies
frSyndrome de Loeys-Dietz
deLoeys-Dietz-SyndromAortenaneurysma-Syndrom durch TGFbeta-Rezeptor-Anomalien
esSíndrome de Loeys-DietzSíndrome de aneurisma aórtico por anomalías en los receptores del TGF-beta
itSindrome di Loeys-DietzSindrome dell'aneurisma aortico da anomalie dei recettori TGF-beta
nlSyndroom van Loeys-DietzSyndroom van aneurysma van aorta door anomalieën van TGF-bèta-receptoren
ptSíndrome Loyes-DietzSíndrome aneurisma aórtico por anomalia nos recetores beta do TGF
plZespół Loeysa i DietzaZespół tętniaka aorty spowodowany anomaliami receptorów TGF-beta
csLoeysův-Dietzův syndromSyndrom aortálního aneuryzmatu způsobeného anomáliemi receptorů pro TGF-beta · Loeys-Dietzův syndrom
ukСиндром Лойса-ДіцаСиндром аневризми аорти через аномалії рецепторів TGF-бета
zh洛伊-迪茨综合征TGF-β受体异常型主动脉瘤综合征
trLoeys-Dietz sendromuTGF-beta reseptör anomalilerine bağlı aort anevrizma sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM609192BTNTvalidated
OMIM610168BTNTvalidated
OMIM613795BTNTvalidated
OMIM614816BTNTvalidated
OMIM615582BTNTvalidated
OMIM619472BTNTvalidated
OMIM619656BTNTvalidated
ICD-10Q87.4NTBTattributedvalidated
ICD-11BD50.ZNTBTindexvalidated
MONDO0018954Evalidated
MeSHD055947Evalidated
UMLSC2697932Evalidated
GARD10788Evalidated
MedDRA10081284Evalidated

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.

Codes that Orphanet moved or referred to this one:

4

Genes

7 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
IPO8Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:9853ENSG0000013370460560012p11.21importin 834010605[PMID]
SMAD2Disease-causing germline mutation(s) inAssessedHGNC:6768ENSG0000017538760136618q21.1SMAD family member 229392890[PMID]_31000321[PMID]
SMAD3Disease-causing germline mutation(s) inAssessedHGNC:6769ENSG0000016694960310915q22.33SMAD family member 332935439[PMID]_29392890[PMID]_31000321[PMID]
TGFB2Disease-causing germline mutation(s) inAssessedHGNC:11768ENSG000000929691902201q41transforming growth factor beta 224440784[PMID]_25163805[PMID]_28544325[PMID]
TGFB3Disease-causing germline mutation(s) inAssessedHGNC:11769ENSG0000011969919023014q24.3transforming growth factor beta 326184463[PMID]_29392890[PMID]
TGFBR1Disease-causing germline mutation(s) inAssessedHGNC:11772ENSG000001067991901819q22.33transforming growth factor beta receptor 115731757[PMID]_16928994[PMID]
TGFBR2Disease-causing germline mutation(s) inAssessedHGNC:11773ENSG000001635131901823p24.1transforming growth factor beta receptor 215731757[PMID]_16928994[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families52 familiesWorldwideFamily(ies)Validated16928994[PMID]
Point prevalenceUnknown—WorldwideClass onlyValidatedORPHANET_16928994[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

38 annotations · validated 2025-06-23
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0004942Aortic aneurysm
HP:0002647Aortic dissection
HP:0005294Arterial dissection
HP:0005116Arterial tortuosity
HP:0002617Dilatation
HP:0001643Patent ductus arteriosus
HP:0001763Pes planus
HP:0100718Uterine rupture
Frequent (79-30%)
HP:0001166Arachnodactyly
HP:0002099Asthma
HP:0000987Atypical scarring of skin
HP:0000193Bifid uvula
HP:0000592Blue sclerae
HP:0100490Camptodactyly of finger
HP:0000175Cleft palate
HP:0001363Craniosynostosis
HP:0000964Eczematoid dermatitis
HP:0000316Hypertelorism
HP:0001382Joint hypermobility
HP:0000272Malar flattening
HP:0000347Micrognathia
HP:0000202Orofacial cleft
HP:0002650Scoliosis
HP:0001065Striae distensae
HP:0001762Talipes equinovarus
HP:0000098Tall stature
Occasional (29-5%)
HP:0001892Abnormal bleeding
HP:0000978Bruising susceptibility
HP:0001695Cardiac arrest
HP:0410151Eosinophilic infiltration of the esophagus
HP:0001373Joint dislocation
HP:0001382Joint hypermobility
HP:0001653Mitral regurgitation
HP:0000545Myopia
HP:0000768Pectus carinatum
HP:0000767Pectus excavatum
HP:0002108Spontaneous pneumothorax
HP:0000963Thin skin

Run the differential on the 8 obligate / very frequent terms

Annotation source: 20301312[PMID]_16928994[PMID]_8287183[PMID]

7

Sources for this card