UK to allow babies from three people
bbc.com
bbc.com
Instead, defective mitochondria are being replaced with mitochondria from a healthy donor. This technique is only valid for diseases involving defective mitochondria.
The mitochondrial DNA is responsible for very very little of the genetic material that defines who a person is, essentially limited to how effective the mitochondria are at their job. This is around 0.1% of the total genetic code.
Mitochondria are organelles in our cells that break down molecules to provide energy for the cell, in the form of ATP. They have their own genetic code completely distinct from the host cell's DNA.
The mitochondria are replaced in either the egg OR in the embryo. In both cases this is done by removing the nucleus (containing the cell's genetic material) from the cell that has defective mitochondria and transferring it to a donor cell with healthy mitochondria. The donor cell's nucleus is completely removed.
The mitochondrial DNA is passed down from the mother alone, whilst the DNA in the embryo is formed from both the mother and father. For this reason mitochondrial DNA has much less genetic diversity. Mitochondria 'reproduce' by binary fission which is similar to bacterial cell division and produces little variation in its genetic code, whilst egg and sperm go through meiosis allowing the genetic code to be mixed.
Opposition seems to be coming from two camps.
- Those who don't like the destruction of the donor embryo (when that method is used),
- Those who think this is the start of ever more invasive genetic modification of humans, or so called "designer babies"
The relationship between them and their host cell almost seems similar to ant-fungus mutualism.
"The remaining ~1500 mitochondrial proteins are encoded in the nucleus, including all proteins needed for replication and expression of the small mtDNA genome (Falkenberg et al., 2007)"
from http://ac.els-cdn.com/S0092867409012458/1-s2.0-S009286740901...
Well...this is the start of ever more invasive genetic modification of humans.
> "But one thing is for sure, once this alteration has taken place, as someone has said, once the gene is out of the bottle, once these procedures that we're asked to authorise today go ahead, there will be no going back for society."
Replacing mitochondria is very different to designing genetic traits, either through careful selection of eggs and embryos, or splicing, and I think that conflating the two is silly.
If laws were introduced that would allow modification of the primary genetic material that debate would be had then. This law will not shoo-in laws that provide for that kind of genetic modification.
Can't we just extend whatever laws with the addition of this specific treatment? Anything else has to be looked at on a case by case basis.
Cue people shouting about how politics are slow and killing people while also forcing politicians into making medical judgements that they may not be qualified for, further increasing the chance that they become the playthings of lobbyists who "do their homework for them".
I'm utterly divided on this issue by the way, just noting the inevitable discussion that follows your logic.
> If the NHS starts giving out vaccines today they'll be giving out botox in a few years time, right!?
People can already (though perhaps to a lesser extent) have designer bodies, if they can afford it, thanks to modern medicine. Genetic medicine doesn't seem to introduce a fundamentally new problem.
Besides safety, are there any issues with that?
The implication is that the widespread but costly availability of genetic modification in tandem with free market capitalism would necessarily form such an enormous social wedge.
I haven't thought about the issue enough to agree or disagree with the theory, but I am stating it here as a potential answer to your question.
Absolutely nothing we can do artificially will have as great of an impact than genetically gifted individuals having children together ... which is already happening and has been happening for eons ... I mean, that's what evolution is. The smart get smarter, the fast get faster, the strong get stronger, and the inferior disappear from the gene pool.
If anything, genetic modification will allow the less gifted to pool funds and improve their own gene pool in a way that was simply not possible before.
Now, I think all of this is futile, for reasons touched in GATTACA. It is my absolute most favorite movie. Watch it again =)
> Absolutely nothing we can do artificially
> will have as great of an impact than
> genetically gifted individuals having
> children together.
We already have technology that's good enough to improve on that, e.g. splicing out a gene known to cause a disease from one of those parents.
Yes. Because what really matters is the restriction of the pool from which those random genes are chosen through mate choice. The overwhelming majority of the time you're randomly choosing between identical genes.
When you start playing with genetic engineering, the whole world is your oyster and your choices are liable to be far worse than random chance among a carefully curated pool. I think genetic engineering will be fantastic for curing specific ailments, but will be a total flop when it comes to creating super humans. Natural selection will always do it better.
That stopped some time ago for humans, at least in industralized countries. Modern medicine, long periods of peace and (eventually) welfare provisions have taken care of that. This is a further step in that direction.
Evolution works over huge numbers, both in life and death; by effectively reducing the death-count around the globe, we're progressively abolishing it for humans.
