congenital mitral valve agenesis
Findings
No curated finding names congenital mitral valve agenesis yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Mitral valve agenesis is a rare congenital heart malformation defined as an agenesis or severe hypoplasia of both mitral valve leaflets (complete agenesis) or one of the leaflets (partial agenesis). Complete mitral valve agenesis presents in the neonatal period with symptoms of severe mitral regurgitation and is rapidly fatal unless surgically treated. It is frequently associated with other heart malformations. Partial mitral valve agenesis may present at various ages, usually with symptoms of mitral regurgitation.
Definition from the Mondo Disease Ontology (MONDO:0020403), read 2026-09-29. CC BY 4.0.