Human Fertilisation and Embryology (Mitochondrial Donation) Regulations 2015

Lord Winston Excerpts

Tuesday 24th February 2015 Lords Chamber

[Lord Winston (Lab)]

I wonder whether I can help my noble friend Lord Patel. Does he agree with me that there were very few available data for the first in vitro fertilisation babies, and that that was a step in the dark, as were pre-implantation diagnosis and sperm microinjection? Before he concludes his speech, would my noble friend be kind enough to answer an important question asked by the noble Lord, Lord Deben, about the possibility that we might be making infertile children? Was that not the accusation made when infertility was treated by in vitro fertilisation, and was there not a widespread fear at that time, too, that we would be making infertile children?

[Lord Patel]

I thank my noble friend for that interruption. It was worse than that: it was suggested not only that those children might be infertile, but that they might be half monsters of some kind. To answer the question raised earlier about the HFEA’s evidence—yes, it did ask, and the evidence was verbally produced. The reason why it is not published is that anything that is published, even in the form of an extract, cannot then be published in a reputable journal. I know that that evidence has now been sent for publication.

To go back to the subject of the evidence requested, if we were to go down that road and do those experiments, what would be required in the human population is the deliberate creation and destruction of many hundreds, if not thousands, of embryos—to prove a point that does not require proving. Hundreds and thousands of human embryos have already been tested and found to go to a blastocyst state, and I hope my noble friend Lord Winston will agree that if we see them in that state, the embryo will be satisfactory. He nods slightly.

The alternative would be human population genetic studies to fulfil that requirement for evidence. What that shows is that exchange of mitochondrial DNA haplotypes by normal reproduction should reveal combinations that are deleterious. Human population genetic studies will do that. Such studies include genome-wide association studies and whole genome sequencing projects looking at many specific diseases and syndromes. Those kinds of studies will be required. They do not require embryos to be created, nor is it necessary to do these studies before this treatment is available.

I know I am going on a bit, but other points were made. If there are points about epigenetics et cetera, those are also spurious and have no basis in science.

Let me go now to something that the noble Lord, Lord Deben, mentioned twice: the Chinese example. The technique that was used in the United States and in this Chinese example is called cytoplasmic injection. No doubt the noble Lord, Lord Winston, is more familiar with it from his work than I am. It is a technique that is not allowed in the United Kingdom. That is the first point. It is completely different in design and intent from what we are talking about in mitochondrial replacement; it is nothing to do with it.

What was done in China was a cytoplasmic injection not for replacing mitochondria, but for infertility treatment in older women. That was also the case in the United States; it was an extra cytoplasm with possible mitochondria in older women, where both are at risk of producing chromosomal abnormality. In China it was used in only one study, which was conducted by an American, Professor Grifo. They inserted five embryos. We do not allow that in the United Kingdom because of the risk of multiple pregnancy. It resulted in a multiple pregnancy. They then tried to reduce the number of foetuses by injecting one of them to reduce the number of foetuses from three to two. I do not know what kind of technique they used—

[Lord Winston]

Dangerous.

[Lord Patel]

“Dangerous”, my noble friend says. It killed the other two and resulted in a premature birth. They never published this, despite being asked if there was a publication. It is wrong to say that the HFEA did not ask them; the review panel did. Professor Grifo sent a letter saying that, in his view, all the foetuses were normal but they died of prematurity. What they died of was an obstetric botch-up. It had nothing to do with what we are talking about today. It was a completely different technique. We should dismiss it completely. It would be wrong to put any credence on it and say that it is a good reason why we should not do this.

I could go on about other safety aspects that were brought up, but let me close by saying that hitherto the science has gone as far as it can in thousands of animal experiments that have resulted in normal pups. In human embryos it has gone as far as it can to produce normal embryos, which, if implanted, there is no reason to believe would not develop into normal, healthy babies who would not carry the defective mitochondria. All we are doing today is allowing the regulator henceforth to decide, on a case-by-case basis, to issue a licence to those clinics for those mothers who request this treatment, and which are allowed to use both techniques that we currently know are safe while further research goes on. None of us stops researching: the noble Lord, Lord Winston, still carries on researching; the noble Lord, Lord Kakkar, still carries on researching. If a chance was given, the noble Lord, Lord Walton, would still carry on researching. We do not stop researching; that is the nature of medicine and of academic medical science. I hope that we will pass these regulations.

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[Baroness O'Loan (CB)]

My Lords, I very much support the Motion that has been tabled by the noble Lord, Lord Deben, for the reasons he very articulately expressed. The Minister has reassured us significantly about these regulations, but he did express many of the uncertainties that remain. In moving his Motion, the noble Lord, Lord Deben, talked about uncertainty. The noble Lord, Lord Patel, gave us graphic details of the uncertainties of the two processes that are proposed, which may result in increased risk of chromosomal defects. In the light of all that uncertainty, how can it be right that your Lordships’ House be asked to make a decision of this magnitude before the conclusion of all the necessary research?