> If anything, genetic modification will allow the less gifted to pool funds and improve their own gene pool in a way that was simply not possible before.
I fear that "pooling funds" could signal a mischaracterization of poor people as "less gifted", which is absolutely not the case. "The poor" are the ones who have historically improved our genepool, by constantly churning huge numbers of children who would then proceed to fight to death (often literally) for survival and success. "The rich" have always opted for in-breeding, low numbers and social welfare among their peers, resulting in weak genes and lots of hereditary diseases surviving the centuries. In this sense, "the poor" have absolutely nothing to gain from genetic manipulation: children are their only resource and they will continue to produce as many as they can, resulting in a stronger and more variegated gene pool without having to add anything to the process.
The GATTACA scenario is real in the sense that a certain mindset is common around modern elites, a view that the rich must be somehow superior to the poor (smarter, healthier, harder-working, etc) otherwise they wouldn't be where they are. Policies like Tony Blair's suggestion that "fat people should pay more for healthcare" are appallingly neo-darwinistic, but they've also been mostly rejected out of a sense of human decency. I expect this will continue to be the case; as a lot of modern history reminds us, it takes very little to send entire populations back to the Middle Ages, and genetic discrimination would light a very powerful fuse.
If you were saying that the mutated mitochondrial genes were a sign of otherwise inferior genetics, gross.
Evolution works over huge numbers, both in life and death; by effectively reducing the death-count around the globe, we're progressively abolishing it for humans.
That's a common argument, but isn't it putting too much emphasis on death as a driver of natural selection? I mean, a person who lives 80 years without ever having children is as much an evolutionary dead end as a bird who dies before he gets to reproduce.
As long as there are genetic factors that lead to some people have more or less children, evolution is still at work, even if they both live to be the same age.
That's not "what evolution is". See [1] for why this is a fundamentally wrong way to think about it.
[1] http://evolution.berkeley.edu/evolibrary/misconceptions_faq....
This is the actual quote:
> genetically gifted individuals having children together ... which is already happening and has been happening for eons ... I mean, that's what evolution is.
That is exactly what evolution is. The fit only mate with other fit individuals, accelerating the spread of traits which make them fit.
With regard to my other statement:
> The smart get smarter, the fast get faster, the strong get stronger, and the inferior disappear from the gene pool.
The burden is on you to prove that intelligence, speed, and strength aren't being heavily selected upon in the human population. I made it as an off-hand comment, but I think it's pretty spot on regardless.
I'll say it again: "...genetically gifted individuals having children together" and "The fit only mate with other fit individuals" is not what evolution is. Forms of life (including humans) have sometimes evolved strategies that try to allow them to select mates based on fitness, but the emergence of these strategies also allows those that use bluff and deception to gain an advantage by deceiving fitter mates into mating with them. "Fitness" here isn't some linear value, its multi-dimensional.
Also, the very idea of individuals being "genetically gifted" is fairly meaningless. In a sense, every living human is genetically gifted because we possess genes that allowed every one of our ancestors over the last 2.4 million years to survive long enough to successfully reproduce. Most of the ones that tried didn't manage that.
Survival of genes (not individuals) is what counts. Evolution doesn't have a purpose and it doesn't result in progress ("accelerating the spread of traits which make them fit", as you put it). I just tried to point that out.
Which is still a great warning to heed, but the hero of the film is the hero because he proves that the genetic screening was wrong about him.
The current lottery in genetic endowment that nature provides us is horrendously unfair. I expect that fixing problems is going to be a lot easier than creating super-human abilities so I expect that genetic modification will tend to make life much fairer for the foreseeable future.
No genome has changed at all.
You look the blocking of websites.. It started with child porn which everyone thought was acceptable but then the same legislation was used against piracy websites. Now Britain has an internet filter...
Before there was a red line in genetics. Allowing this procedure really blurs that line and I worry this is just the start of a slippery slope..
As for how much it helps parents. It doesn't help many with their first child as the parents are often not aware they are carriers of conditions. For subsequent children adoption was always available.
Unless it affects reproduction ;)
I think it would be cool if you could clean up your DNA removing all the nasty genetic diseases you could pass on to your children.
I wouldn't really change the appearance of my child though.
Plus I would keep most of the original genetic material just fix the bits that are detrimental to a long and healthy life.
there will always be people who have an advantage over others, the majority simply comes from where you were born followed to whom to you were born too.
The real fear is likely that some will make choices that are not politically correct, it is certain this would happen in non Western countries.
