It is "essential" the genetic modification of human embryos is allowed, a group of scientists, ethicists and policy experts says.
A macro photo showing in vitro fertilisation. Photo: 123rf
A Hinxton Group report said editing the genetic code of early stage embryos was of "tremendous value" to research.
It added although GM babies should not be allowed to be born at the moment, it may be "morally acceptable" under some circumstances in the future.
The United States refuses to fund research involving the gene editing of embryos.
The global Hinxton Group met in response to the phenomenal advances taking place in the field of genetics.
A range of novel techniques combine a "molecular sat-nav" that travels to a precise location in our DNA with a pair of "molecular scissors" that cut it.
It has transformed research in a wide range of fields but the progress means genetically modified babies are ceasing to be a prospect and fast becoming a possibility.
Earlier this year, a team at Sun Yat-sen University, in China, showed that errors in the DNA that led to a blood disorder could be corrected in early stage embryos.
In the future, the technologies could be used to prevent children being born with cystic fibrosis or genes that increase the risk of cancer.
There have been calls for a moratorium on such research, which has left many asking where to draw the line - should any embryo research be banned, should it be allowed by only for research or should GM babies be permitted?
A meeting of the influential Hinxton Group, in Manchester, acknowledged that the rate of progress meant there was a "pressure to make decisions" and argued embryo editing should be allowed.
In a statement, it said: "We believe that while this technology has tremendous value to basic research and enormous potential... it is not sufficiently developed to consider human genome editing for clinical reproductive purposes at this time."
This is in stark contrast to the US National Institutes of Health, which has already refused to fund any gene editing of embryos.
Director Francis Collins, who was also a key player in the Human Genome Project, said: "The concept of altering the human germline [inherited DNA] in embryos for clinical purposes has been debated over many years from many different perspectives, and has been viewed almost universally as a line that should not be crossed."
However, the Hinxton Group's full report acknowledges that "there may be morally acceptable uses of this technology in human reproduction, though further substantial discussion and debate will be required".
But even one of the principal figures in the discovery and development of Crispr (one of the easiest methods of editing DNA) has doubts.
Emmanuelle Charpentier told BBC News: "Personally, I don't think it is acceptable to manipulate the human germline for the purpose of changing some genetic traits that will be transmitted over generations.
"I just have a problem right now with regard to the manipulation of the human germlines."
Dr Peter Mills, from the Nuffield Council on Bioethics, added: "We have seen these uses coming over the horizon, but we need to decide whether we're going to invite them in when they reach our doorstep."
- BBC