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Hypoplastic left heart. Evidence for possible autosomal recessive inheritance
Birth Defects Original Article Series
|January 1, 1974
Summary
Hypoplastic left heart syndrome (HLHS) appears to be inherited in an autosomal recessive pattern. This genetic finding suggests a need for genetic counseling in families with affected infants.
Area of Science:
- Pediatric Cardiology
- Medical Genetics
- Congenital Heart Disease
Background:
- Hypoplastic left heart syndrome (HLHS) is a severe congenital heart defect.
- Understanding the inheritance patterns of HLHS is crucial for genetic counseling and risk assessment.
Observation:
- A study examined six families with 15 individuals affected by HLHS across nine sibships.
- The condition was uniformly progressive and fatal, typically within the first two weeks of life.
- Consanguinity was observed in five of the nine families.
Findings:
- The distribution of HLHS cases within families suggests autosomal recessive inheritance.
- Newborn survey data, using ascertainment through affected infants, support this genetic hypothesis.
- Consanguinity further strengthens the evidence for recessive inheritance patterns.
Implications:
- The findings indicate a significant genetic component to HLHS, likely autosomal recessive.
- This information is vital for genetic counseling of families with a history of HLHS.
- Further research into the specific genes involved in HLHS is warranted.