Consider the ethical implications of the job they pay you to do. Always. Who will be benefiting from my work? Who might be harmed by it? Can I trust my employer to protect--or even just accurately represent--my own interests?
Do not take jobs that grant more power to the powerful at the expense of the weak.
My litmus test for human gene-mod technology will be whether I will ever be able to repair my phi-GULO pseudogene, to restore the mammalian ability to synthesize ascorbates (vitamin C) in the liver, without needing to get permission from anyone to do it, and without paying more than a year's salary or using more than one garage of space on the equipment. If I can do that, this particular genie cannot be re-bottled.
And you can bet I'd be selling CKGGRAKDC-GG-D(KLAKLAK)2 under the table, too.
If a girl has 1000s of male suitors perhaps they would need to start paying a dowry...
Not that I agree with choosing the sex of your child for non medical reasons.
It destroys our existing concept of the human experience. Is it silly to want to live among "natural" children? Then explain me why it's not silly to want to continue the species at all?
Just like we look down at the people who fought against the smallpox vaccine because it was unnatural.
What does this phrase mean?
As I was trying to express above, it seems strange to me to imply somebody is irrational for wanting "natural" kids, but not likewise call someone out for caring about creating "their" progeny at all.
What I'm trying to do is get you to consider the full implications of not caring about whether things are "natural". What if we not only swapped around genes, but edited genes directly to cure things? What if we added enhancements? What if we completely genetically engineered babies from scratch and called them "our children", would that be okay with you? What if we made AI enabled robots and called them "our children"? Why not... just not have children at all anyway? At what point do you draw the line, and by what principle? To say that "natural" humans doesn't matter raises the question of why "humans" matter at all in the first place.
I raise the issue of the "human experience" because that's the paradigm I live in, and I wonder what I'm going to do without it. I suspect that anybody who cares about "the next generation" but doesn't care if babies are "natural" also thinks they're living within the "human experience" but they haven't thought it through. I think that if you don't care about "natural" babies, you might as well go all the way and be an anti-natalist. I'm actually quite open to that as well, at least it's consistent.
BTW one way of avoiding genetic diseases without genetic engineering would be genetic screening. Such things exist as I understand, I met a guy who said he worked for a company that did this sort of thing. Certain couples just avoid having children. Maybe they can adopt. Is that unfair to them that they don't get to have "their" children? Again, why does that even matter if you don't care about things being "natural"?
Thank you for continuing this conversation so late after the article was posted, btw. Now that I've laid it all out I wonder what ideas you have in response.
All of these things will happen in the (potentially near) future. The world will be much weirder, but also better.
I mean you can argue that people shouldn't reproduce at all, but good luck convincing everyone of that any time soon. A significant percentage of people believe even having such a view is horribly immoral (it's associated with eugenics and other bad things) and that reproduction is a basic human right.
So if we are going to be reproducing, there is nothing wrong with removing genetic diseases.
I wonder why people's willingness to accept is your standard for what is acceptable. I would think convincing people of having designer babies, while less extreme, has the same hurdle.
> we are going to be reproducing
And again, "we ... reproducing" seems a little strange here if you're willing to accept a future with robotic "offspring" as an extension of your view. It's more like "we are creating new life and bestowing our culture onto it". Is that what people really want? Is there any point to it?
Monsanto are an awful company, and a very large part of that is down to their maximalism, rather than the GMO part.
Continuing to conflate the two issues just does one's own argument a disservice (it's a strawman) while also reinforcing the maximalists' position that GMOs have to be patentable.
I don't think it will make them happier though.
Like me.
But there's a big difference between not actively endorsing a procedure like this and making it illegal.
My argument is that one's ability to reproduce should not be guaranteed by the state, and therefore the state should not create laws that overtly or inadvertently sanction the genetic engineering of eggs or embryos to that end.
This law does precisely that.
Ok, but even taking the first part of that as given I don't understand why the second part follows.
I don't think one's ability to go on holiday should be guaranteed by the state, either, but that doesn't mean plane travel should be illegal.
"The method, which was developed in Newcastle, should help women like Sharon Bernardi, from Sunderland, who lost all seven of her children to mitochondrial disease."
Reasoning:
Sharon Bernardi hasn't been able to reproduce naturally without this "method".
But the UK is going to make this method legal - and because its healthcare system is publicly funded the UK government (and thus the public) will also pay for the implementation of the method.
This represents an example where the state is making a guarantee - a formal promise or assurance - that it will pay for citizens that normally couldn't have children to be able to have them.
