A
Chinese researcher claimed on Monday that he helped to create the
world's first genetically edited babies - twin girls born this month
whose DNA he altered using the powerful tool known as CRISPR.
The
researcher, He Jiankui of Shenzhen, said he altered embryos for seven
couples during fertility treatments, resulting in one pregnancy thus
far. He claimed that his goal was not to cure or prevent inherited
diseases, but to give the ability to resist possible future infections
from HIV, the AIDS virus.
As of the time of publication, there
is no independent confirmation of He's claim and it has not been
published in any peer-reviewed journals. He revealed the news in Hong
Kong yesterday to one of the organizers of an international conference
on gene editing beginning today prior to an interview with the
Associated Press.
In recent years, scientists have developed a relatively easy
way to edit genes. The tool, called CRISPR-cas9, makes it possible to
operate on DNA to add an additional gene or disable one. Up until now,
CRISPR has been used primarily to create cell and animal models. These
are used to accelerate research into diseases such as cancer and mental
illness.
In the United States, editing sperm, eggs or embryos
(permitting any gene edits inheritable) is illegal except for lab
research. China outlaws human cloning but not specifically gene editing.
The
bulk of the scientific community believe that gene editing in humans is
too unsafe to try and some scientists have denounced this feat as human
experimentation.
He Jiankui, left, and Zhou Xiaqin work on a computer at a laboratory in Shenzhen. (AP Photo/Mark Schiefelbein) |
It’s “unconscionable ... an experiment on human beings that is not
morally or ethically defensible,” said Dr. Kiran Musunuru, a University
of Pennsylvania gene editing expert and editor of a genetics journal.
“This is far too premature,” said Dr. Eric Topol, who
heads the Scripps Research Translational Institute in California. “We’re
dealing with the operating instructions of a human being. It’s a big
deal.”
“I feel a strong responsibility that it’s not just to make a first, but
also make it an example,” He told the Associated Press. “Society will decide what to
do next” in terms of allowing or forbidding such science.
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