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Draft regulations on mitochondrial donation published

03 March 2014

By Patricia Cassidy

Appeared in BioNews 744

The UK Department of Health has published draft guidelines for the use of new techniques to prevent mothers passing on serious mitochondrial diseases to their children. The guidelines will be the subject of a three-month consultation.

The techniques, for use in IVF, use a small amount of DNA from a female donor which is passed on to the child and have been referred to as 'three-person IVF' by the press and 'mitochondrial transfer' or 'mitochondrial donation' by specialists. They are currently being evaluated by researchers and are not yet allowed to be used in humans.

A public consultation by the Human Fertilisation and Embryology Authority (HFEA) last year found that overall, the British public supports mitochondrial donation treatments being used, although that approval is not universal (see BioNews 698).

The techniques are controversial because they involve three people having genetic links to any baby. Also the donated DNA that would be passed to the child would also be passed on to subsequent generations.

One in 200 babies in Britain is born with a serious mitochondrial disease. These conditions can affect many organ systems and can be fatal. They arise due to mutations in the small amount of DNA contained in the mitochondria, the cell's 'batteries' that provide energy.

Mitochondrial donation techniques seek to replace all the mitochondrial DNA with that from a donor. As mitochondrial DNA is separate from nuclear DNA and principally controls energy generation in cells it is thought that any child born via mitochondrial transfer would not inherit any of the donor's physical or psychological characteristics.

Dame Sally Davies, chief medical officer for England, said: 'Allowing mitochondrial donation would give women who carry severe mitochondrial disease the opportunity to have children without passing on devastating genetic disorders. It would also keep Britain at the forefront of scientific development in this area'.

Senior biomedical researchers have voiced support for the Government's decision to move towards regulation of the technique. Professor Jeremy Farrar, director of the Wellcome Trust, told the Telegraph: 'Once further public consultation on the detail of these regulations is complete, we urge the Government to move swiftly so that Parliament can debate the regulations at the earliest opportunity and families affected by these devastating disorders can begin to benefit'.

However, Dr David King, director of the pressure group Human Genetics Alert and a critic of the techniques, told the newspaper: 'The techniques have not passed the necessary safety tests so it is unnecessary and premature to rush ahead with legalisation'.

Under the draft regulations, donors would remain anonymous; however, if a 16-year-old or older asks the HFEA if they were born after mitochondrial transfer, the authority is required to inform them.

Mitochondrial transfer would only be allowed when there is a 'significant risk' of disability or serious illness.

The consultation will end on 21 May 2014.

SOURCES & REFERENCES
The Guardian | 27 February 2014
 
Department of Health | 27 February 2014
 
Department of Health (press release) | 27 February 2014
 
ITV News | 27 February 2014
 
Daily Telegraph | 27 February 2014
 

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