From the article:
Prime Minister David Cameron said: "We're not playing god here, we're just making sure that two parents who want a healthy baby can have one."
What's not logical about that?
What you're saying is equivalent to "botox shouldn't be publicly funded, therefore it shouldn't be made legal". Botox is legal in the UK, of course, but you definitely won't be able to get it on the NHS, so your "therefore" doesn't follow.
The article gives an example of a woman who tried 7 times to have children and failed because she is genetically defective in terms of her ability to have children.
The government, however, has made special allowances to a 1990 law prohibiting egg and embryonic re-engineering so that this woman can.
The Prime Minister's stated rationale: "We're not playing god here, we're just making sure that two parents who want a healthy baby can have one."
So clearly - the state is paying for people who can't have children to be able to have them - under the pretense that doing so is beneficial to society.
To be able to select this procedure, the prospective mother must already know about her condition. If she knows about her condition, she should be educated to abstain from having children instead of receiving public funds to have her defective DNA altered to facilitate the process of reproduction.
In any case reproduction being covered by the government is a separate issue, but I don't see why it shouldn't be.
More like 13% ... check my math ...
Most chromosomes have 2 copies per cell.
However ... there are many copies of the mitochondria : http://en.wikipedia.org/wiki/Human_mitochondrial_genetics#Qu... <i> Each human cell contains approximately 100 mitochondria, giving a total number of mtDNA molecules per human cell of approximately 500.</i>
Mitochondira make about 15% of then genetic material in a human cell.
total chr1-22+X/Y ~= 6,200,000,000 (6.2 billion, sizeof genome = 3.1B times 2) sizeof one mitochondira : 16569
so ((100)(50016569))/6200000000 = .13362096774193548387
----
Nuclear genome (no sex chromosones): 2,881,033,286 base pairs
Sex chromosones (avg): 262,592,623 base pairs (310,541,120 women, 214,644,126 men)
Nuclear genome (avg): 3,143,625,909 base pairs
Mitochondrion genome: 16,569 base pairs
mtDNA in a cell: 500
----
The proportion of genetic material in a cell that comes from mtDNA is thus:
(total mtDNA) / ((nDNA no sex) * 2 + (nDNA sex) + (total mtDNA))
(16,569 * 500) / (2,881,033,286 * 2 + 262,592,623 + 16,569 * 500)
which is 0.00137, or 0.137%
If we look at just the amount of information encoded, we get:
(mtDNA) / (nDNA + mtDNA)
(16,569) / (3,143,625,909 + 16,569)
which is 5.2710^-6 or 0.000527%
I couldn't imagine the additional emotional turmoil that would come from repeated miscarriages, terminations etc. I'm really holding myself back from thinking about the ecstasy that a confirmed pregnancy will provide after our time and struggles - to have complications and loss after that would be devastating.
So bravo to the scientists working on this, to the parliament for 'permitting' it, and of course to those struggling wannabe parents having to fight for their family dream.
I had three couples in mind. One went through IVF three times, the others two times each. In none of the cases were there successful results, though in all three cases there were significant financial costs. All three couples had a child (two of them more than one, so far) after they began using a modern NFP method to track the female partner's fertility; and the financial costs involved were a tiny fraction of the costs of IVF.
The anecdote certainly does not prove IVF does not work, nor was that my intention in relating it.
So what is the point? Well, many couples are oblivious to the existence of modern NFP and its effectiveness at helping couples both avoid and achieve pregnancy, without recourse to surgery and/or pharmaceuticals. I simply want/ed to help raise awareness of these methods.
Gosh, why wouldn't their fertility doctors have told them about it? b^)
My infertility treatment involved a cheapest-first approach, and that's entirely standard. We were told about charting cycles for best chances, analyses were done, some drugs were tried, and we were able to get pregnant via IUI for about $300 total. IVF is pretty much the final option, tried after everything else fails.
30 seconds of Googling brings up this article [1] (a secondary source, primary sources are Bloomberg and Washington Post), discussing the impression that doctors are performing/suggesting unnecessary, yet expensive surgeries/treatments. Even if it turns out not to be true (after proper research), it's an argument worth considering in any situation that involves financial incentives not aligned with the desired outcome.
[1]: http://globaleconomicanalysis.blogspot.co.uk/2013/10/unneces...
Good luck.
Very good luck!
Chaps - when the docs tell you you're infertile and need IVF, don't assume you'll be infertile forever. Have a vasectomy and "make it so".
Good luck with your IVF, if it works, it'll totally be worth it. Probably.
