Human Fertilisation and Embryology (Mitochondrial Donation) Regulations 2015

Debate between Lord Tebbit and Baroness Hollins

Tuesday 24th February 2015 Lords Chamber

[Baroness Hollins]

Again, I do not think that is the point that I am trying to make. Maybe I am not being quite clear enough.

[Lord Tebbit (Con)]

Would the noble Baroness not agree that there is only one absolutely safe way to ensure that this disease is not handed down from generation to generation, and that is for those women who are carriers of the genetic fault not to have children? That may be an appalling thing for me to have said, many people would think, but there are many people who for various reasons cannot have children.

[Baroness Hollins]

That is a good point.

Supporters of the techniques simplify the impact of these proposed procedures by saying that mitochondrial donation is like changing a battery. Their argument runs that mitochondrial DNA relates only to power production in the cell but does not affect the DNA, which encodes our characteristics, and therefore that exchanging mitochondria should not be seen as ethically significant. In a debate last September, the honourable Member for Havant in another place summed up this position well when he said that the techniques represented,

“a change in the membrane of the cell so that the battery function continues, but it does not affect human identity even by 0.1%. That is why I do not believe that there is an issue of dignity or integrity of the individual”.—[Official Report, Commons, 1/7/14; col. 98.]

The Government underlined how important this point was to their policy in their consultation response when they said:

“Most importantly, mitochondrial donation techniques do not alter personal characteristics and traits”,

of the person, the implication being that if this technology were to affect personal characteristics then the Government would withdraw their support.

So the ethics and the safety of the science are inextricably linked. Unfortunately, it seems that we are still at the beginning of understanding the complex interactions between mitochondrial and nuclear DNA. Some recent empirical studies on animals have suggested that mitochondria indeed affect characteristics, and that there is a relationship between mitochondria and memory, temperament and behaviour. As a psychiatrist, I see temperament as a personal characteristic, and I think it was for that reason that the New Scientist withdrew its support for the techniques. In an editorial last year it said that,

“we may have seriously underestimated the influence that mitochondria have. Recent research suggests that they play a key role in some of the most important features of human life”.

I note that the Government’s own consultation document acknowledged the diversity of problems associated with mitochondrial disease, including learning disabilities, neurological problems, autonomic dysfunction and dementia, and that every person’s symptoms are different. The Government’s response to the consultation concluded that they do not alter personal characteristics. One problem that I have with the current proposals is the idea that mitochondria are mere batteries, which is what has been quoted in so many of the papers that have been circulated to Peers. The New Scientist leader comment in September last year said that most debate around the issue had worked on the assumption that mitochondria were simply cellular powerhouses. However, given their newfound influence over our bodies, the implications of this technology may be far more radical than we have assumed. The leader made the point that it seems that mitochondria, far from being passive power plants, influence some of the most important aspects of human life, from memory and ageing to combating stress and disease. They even have influence over the DNA in your cell nuclei and change and evolve during your lifetime.

I have been inundated by emails, as I am sure we all have, from people who are concerned. I had an email from a cell biologist working in California, Professor Paul Knoepfler, who contributed to the HFEA’s call for evidence. He said that,

“mitochondrial transfer might be proven safe, but then again it might not. From my perspective as an impartial (scientific) observer … putting myself at some risk by publicly opposing this technology … its approval at this time would be a … risky gamble with children’s health and lives”.

He says that many scientists have told him that privately they share his concern.

I have one question for the Minister: would he withdraw his support for the regulations if he thought that the role of mitochondria was more than mere power production? Would he then support the amendment of the noble Lord, Lord Deben, for further consideration of this matter?

Until recently, the Wellcome Trust had on its website a statement suggesting that the procedure would be able to go ahead in late 2014, when the science was ready. But is the science ready? I am not quite convinced yet. As noble Lords may be aware, I chair the BMA board of science, which has not yet discussed this matter. I have discussed my support for the noble Lord’s amendments with senior officers of the BMA, and perhaps I may clarify the BMA’s position. Its support for the principle of such reproductive technologies has been expressed as an ethical principle to allow the cautious exploration and development of such technologies. I have concerns about the timing of these regulations, and for that reason I welcome the opportunity to debate them presented by the noble Lord, Lord Deben.