UK Welcomes Eight Healthy Babies Born Using Three People's DNA: How Does The New Treatment Work?

A reassuring experimental technique for researchers, eight healthy babies are born in Britian free from genetic disorder.

After performing a groundbreaking procedure that creates IVF with DNA, doctors in the UK have officially announced the birth of eight healthy babies.

The experimental technique was conducted using three people's DNA to prevent mothers from passing incurable genetic disorders to their children.

Reassuring Experimental Technique For Researchers

Reportedly, the babies born to seven women include four boys and four girls, and one set of identical twins.

So far, they have no sign of mitochondrial disease, which they were at risk of inheriting. "All 8 children were healthy at birth, with no or low levels of mtDNA heteroplasmy in blood," the New England Journal of Medicine states (NEJM).

Prof Dough Turnbull, who was part of the research team spending more than two decades developing the procedure, claims born of eight healthy babies via IVF is reassuring for researchers. He told a leading media outlet, "You are inevitably thinking it's great for the patients and that is a relief."

Why This Method Is Crucial To Prevent Genetic Disease?

The DNA found in the nucleus of your cells, inherited from your mother and father, makes who you are. But there's also DNA found outside of the cell's nucleus in the structures called mitochondria.

And dangerous mutation can cause several health risks in children, which can lead to poor growth, seizures, migraines, respiratory problems, etc.

Who Is The Treatment For?

The new treatment is called pronuclear transfer, which was approved in the UK in 2015.

Pronuclear transfer (PNT) is mitochondrial replacement technique meant for women who are at high risk of passing mitochondrial diseases and cannot be used and cannot use standard genetic testing to avoid them.

How Does The New Treatment Work?

• To perform the technique, eggs are taken from the mother and a healthy female donor.
• Now, both eggs are fertilised with the father's sperm in the lab.
• After about 10 hours, scientists remove the nucleus that holds most of the genetic material from both eggs.
• Mother's nucleus, which has healthy mitochondria, is inserted into the donor's egg.
• Following this process, it allows an embryo to develop with DNA from the mother and father, but mitochondria from the donor.

"For women considering treatment through assisted reproductive technology to lower the risk of serious mtDNA-related disease in their offspring, options include preimplantation genetic testing (PGT)," NEJM explains. "However, for women with high levels of mtDNA heteroplasmy or homoplasmic pathogenic mtDNA variants, PGT is not an option, and mitochondrial donation has been considered as a possibility."