“Doctors may soon be able to diagnose inherited diseases such as cystic fibrosis, thalassaemia and sickle cell anemia in fetuses by simply testing a blood sample taken from the mother.
Until now, prenatal diagnoses of such disorders have been possible only through invasive procedures like amniocentesis, which carry a risk of fetal miscarriage.
But scientists in Hong Kong and Thailand may have found a way to diagnose in fetuses such “monogenic” diseases, which are caused by a single error in a single gene in the human DNA. “
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