I want to talk briefly about one issue that relates to the protection of women’s health. We are told that these proposals are all about advancing women’s rights, and yet it seems to me that we are at risk of overlooking one very important matter in relation to which these procedures plainly do not advance women’s rights. That is the repercussions of the increased demand for donor eggs for the women who donate the eggs. The requirement for more eggs is a consequence of scientific development, and that is widely accepted. A Nuffield Council on Bioethics report looked into the ethical issues around mitochondrial donation and stated:

“One of the major barriers mentioned by scientists when assessing the potential for cell reconstruction techniques to become treatments is the fact that many more egg donors will need to be found to undertake the research required in order for the safety and efficacy of PNT and MST to be established, and if therapies are to be provided in future. A shortage of egg donors is an acknowledged problem in respect of donations for reproduction, and it is not yet clear whether egg donors would be more likely to come forward”.

[Lord Winston]

I am grateful to the noble Baroness for giving way, but I do not think that she speaks from experience. Sadly, I have to say that I do speak from experience. I have run a very large infertility practice for a very long time, and we found donors very easily when it was concerned with these sorts of serious conditions. There was never a problem about finding donor eggs for this kind of problem.

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[Baroness O'Loan]

I thank the noble Lord for that intervention. I am not arguing against this process; I am arguing against the introduction of these regulations at this time in the absence of sufficient knowledge and protection. We have to look at the factors, as the noble Lord, Lord Alton, said. Being paid to donate one’s eggs constitutes a very serious issue for women who are in poverty and who will do it as a way of raising money, possibly even to look after their own children. We need to provide protection for such women.

In conclusion, we should not hasten ahead without putting in place clear and comprehensive systems for monitoring the outcomes of all controlled ovarian hyperstimulation treatments, including those treatments that would result in the generation of eggs to facilitate PNT and MST. In this context, I simply ask that we proceed more carefully and that we back the Motion moved today by the noble Lord, Lord Deben.

[Lord Winston]

My Lords, I declare an interest in that it was my scientific group which started pre-implantation diagnosis—the first attempts to diagnose genetic diseases in embryos in families who have these fatal, sad genetic flaws in them. I congratulate the Minister on his absolutely balanced and fair speech. From time to time, we have not agreed, but I think that his care, compassion and courtesy are deeply appreciated by the whole House. I also congratulate the noble Lord, Lord Deben, on his very clever speech. I do not agree with what he said and I hope that, at other times, we can see why we disagree. I accept that he is talking with deep conviction, but I think that we have already sorted out most of his objections, both the legal and the difficulties of side-effects.

[Baroness Scotland of Asthal (Lab)]

My Lords, before my noble friend goes any further, I say to him that there are real differences in legal opinion. I do not think that we have quite sorted them out yet.

[Lord Winston]

I am very grateful to my noble and learned friend for that.

I want to do something which I have done previously in debates of this kind, which is to talk from personal experience. I may be one of the few people in the House who have sat with an endless number of parents who have a genetic disease in the family, have listened to their problems and have seen the kind of dilemma that they face. I am reminded of the child Jeremy “Martinez”—forgive me if I change the surname, but I do not have approval to give the surname of that patient from some time ago. We were doing in vitro fertilisation and pre-implantation genetic diagnosis in the 1980s, and the first babies, who are now 25, were born in 1990. At that time, we were looking at the very common genetic disorders. It is interesting to consider that there is a vast number—too many, some of us think—of Members of this House. At least 40 of you, on mathematical probability, will carry the fatal genetic mutation for cystic fibrosis. That is very common indeed and much more common than the problem with mitochondrial disease, even though we are beginning to see that it is becoming rather more common as we get better molecular techniques.

What is very clear, and it is very important because it has not been stated, is that the number of families who will be of child-bearing age when a mitochondrial disease is diagnosed will be very few. That is important because we are not talking about a large number of people; we are talking about a small number, but they have a definite problem for which they need some desperate solution. They are prepared to do whatever they think is best for their families, with informed consent.

In the case of Jeremy, he was a bit slow to grow, but by nine months he could not lift his head. He started to vomit; he had diarrhoea; he then progressively developed muscular weakness and started to get epileptic fits. These fits would often go on all night; this child screamed with pain and was uncontrollable; eventually, having gone both blind and deaf, with severe mental problems with his brain, he died at the age of two. There was no treatment. His mother came to see me to ask if there was any possibility that she might have some screening of her embryos in the future. This was in 1989. Certainly, Alan Handyside and I had discussed the possibility of looking at mitochondrial disease, but we did not have the molecular techniques at that time to have any chance of being able to screen an embryo. It is true that that screening has now happened and can be done; indeed, there is a very interesting report from Newcastle University showing how that can be done in some cases. However, it is not always satisfactory, for the reasons that the noble Lord, Lord Patel, stated.

