120 pointsby 16594470913 days ago8 comments
  • MrDrDran hour ago
    I think it would be better to describe this as an ‘organelle’ transplant as it would be easier for people to understand and discuss. Yes there is a donor (egg) and yes the new child will pass on the mitochondria to her children. But calling it a 3 person baby is unhelpful and misleading as IMO mitochondria DNA is of a different category to chromosomal DNA.
  • le-mark3 hours ago
    Clever. So they fertilize an egg from the mother and another egg from a donor with the fathers sperm. Then they yank out the donor/father “pro nuclei” and replace it with the pro nuclei from mother/father egg. Thus the child ends up with the donor’s mitochondria.
  • JLemay3 days ago
    This is such an incredible breakthrough and a huge win for science and families alike, however its sad that despite decades of work there is still no cure for mitochondrial disease. But the chance to preventing it being passed on is still such a major improvement. Also it’s sad that only the uk is capable of doing this atm bc it was the first country in the world to introduce laws to allow their creation after a vote in Parliament in 2015, while other countries were debating that it would open the doors to genetically-modified "designer" babies
    • FL33TW00Dan hour ago
      The UK leads in this space as a previous PM had his newborn die of a genetic disease.

      Amazing the domino effect.

    • FerretFredan hour ago
      It is an incredible breakthrough and if it prevents disease then all well and good, but are our Administrative Systems set up to handle such an arrangement?
      • maxericksonan hour ago
        Sure. The mitochondrial donor can be treated as a source of tissue and you are all done.
    • im3w1l3 hours ago
      Cells can exchange mitochondria so in theory it might be possible to flood the body with healthy mitochondria and get them to slowly take over.
      • yorwba3 hours ago
        I would expect that to activate the immune system. "the unique components of mitochondria, when exposed, reveal their prokaryotic history and are recognized as foreign by innate immune receptors triggering an inflammatory response." https://pmc.ncbi.nlm.nih.gov/articles/PMC6218307/

        Maybe if you suppress the immune system, introduce working mitochondria, and then stop taking the immunosuppressants, any mitochondria that are still outside cells get cleaned up and the ones that got absorbed are shielded and can do their job.

        • inglor_cz2 hours ago
          Maybe we can find some way to deliver mitochondria right into the cells.
      • dr_dshiv2 hours ago
        Mitochondrial health is definitely going to be a big theme in the coming years.
  • foxyv3 days ago
    In vivo zygote mitochonrial transplantation. Neat! This is going to add an interesting exception to matrilineal DNA testing in the future.

    Another thought, what about three parent households engaging in IVF? Will this be an option to have 3 biological parents regardless of disease? How will we keep records properly? What are the legal consequences? Do mitochondrial parents need to pay child support?

    • perilunar2 hours ago
      The amount of mitochondrial DNA is tiny though (~0.1%, according to the article), and not particularly unique to any individual, since it is passed down lately unchanged apart from the occasional mutation. There's no point having 3 biological parents unless there's a bad mutation in the mother's mitochondrial DNA.
    • thaumasiotes3 hours ago
      > In vivo zygote mitochonrial transplantation. Neat!

      Absolutely not. This is in vitro:

      >> The eggs from both the mother and the donor are fertilised in the lab with the dad's sperm.

      In vivo would make no sense.

      • Out_of_Characte3 hours ago
        >In vivo would make no sense.

        It would certainly be one of the more stranger ways to explain the birds and the bees

  • kenjackson2 hours ago
    In the US would this be considered abortion by pro-life activists?
    • blargthorwars2 hours ago
      I'm prolife. Perhaps. You're destroying one human in this process.

      Some of us are a bit more comfortable with IVF-like processes because the intent is to foster human life rather than take it, just as it's acceptable to cause an abortion in the process of saving a mother.

      • hylaridean hour ago
        > Some of us are a bit more comfortable with IVF-like processes because the intent is to foster human life rather than take it, just as it's acceptable to cause an abortion in the process of saving a mother.

        But that (fostering human life) is also not a settled debate if the laws in some states are any indication. But debate is hard in jurisdictions where minority opinion can hold sway (like in Florida where a referendum hit 57% for enshrining a right to abortion).

        While I'm resolutely pro-choice and don't consider a fertilized cell to be "human", (before I continue I want to be clear, I 100% support these types of procedures in the article) there is eventually going to be a grey area where debate needs to happen before we hit Gattaca-style dystopian editing.

        PS This is not meant to argue against your view per se, which I disagree with but respect. I mean to illustrate how very quickly this gets messy and rational debate flies out the window. But that's the same with anything political in today's climate... :-/

    • karel-3dan hour ago
      There is a gamut of what is pro-life, pro-lifers themselves don't agree with each other on IVF.

