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[Truncus arteriosus: an autosomal recessive disease?]
B le Marec1, S Odent, C Almange
1Service de Pédiatrie-Génétique Médicale, CHR Pontchaillou, Rennes.
Journal De Genetique Humaine
|September 1, 1989
Summary
Truncus arteriosus, a rare heart defect, may have autosomal recessive inheritance in some families, suggesting genetic factors. Further research and family screening are recommended for early detection and management.
Area of Science:
- Cardiology
- Medical Genetics
- Developmental Biology
Background:
- Truncus arteriosus is a rare congenital heart malformation.
- The recurrence risk for truncus arteriosus is not well-established.
- Familial aggregation of cases suggests potential genetic influences.
Observation:
- Three families reported with multiple affected individuals.
- One family exhibited high consanguinity, including two uncle-niece marriages.
- Comparison drawn to hypoplastic left heart syndrome.
Findings:
- Some cases of truncus arteriosus may follow an autosomal recessive inheritance pattern.
- Genetic factors could play a significant role in familial occurrences.
- High consanguinity in affected families supports recessive inheritance hypothesis.
Implications:
- Suggests the need for genetic counseling in families with truncus arteriosus.
- Recommends echocardiographic screening for pregnancies within affected families.
- Highlights the importance of considering genetic inheritance patterns in rare congenital heart defects.