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[Lord Patel]

I think that the noble Lord was asking him to reply to my comment. He is quite right that China has used pronuclear transfer techniques, but the disaster was upsetting to me.

[Lord Winston]

I am very concerned that the noble Lord, Lord Patel, might get into trouble with the Whip sitting on the Front Bench. I am always in her bad books, and I would not want to allow him to be in her bad books as well.

Let me answer the noble Lord, Lord Alton. It is true that, two years ago, I said that it was unpredictable; of course, these things are unpredictable. In the context in which I was speaking, that was correct. To be fair, however, the noble Lord, Lord Alton, knows that, with the case of Jacques Cohen in New Jersey, 17 babies were born after mitochondrial transfer. Therefore, there has been some other evidence—other than that evidence from China—that suggests that this is not quite as daft as proposed. Added to which, of course, in two years, a huge amount of research has been done by our colleagues in Newcastle. They have been working flat out on a whole range of tests which, I think, have made a very big difference. Since the statement that I made in the House, three different committees have looked at the safety.

Science does not have the truth; we have a version of the truth. We have to interpret what we can as best we can.

I deeply respect the noble Lord, Lord Alton, as he knows very well. We both come from a very strong view about what is the right thing to try to do wherever possible. However, I feel here that, apart from the issue of preserving healthy life, if we decide not to vote for the amendment of the noble Lord, Lord Deben, we are doing something really important. We are expressing our concern—our compassion—as a House for people who are faced with an invidious and horrendous choice.

Under those circumstances, given that this will be a limited procedure affecting very few people, it would be utterly wrong for this House to turn down the democratically elected Chamber and not to support what the Government propose.

[Lord Walton of Detchant (CB)]

My Lords, at the outset, I have to declare two interests. First, I am the honorary life president of Muscular Dystrophy UK, which, along with the Wellcome Trust and other organisations, has been sponsoring and funding some of this research. Secondly, I have to say that I have an avuncular interest in the department in Newcastle upon Tyne, because Professor Douglas Turnbull, who now holds the chair of neurology in that university, holds the chair which I held 32 years ago.

I say just in passing to the noble Lord, Lord Deben, to whom I listened with the greatest possible interest, that he may not remember that I was the neurologist on the Southwood working party, which advised his department on BSE and produced a report which ultimately led to the disappearance of BSE and its human form, Creutzfeldt-Jakob disease, so he does not need to lecture me about the precautionary principle.

There is one sensitive matter which I feel that I must raise at this stage. I am a lifelong member of the Methodist Church, although I at present attend an Anglican church. I know full well that from the very first day that the whole issue of human fertilisation and embryology came before this House, it was bitterly opposed by the Roman Catholic Church. I do not suggest to either the noble Lord, Lord Deben, or my noble friend Lord Alton that their adherence to and strong faith in the Roman Catholic principles has in any way influenced their attitude to the regulations; but at every stage from the first regulations to allow human fertilisation and embryology to take place, they have been bitterly opposed.

I must confess that I did discuss the whole issue of the status of the human embryo with an old friend, the late Cardinal Hume, whose father was a professor of medicine in Newcastle, Sir William Hume, who taught me briefly when I was a medical student in the early 1940s. Cardinal Hume and I discussed the whole issue, and I told him that I simply could not accept what the Roman Catholic Church has now decreed. Many, many years ago, St Thomas Aquinas said that life did not begin until the foetus was capable of independent existence outside the womb. It was a Pope in the 19th century who decreed that life began at the moment that the sperm entered the egg.

I said to Cardinal Hume that I really could not believe that a small bundle of cells carries the same status in society as a mature adult, and that that was something with which I profoundly disagreed. We discussed it and regularly went on to have a powerful exchange of views and then to decide that we could not agree, but then moved on to discuss a matter of much more mutual concern: the fortunes of Newcastle United Football Club. When, in 1980, the city of Newcastle decided to create a number of new honorary freemen to celebrate its 900th anniversary, among them were me as dean of medicine, Cardinal Hume and Jackie Milburn, the former England and Newcastle centre forward. Cardinal Hume said that it was the greatest day of his life: all his life he had been waiting to meet Jackie Milburn.

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[Lord Winston]

Before the noble Lord does that, I wonder whether he would consider this point very seriously for a moment. If we delay this measure, we will, as I am sure he understands very well, be committing a number of people to terminating pregnancies. Not only will we be terminating their pregnancies but those women will experience a number of lost pregnancies—a loss of life. Is that what the noble Lord really wants in pressing this amendment?

[Lord Deben]

I do not want to prolong this but the fact is that the human embryology committee and the terms under which it can give the permissions will take longer than it would take to have the committee that I am calling for in my amendment. It would not hold matters up for one moment. However, I think that the House wants to go to a vote.