UK’s ‘Three-Parent Babies’ Offer Hope Against Fatal Mitochondrial Diseases
A revolutionary technique is battling deadly mitochondrial diseases that can kill newborns within days. Though fewer than five babies have been born using this method, details remain tightly under wraps.
What Are Mitochondrial Diseases?
Mitochondrial diseases cause severe brain damage, muscle failure, heart problems, and blindness. These incurable conditions are passed exclusively from mother to child through faulty mitochondria.
How Does Mitochondrial Donation Work?
Scientists devised a clever twist on IVF called mitochondrial donation treatment. This involves swapping out defective mitochondria with healthy ones from a donor egg, giving babies DNA from both parents plus a small slice from the donor. Crucially, this donor DNA only affects cell powerhouses and does not make the donor a ‘third parent’.
The UK legalized the technique in 2015, with newcastle/" title="Newcastle" data-wpil-keyword-link="linked">Newcastle scientists leading research. But actual births in the UK have been slow. The very first baby using the method was born to a Jordanian family in the US back in 2016.
Fewer Than Five Babies Born Using UK Technique
The Human Fertilisation and Embryology Authority (HFEA) revealed fewer than five babies have been born via this method by April 2023. They’re keeping numbers secret to protect family privacy, following a Freedom of Information request.
Sarah Norcross, director of the Progress Educational Trust, said: “News that a small number of babies with donated mitochondria have now been born in the UK is the next step, in what will probably remain a slow and cautious process of assessing and refining mitochondrial donation.”
Experts still debate the long-term success and safety. Professor Robin Lovell-Badge of the Francis Crick Institute wonders if these babies will stay clear of mitochondrial disease and what risks might appear later. One worry is “reversion,” when defective mitochondria may multiply over time, potentially bringing back disease.
Initially, experts hoped 150 babies a year could be born using this tech in the UK.
Hope for Families Facing Devastating Illness
These so-called “three-person babies” mark a huge leap in reproductive medicine. With further research and tweaks, this groundbreaking procedure could finally give affected families a chance to have healthy children and break the cycle of mitochondrial disease.