And I feel for the poor programmer whose job it is to deal with the brand-new edge case of putting three parents' names on one.
This method ups it to 6.
A third person to have "rights" over the child can only mess up stuff.
If only we as software developers could create software for most purposes :(
I would hazard a guess there is a possibility, down the track, that a court will have to determine whether a child has a right to know from whom her DNA comes.
It will be interesting to see, from the comfort of my arm chair, how this all unfolds over time.
The default case would therefore be [[0.5 Mom, 0.5 Dad], [mDNA:1.0 Mom]] for girls, and [[0.5 Mom, 0.5 Dad], [mDNA:1.0 Mom], [23X: 1.0 Mom], [23Y: 1.0 Dad]] for boys.
For clones, it would be [[1.0 Nuclear Donor],[mDNA:1.0 Egg Donor]].
For parthenogenesis, it would be [[1.0 Mom]].
For the new UK case, it would be [[0.5 Mom, 0.5 Dad],[mDNA:1.0 Egg Donor],...].
If, for some reason, a cloned baby had the Bt pesticide genes inserted, it would be [[1.0 Nuclear Donor],[mDNA:1.0 Egg Donor],[[Cry1A.105, CryIAb, CryIF, Cry2Ab, Cry3Bb1, Cry34Ab1, Cry35Ab1, mCry3A, VIP]:1.0 Bacillus thuringiensis],...].
The real problem is finding the person to rewrite the Crystal Reports to accommodate the new data structure. Feel sorry for that person.
It's a mitochondria transplant.
We don't start calling people "frankenstein's monsters" because they've had a lung transplant, even though that technically makes them a "person from FOUR people!" Shock!
It is sensational because it is an example of the state sanctioning the customization of human eggs and embryos - which is a pivot of public policy that creates vast consequences.
I didn't know they could even do this (technically), so this news gave me tears of joy.
I am lucky on two counts, to be male (can't pass it on) and also not (yet) had any symptoms myself. It must be horrible for any female who has to decide whether having kids is worth passing those risks on to their offspring.
They had some daft Conservative MP on as well trying a "slippery slope" argument but he completely missed the point about it being mitochondrial DNA so sounded, at least to me, rather silly.
She once told me she wouldn't have had children if she'd known she carried it. I'd make the same choice if I were female.
Some other sources have been referring to "three-parent babies" though, which doesn't seem right, as the mitochondrial donor has no maternal role or rights to the baby.
There are people who don't think this is a good thing?! If we could eliminate congenital disease, and make everyone smarter, it would be like fast-forwarding human evolution.
If you think the inequality and the way poor people get treated is a problem now, wait until rich people are actually genetically superior to the poor.
Exception being the U.S., of course ...
As soon as a nation of people get organised enough to plan ahead well enough to copy existing technology, or trade it, then technology can be had by all.
I don't believe it makes a whole lot of sense for 'rich' people to preserve a specific set of technologies for themselves when they can get richer if more people are able to pay for it. And where that doesn't happen we see other countries copying the technology.
Second we could easily solve it by making it available to everyone.
Third, the world is hardly genetically fair as it is. People are born with all sorts of horrible genetic conditions every day. If anything this will make the world more fair.
The devil is always in implementation details. I can't avoid amazement about extrapolating Monsanto DNA-modified seeds tight licensing control unto human "designer" genes.
According to the HFEA [2], the research group in Newcastle (who wrote the above paper) has been testing the two methods against each other - no decision yet as to the best for treatment, though.
[1] http://hmg.oxfordjournals.org/content/20/R2/R168.full#sec-5
[2] Section 3.4.4 of http://www.hfea.gov.uk/docs/Third_Mitochondrial_replacement_...
It's hard to say for certain what aspects of "humanity" is carried by mitochondria. So some will say that there are two mothers, others will say there is only one.
Some will say this is unnatural or violates religious beliefs. In my opinion it's a wide leap to say some reproductive technique is evil just because the people writing holy texts didn't conceive of it a few centuries ago.
Swapping out the nuclear DNA doesn't really complicate that.
Also everyone should watch Gattaca, it is one of best movies that shows how social inequality can arise in situations like these.
On the second point, Gattaca is a fictional tale, and as such should not be used as evidence to "show" anything. It is, at best, a hypothesis, and one not optimised for accuracy, or subjected to any scrutiny at that. http://lesswrong.com/lw/k9/the_logical_fallacy_of_generaliza...
Once you run you of fresh water and have to rely on nuclear power to run the desalination plants to keep people watered, you have three major problems.
