raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1300

Autosomal dominant popliteal pterygium syndrome

Synonyms: Facio-genito-popliteal syndrome · Popliteal web syndrome

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

A rare genetic, multiple congenital anomalies syndrome characterized by cleft lip, with or without cleft palate, pits in the lower lip, contractures of the lower extremities, abnormal external genitalia, syndactyly of fingers and/or toes, and a pyramidal skin fold over the hallux nail.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAutosomal dominant popliteal pterygium syndromeFacio-genito-popliteal syndrome · Popliteal web syndrome
frSyndrome des ptérygiums poplités autosomique dominantSyndrome de la bride poplitée · Syndrome facio-génito-poplité
dePopliteales Pterygium-Syndrom, autosomal-dominantes
esSíndrome de pterigium poplíteo autosómico dominante
itSindrome dello pterigio popliteo autosomica dominanteSindrome della briglia poplitea
nlAutosomaal dominant popliteaal pterygium-syndroomFaciogenitopopliteaal syndroom · Popliteaal web-syndroom
ptSíndrome pterígio poplíteo autossómico dominanteSíndrome teia poplítea
plAutosomalny dominujący zespół skrzydlik podkolanowychZespół płetwistości podkolanowej · Zespół twarzowo-płciowo-podkolanowy
csSyndrom popliteálních řasFaciogenitopopliteální syndrom · Syndrom popliteálních blan · Autozomálně dominantní syndrom popliteálních pterygií
ukАутосомно-домінантний синдром підколінного птеригіумуЛицьово-геніто-поплітеальний синдром · Синдром підколінної ямки
zh常染色体显性遗传腘翼综合征面-生殖器-腘窝综合征
trOtozomal dominant popliteal piterjiyum sendromuPopliteal web sendromu · Fasiyo-genito-popliteal sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM119500Evalidated
ICD-10Q87.2NTBTattributedvalidated
ICD-11LD26.4YNTBTindexvalidated
MONDO0007334Evalidated
UMLSC5848052Evalidated

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):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
IRF6Disease-causing germline mutation(s) inAssessedHGNC:6121ENSG000001175956071991q32.2interferon regulatory factor 620301581[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 1 000 0000.3 / 100 000WorldwideValue and classValidatedORPHANET
Cases/families200 casesWorldwideCase(s)ValidatedORPHANET_[EXPERT]

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

24 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000175Cleft palate
HP:0002230Generalized hirsutism
HP:0001387Joint stiffness
HP:0000347Micrognathia
HP:0000219Thin upper lip vermilion
HP:0001770Toe syndactyly
Frequent (79-30%)
HP:0001597Abnormal nail morphology
HP:0000772Abnormal rib morphology
HP:0009755Ankyloblepharon
HP:0000048Bifid scrotum
HP:0000028Cryptorchidism
HP:0009754Fibrous syngnathia
HP:0006101Finger syndactyly
HP:0000059Hypoplastic labia majora
HP:0100267Lip pit
HP:0100335Non-midline cleft of the upper lip
HP:0008288Nonketotic hyperglycinemia
HP:0009756Popliteal pterygium
HP:0002650Scoliosis
HP:0000046Small scrotum
Occasional (29-5%)
HP:0000062Ambiguous genitalia
HP:0000453Choanal atresia
HP:0001328Specific learning disability
HP:0001171Split hand

Run the differential on the 6 obligate / very frequent terms

7

Sources for this card