      (the same as with pro-choicers and third trimester abortions for example)

    • bpodgursky2 hours ago
      Only the extreme fringe is willing to go to bat against IVF. Maybe 10%.
      • basiswordan hour ago
        I think it's higher than that. The Catholic Church is against IVF. Although not all its followers will stick to all its teachings a significant number will.
        • olddustytrail16 minutes ago
          It's not dogma, it's just advice. And I think the vast majority of people would just ignore it.

          Frankly, advice on having children from celibate men doesn't need special consideration from women.

          I say this as someone who was at least raised Catholic and still has an affection for the faith.

      • msgodel12 minutes ago
        Where I came from (rural and very conservative) everyone is 100% against IVF and frankly, religion aside, I'm not sure it's good. There are certainly ways to abuse it and there's a certain kind of person it's popular with.
  • 9999000009993 hours ago
    Wouldn't it be significantly easier to just use the donor's egg here ?

    Or adopt?

    This feels a bit narcissistic. If you and your partner determine you have genetic traits you'd rather not have, you have the option of not having biological children.

    This just feels like it's going to open Pandora's box. You and your partner are short and near sighted, edit in some height and vision.

    You're partner has ethnic traits they don't want to pass on ? Just edit those out.

    This feels like something that's going to start well intentioned, but snowball into very strange outcomes.

    God forbid this ever comes to America's profit driven health system. The rich would have the option to edit in "better" traits. Gattica here we come

    • daedrdevan hour ago
      Humanity has discarded natural selection thanks to modern medicine. Gene mutations that would have meant someone didn't survive now can be treated.

      The cold truth is that it is thus inevitable that in the future humanity will need gene modification to avoid the spreading of harmful mutations. This is what they are doing here, especially since mitochondrial DNA is inherited directly from the mother means that any problems will be propagated to all future generation unlike normal genes.

      • wizzwizz433 minutes ago
        It's not really a "cold" truth: eugenics isn't inherently bad, it's just us humans have an annoying cultural problem where we do horrible horrible things (including, but not limited to, genocide) whenever anyone tries to attempt eugenics. (It might be "human nature" preventing us from ever doing eugenics ethically, but all the evil eugenicists have a shared cultural background, so it's hard to tell.)

        From this perspective, techniques that are technically eugenics, but can't feasibly be used in evil ways, are unambiguous progress. I'm wary of gene editing, but the technique described in the article doesn't seem like a slippery slope to me.

    • HPsquared2 hours ago
      Mate selection is, consciously or otherwise, based on these considerations already.
    • laurent_du2 hours ago
      Why is any of that a bad thing?
    • mpalmeran hour ago

          This feels like something that's going to start well intentioned, but snowball into very strange outcomes.
      
      So it's like most technology, then.
    • mrweaselan hour ago
      > Or adopt?

      Adopt who? There is almost no children available for adoption, only highly handicapped children who needs an auxiliary family.

      Might be easier with a donor egg, but where are you going to get that? Egg donation is highly regulated and many would find it hard to get a donor. Of course this solution also requires a donor egg, so you'd already need to have that available.

      • stephendausean hour ago
        > There is almost no children available for adoption

        This is not true, at least in the United States. For one thing, there are many children in foster care who want to be adopted. It is also possible, though difficult and expensive, to adopt infants from mothers giving up their children for adoption as well. I am not saying it's an easy option or that everyone should do it, but it is an option.

    • gedy2 hours ago
      I doubt problems would be unique to America, many parts Asia are more aggressive with selective births and distorting sex ratios already, I suspect this will be readily embraced and with the much larger populations will be more an impact.
      • HPsquared2 hours ago
        I think Fisher's Principle will assert itself in those cases where the balance is disturbed currently. People will see how "excess males" don't have as good outcomes as "scarce females".
      • morkalorkan hour ago
        It's definitely not unique to America, in fact America is in some ways only catching up to other countries. What is considered legal and ethical in say Mexico or Brazil if you have money is a lot looser than in the USA. IVF clinics happily advertise that they let you do sex selection.
    • inglor_cz2 hours ago
      "near sighted, edit in some vision"

      And? I suspect that when the first glasses were made, someone complained about people playing God, too: why do you want to correct your eyesight when you were not intended to see well by the Almighty?

      Correction of genetic problems early on seems a lot better than various complicated treatments down the line.

      "Strange" often means just "we are not used to it", but the next generations will take such things for absolutely granted.

      It is no less strange that I, a Central European, am talking to an American in almost real time and free of charge, and can read his replies. That would be indeed very strange to anyone prior to 1995 or so.

