Preferred Label : Telangiectasia, hereditary hemorrhagic, type 1;
Symbol : HHT1;
CISMeF acronym : HHT; HHT1;
Type : Phenotype, molecular basis known;
Alternative titles and symbols : Telangiectasia, hereditary hemorrhagic, of rendu, osler, and weber; Osler-rendu-weber disease; HHT; Orw disease;
Description : Hereditary hemorrhagic telangiectasia (HHT) is an autosomal dominant vascular dysplasia
leading to telangiectases and arteriovenous malformations of skin, mucosa, and viscera.
Epistaxis and gastrointestinal bleeding are frequent complications of mucosal involvement.
Visceral involvement includes that of the lung, liver, and brain. The most frequent
form of hereditary hemorrhagic telangiectasia maps to the long arm of chromosome 9.
- Genetic Heterogeneity of Hereditary Hemorrhagic Telangiectasia See also HHT2 (600376),
which is caused by mutations in the ALK1 gene (ACVRL1; 601284) on chromosome 12q.
HHT3 (601101) has been mapped to chromosome 5q31 and HHT4 (610655) to chromosome 7p14.
See also juvenile polyposis/HHT syndrome (175050), caused by mutation in the SMAD4
gene (600993).;
Inheritance : Autosomal dominant;
Molecular basis : Caused by mutation in the endoglin gene (ENG, 131195.0001);
Prefixed ID : #187300;
Origin ID : 187300;
UMLS CUI : C4551861;
Automatic exact mappings (from CISMeF team)
Currated CISMeF NLP mapping
DO Cross reference
False automatic mappings
Genes related to phenotype
HPO term(s)
ORDO concept(s)
Semantic type(s)
UMLS correspondences (same concept)
Validated automatic mappings to BTNT