Hereditary hemorrhagic telangiectasia (HHT), also known as Osler disease, is an autosomal dominant vascular dysplasia characterized by severe recurrent nasal and gastrointestinal bleeding and cutaneomucosal telangiectases. HHT is often associated with arteriovenous malformations in the pulmonary, hepatic, cerebral, and spinal circulations. The disease arises from defects in TGF-beta signaling. It has been reported that mutations in SMAD4 cause the combined juvenile polyposis and HHT (JPHT) syndrome.
Category
Congenital malformation
Brite
Human diseases in ICD-11 classification [BR:br08403]
20 Developmental anomalies
Structural developmental anomalies primarily affecting one body system
Structural developmental anomalies of the circulatory system
LA90 Structural developmental anomalies of the peripheral vascular system
H00533 Hereditary hemorrhagic telangiectasia
Pathway-based classification of diseases [BR:br08402]
Signal transduction
nt06507 TGFB signaling
H00533 Hereditary hemorrhagic telangiectasia