      And yeah, this connectedness has downsides as well, but we may work on them.

      • 99990000099921 minutes ago
        What's a genetic "problem" ?

        In some Asian countries modifying your eyes to look white is a common practice. You could easily end up with biracial people editing out some of their more ethnic features for the next generation.

        Not to mention their might be some mistakes along the way. You can't git reset --hard a human.

        As imperfect as humans are, that's what makes us human.

        Now if as a consenting adult you want to modify yourself, laser eye surgery, etc, go ahead.

  • FollowingTheDao3 hours ago
    [flagged]
    • Waterluvian3 hours ago
      I think your argument is “we’re screwing with nature in big ways and we have a demonstrated history of being so confidently wrong. This is dangerous.” Which I think is a deeply important discussion to be able to comfortably have without the layers of disclaimers.

      I think a lot of these biotechs that raise alarms are pretty safe, and the problem is that we’re really bad at explaining in lay terms how it all works, and people naturally assume the worst.

      I think it’s also an issue of practicality (and this is where it flirts with being eugenics). What’s the alternative? To tell people not to reproduce if they have known disease prone genes? To make them not reproduce? To tell them they don’t get universal healthcare if they do?

      I think mucking about with our building blocks is the least bad option we have.

      • FollowingTheDao3 hours ago
        Thanks for not being reactionary. You are in the minority so I figured I would disclaim.

        > What’s the alternative?

        Acceptance. These parents can still reproduce. A female child will most likely be healthy, like the mother. And the male child will not always be born with a mitochondrial disease. People do not realize that father's can also pass mitochondrial genetics to their children. (https://www.ncbi.nlm.nih.gov/search/research-news/6639/)

        In trying to remove all risk from our lives we are making it inherently risky in other, usually unknown, ways.

        All the spiritual practices talk about acceptance, so just pick one.

        But my bigger point is that it is still eugenics. And that is bad no matter what the goal is.

        • Waterluvian2 hours ago
          > remove all risk from our lives

          As a parent of young kids, this is a core issue I grapple with. I want my kids to have fun and take risks and learn how to handle the bumpiness of life. But I don’t want my kids being maimed or killed.

          I think the argument could be simplified to “we’re collectively better off if we live in a manner where one consequence is that x% of us will get badly hurt.” And I personally believe that’s a true statement.

          My youngest was one of the x%. He played in a risky way (that was entirely normal when I was a kid) and later that night a team of orthopedic pediatric surgeons had to put his body back together.

          The hardest thing for me is not to be constantly saying “that’s too high; get down from there; don’t go too far; slow down” because that trauma lives with his mom and I far more than it does with him. But I believe it’s important for him to keep taking risks.

          I also believe it’s up to each parent to decide how they want to raise their kids. We don’t get to collectively decide for the parents.

          Which relates back to the topic: I think it’s collectivism vs. individualism. I believe we cannot decide for people that they don’t get a choice in the matter. Even if one might argue that this poses a collective risk to the population.

          • tomrod2 hours ago
            I'm so sorry that happened. As a parent, stories of injured children get that bad-news stomach drop to me, and I both empathize and sympathize. We are dealing with a similar (but older child) issue now and it is just heartbreaking to see them hurt.
          • FollowingTheDao2 hours ago
            > I think it’s collectivism vs. individualism

            The idea of individualism is a hard one for me. Are we really individuals? I mean, we get half our genetics from each parent, so where is the individual? Can any of you live as a total individual, without the assistance of even a small group? When in human history, even primate history, have you seen our species survive without a community?

            When a parent makes this decision for gene therapy, that does not just affect the parents, it affects the child (the outcome of which is still not understood) and it affects those child's children.

            Natural selection exists for a reason, but the eugenicists think they can control it.

            Comparing gene therapy to cognitive therapy (telling your kids to not be stupid), is in no way comparable. Doing gene therapy is not "raising your kids", it is creating your kids.

            I am saying this as someone who lives with THREE genetic disorders. von Hippel-Lindau syndrome (Father and Mother, hemangioblastomas), Cystathionine beta-synthase deficiency (Mother, homocystinuria), and a DNM1L Deficiency that leads to mitochondrial fission dysfunction (myoptahy, ME/CFS, OCD, Anxiety, Asperger's).

        • jjcob2 hours ago
          So as someone who spent the last few years caring for a kid with a genetic defect.... I really don't wish that on anyone.

          If there is a way to detect or prevent genetic defects before the kids are born, we should really allow people to make a choice.

          And I really don't care if doctors mix genetic material from 3 people to make a healthy baby. It's still a form of evolution. I'd think we should really try to give two people who really want to have a kid a chance to have a healthy kid...

