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Chinese scientist He Jian Kui, who unleashed a moral storm after announcing the world's first two genetically modified children, said he was proud of his work.
Koi also revealed Wednesday that another volunteer to participate in her research was pregnant.
Kui, associate professor at the Southern University of Science and Technology in Shenzhen, China, gave a speech to some 700 people at the Human Genome Modification Summit of the University of Hong Kong.
"I am proud (…) of this study has been submitted to a scientific journal for review," he said, without mentioning the name of the scientific journal, noting that the university in which he was working was not aware of the study.
Kui said his work was self-financing and downplayed the fears that the research would be confidential, adding that he had been working for the scientific community for three years.
In online video recordings this week, he said he used a technology known as Crisper-Cass 9 to tweak Jenny's twins this month.
He added that the genetic modification would help protect the twin twins from the HIV virus, but the Chinese government and scientists refused to work, which Kui said, and a hospital linked to the research reported fraudulent consent. .
The Crysper-C9 technology allows scientists to cut and copy DNA, thereby boosting the hopes of a genetic reform to prevent disease.
There are concerns about safety and ethics.
More than 100 scientists, in an open letter Tuesday, said that the use of Crysis-K9 technology to alter human embryo genes was risky and unjustifiable, adding that "the doors of the world" hell are open. "
Koi said that eight couples had registered for the first time in search, after which one had withdrawn. The study requires that the father be infected with HIV and that the mother is not infected.
He added that the results could be applied to millions of people with underlying diseases and that he would be watching the twins for 18 years hoping that they could stay under observation.
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