Look at https://en.wikipedia.org/wiki/Total_fertility_rate the chart on the right. We're currently at 2.36 fertility rate and falling rapidly. 2.33 is what is necessary for replacement. The US is at 1.9 and Europe is 1.59.
The growth rate is slowing as the population is increasing.
Stop a moment to consider how that observation is irrelevant.
There are limits to growth. We are just not anywhere near them, and don't seem to be approaching them. World birth rates are coming down fast enough that world population will probably never again double.
> No limits to available fresh water supplies?
Fresh water is a local problem. The world fresh water supply is renewable and renews at a rate several orders of magnitude greater than human consumption. Fresh water is a problem because transportation of it is expensive, and people prefer to live in places that have supply problems above places that don't.
Still, I expect that fresh water supply problems will mostly be solved by desalinization rather than migration.
> No limits to energy production?
Nuclear is limited really only by capital expenditure. Solar's limits are also vastly greater than any feasible demand, and it's getting cheaper.
> Once you run you of fresh water and have to rely on nuclear power to run the desalination plants to keep people watered, you have three major problems.
And what would those be? In any case, it makes little sense to desalinize using nuclear. Desalinization is a problem that's a perfect fit for solar power, as the capital cost of equipment is low enough in comparison to the energy costs that you can effortlessly vary production with the load, and the end product can be stored well.
There are issues with transmission and storage, but I'm seeing a pretty comforting trend on the solar side of things.
I'm gonna need source on that one, please.
The Amazon river sends 209,000 cubic meters into the Atlantic every second[1]. That's 18,100,000,000 per day. A single human drinks about two liters (0.02 cubic meters) every day. There are 7 billion humans, so the global requirement is 140,000,000 cubic meters of water. The Amazon alone contains 130 times more than the global requirement for drinking water.
This is domestic consumption, which comprises 10% of water usage[2]. That means that 13 times more water flows through the Amazon than all of humanity uses. That's just one river.
[1]: https://en.wikipedia.org/wiki/Amazon_River [2]: http://www.lenntech.com/water-food-agriculture.htm
Humans use more fresh water than just the quantity that they actually drink. You also have to include the quantity used for sanitation, personal hygiene, and recreation. Even discounting non-household use, a single person can easily clear 100 L (0.1 m^3) per day through their water meter, without even trying.
Go read your water bill some time. Divide your metered usage by 30.5 and restart your calculation on a new bar napkin or envelope. That gives you a multiple of about 26, if the whole planet consumes water like American households, and agricultural and recreational uses are completely ignored. Use that same 10% figure, and the whole Amazon could be completely consumed by only 18.2 billion people.
That's just one river, but it is the one with the most water in it.
Also, water needed by industries and water spoiled by pollution.
I would contend nuclear is limited only by politics. Removing the political impediments to new nuclear would help a lot. The capital risks are a political problem, not an economical.
Yes I'm sure the Earth can support more humans but it is at the expense all other life.
Humans are so destructive they named an epoch after us. https://en.wikipedia.org/wiki/Anthropocene
The U.N. projects world population to increase to 10.8 billion by 2100 from 6.9 billion in 2010.
http://www.un.org/en/development/desa/population/publication...
The academic laziness of you and those who agree with you is disgusting.
http://www.parliament.uk/business/publications/research/brie...
Mentions the "The Human Fertilisation and Embryology Act 2008" which banned implantation of a genetically modified embryo. There is a provision in that act for Parliament to approve regulations that provides exceptions for the treatment of mitochondrial diseases.
More: Here's the section of the act:
[1] Section 4 of http://www.legislation.gov.uk/ukdsi/2015/9780111125816/pdfs/...
http://www.legislation.gov.uk/ukpga/2008/22/section/3
Here's the relevant original text:
http://www.legislation.gov.uk/ukpga/1990/37/section/3/enacte...
edited for error.
But by having that clause about mitochondrial disease in, it enabled researchers to investigate (and the the HFE Authority to permit research on) human mitochondrial transfer techniques in vitro by explicitly pointing out the possibility of a future redefinition.
EDIT: this explains it much better than I'm trying to - http://www.hfea.gov.uk/mitochondrial-disease-new-research.ht...
We have to keep in mind that, e.g. in Japan the fertility rate is 1.4/woman.
The rich people make less children than poor.
Beside, in rich countries fertility rate is dropping, especially in big cities.
Therefore, one way of seen this could be just as palliative.
So, a health secretary?