Paris: DNA in a pregnant woman`s blood can reliably show whether her foetus has Down`s syndrome, thus hugely reducing the need for invasive test procedures such as amniocentesis, research published on Tuesday said.Down`s syndrome, a major developmental disorder also called trisomy 21, occurs in around one in every 800 live births.
The test was carried out among 753 women who were all in the high-risk category.Eighty-six of them were found to be carrying a foetus with Down`s. The test detected this with 96.6 percent accuracy and did not deliver any "false negatives," meaning that it wrongly said a woman did not have a Down`s foetus."The sequencing test could be used to rule out trisomy 21 among high-risk pregnancies before proceeding to invasive diagnostic testing," says the study, published online by the British Medical Journal (BMJ).Bureau Report
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