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    2 Chinese Babies With Edited Genes May Face Higher Risk Of Premature Death

    Analysis of DNA from more than 400,000 people in the U.K. suggests a genetic modification that protects against HIV may actually increase the overall risk of premature death.
    by Rob Stein Jun 03, 2019 3 minutes
    The genetic variation Chinese scientist He Jiankui was trying to re-create when he edited twin girls' DNA may be more harmful than helpful to health overall, a new study says.

    There are new concerns about the world's first genetically modified babies.

    It appears that the genetic variation a Chinese scientist was trying to re-create when he edited twin girls' DNA may be more harmful than helpful to health overall, according to a study published Monday. The study, in Nature Medicine, involves the DNA of more than 400,000 people.

    "This is a cautionary tale," says Rasmus Nielsen, a professor of integrative biologyat the University of California, Berkeley, who led the new study.

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