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Campaigners are urging British lawmakers to seize a chance to become the first in the world to allow three-way fertility treatments to families who want to avoid passing on incurable diseases to their children.
Living without pain and suffering
In an open letter ahead of a parliamentary vote, charities and advocacy groups said the opportunity "offers families the first glimmer of hope that they might be able to have a baby that will live without pain and suffering".
The technique under debate is known as mitochondrial donation and is often referred to as three-parent in vitro fertilization (IVF) because the offspring would have genes from a mother, a father and from a female donor.
The process, still only at the research stage in Britain and the United States, involves intervening in the fertilisation process to remove faulty mitochondrial DNA, which can cause inherited conditions such as fatal heart problems, liver failure, brain disorders, blindness and muscular dystrophy.
It is feared by critics who say it effectively allows "designer babies" because it would involve implanting genetically modified embryos into women.
Read: One mom, 12 babies
Last February Britain set out draft legislation that, if passed, would make it the first country to allow the technique.
In their letter, groups including the U.S.-based United Mitochondrial Disease Foundation, the Australian Mitochondrial Disease Foundation and groups from France, Germany, Britain and Spain, described mitochondrial disease as "unimaginably cruel".
Absolute confidence
"It strips our children of the skills they have learned, inflicts pain that cannot be managed and tires their organs one by one until their little bodies cannot go on any more," they wrote.
They said they were aware "that no novel medical procedure is without risk", but had "absolute confidence" in scientific panels that have examined the technique.
The issue of mitochondrial donation has been scrutinized by several expert panels in Britain, including the Human Fertilisation and Embryology Authority and the Nuffield Council on Bioethics.
Read: UK plans world's first '3-parent' IVF babies
Many scientists and medics have welcomed the government's decision to push ahead.
Jeremy Farrar, director of the Wellcome Trust, said it would "allow the law to catch up with public and scientific opinion".
"Parents who know what it means to care for a sick and suffering child with mitochondrial disease are the people best placed to decide ... whether mitochondrial donation is right for them," he said. "It is time to allow them to make that choice."
Read more:
Three-parent fertility treatments?
Fertility treatment may impact IQ
Births from fertility treatments reach 5 million
Image: Woman undergoing fertility treatment from Shutterstock
