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Tay-Sachs disease: prenatal diagnosis
Science (New York, N.Y.)
|April 2, 1971
Summary
Prenatal diagnosis for Tay-Sachs disease is effective. Amniocentesis and hexosaminidase A assays accurately identified affected fetuses, allowing for informed reproductive decisions.
Area of Science:
- Medical Genetics
- Biochemistry
Background:
- Tay-Sachs disease is a severe genetic disorder.
- High-risk pregnancies require accurate prenatal diagnostic methods.
Purpose of the Study:
- To evaluate the efficacy of prenatal diagnosis for Tay-Sachs disease.
- To assess the utility of amniocentesis and hexosaminidase A assays.
Main Methods:
- Amniocentesis was performed on 15 pregnant women at risk.
- Hexosaminidase A assays were conducted on amniotic fluid and cells.
- Analysis included uncultured and cultured amniotic cells.
Main Results:
- Prenatal diagnosis identified Tay-Sachs disease in 6 fetuses.
- Diagnosis was confirmed postnatally in one case and after therapeutic abortion in five.
- Nine fetuses were diagnosed as unaffected, with postnatal confirmation in six.
Conclusions:
- Prenatal diagnosis using amniocentesis and hexosaminidase A assays is reliable for Tay-Sachs disease.
- This method aids in reproductive decision-making for at-risk families.