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. Hereditary hemorrhagic telangiectasia type 1 (HHT1) is caused by heterozygous mutation in the gene encoding endoglin (ENG) on chromosome 9q34. (OMIM)
Note: Use of the qualifier "multiple interactions" designates that the annotated interaction
is comprised of a complex set of reactions and/or regulatory events, possibly involving
additional chemicals and/or gene products.
ClinVar Annotator: match by term: ENG-related condition | ClinVar Annotator: match by term: Haemorrhagic telangiectasia 1 | ClinVar Annotator: match by term: Telangiectasia, hereditary hemorrhagic, type 1