        • perching_aix3 hours ago
          > But my bigger point is that it is still eugenics. And that is bad no matter what the goal is.

          You're literally advocating for letting genetic diseases cull the afflicted populations, "selecting for the better genes" that way. Seemingly the exact opposite of your claimed position, I hope you appreciate.

          Or you have no problem with selection as long as "nature does it"? That's the best idea I have for reconciling this at least. Are we humans not part of nature though? Is you preferring what nature does not just a preference still?

          If we figure out that some specific genetic difference results in people eventually dying before they reproduce, what's the difference between editing that out vs. letting nature do its thing?

          • lukeschlatheran hour ago
            > If we figure out that some specific genetic difference results in people eventually dying before they reproduce, what's the difference between editing that out vs. letting nature do its thing?

            We're not that smart. Everything has unintended consequences. One example some people have studied is sickle-cell anemia. It's a recessive trait so if you get two copies of the gene you get sickle-cell which is a horrible disease. However, if you only get one copy of the gene it provides substantial immunity against malaria.

            Now, maybe in this case you could say, okay, we will cure malaria somehow, not worth sickle-cell existing. But the thing is that gene isn't "the gene for sickle-cell anemia," nor is it even "the gene for malaria resistance and sickle-cell anemia." It affects hundreds, thousands, maybe millions of different things.

            I think there are some conditions where I don't have a problem doing that, and sickle-cell, mitochondrial disease, these things do seem "bad enough" to be worth putting our fingers on the scale. But I am not sure it's so clear-cut, and I think it's right to say that eugenics are categorically suspect.

            • perching_aixan hour ago
              > We're not that smart.

              How do you determine that? We've come far enough to see and manipulate individual atoms, emit and count individual photons, and build machines that understand human language (if ever so fleetingly). Unless how we work is fundamentally betraying how we can reason about the world, and we find that that's intrinsically linked to our genetics, I really don't see us not cracking it eventually proper.

              > Everything has unintended consequences.

              People use medications every single day that are effective for what they are taking it for, yet have "unintended consequences" that are consciously ignored or are found otherwise negligible by them. Seems like unintended consequences are not a blocker. The criteria hasn't been perfection even up to this point, it's always been a desperation-driven best-effort. Much like life and civilization as a whole.

              I can appreciate e.g. hesitance in taking on the responsibility of possibly being wrong about how something like this works - nature cannot be blamed, but humans can and that feels bad. But the alternative is pretty clear and is not going away on its own. I'm pretty sure at least that just like how genetic traits can be evolved multiple times independently, genetic defects can be too. This is also why I think to characterize this as eugenics is extremely and fundamentally wrong. Eugenics was about leveraging population control to ensure only the "good" genes get passed on - a concept that flagrantly flies in the face of this independent recurrence effect.

        • nick__m2 hours ago

            But my bigger point is that it is still eugenics. And that is bad no matter what the goal is.
          
          That's a thought terminating cliché for the ages ! The problem with eugenics is the noneconsensual, racist, ignorant ways and ideas of the early egenists. But the idea of editing out genetic mutation that purely detrimental (like the COMT-Val158Met polymorphism that make people prone to psychosis and schizophrenia, or one of the defective variants of the many genes that cause hereditary blindness or deafnessl would be a net positive for everyone. How can you argue otherwise?

          They should not mess with genes where the sciences is not 100% settled but that still leaves a lot's of mutations known to be 100% deleterious. There are no benefits in having hereditary blindness, deafness or schizophrenia!

        • tomrod2 hours ago
          When applied to non-human life, the alleged benefits of eugenics goes by the names domestication, husbandry, and similar.

          Correct me if I am wrong because I am absolutely not a historian. Eugenics was horrible not because we understand Mendellian genetics but because it was forced on people in the intent to allegedly "improve" a (political boundary placeholder)'s population in some way that was outright obscene, including use by Nazi Germany and many other places and regimes. US courts, etc.

          I think the difference here is that the technology is not forced to be used.

    • perching_aix3 hours ago
      > we are acting like we know everything. Humanity needs to stop thinking we are god

      These activities are in no way evidence for people thinking (too?) highly of themselves or "as gods". Just a completely made up accusation.

      I also don't see why the scary labels are relevant necessarily. To be afraid of whether this qualifies as eugenics or if you qualify as an eugenicist is sitting backwards on the horse completely. But maybe I just misinterpreted your catious wording and there's no being afraid here - in other comments you outright state you consider this eugenics, for example.

      > [As] Humanity[, we need to] accept our fates.

      No, we really don't. Though if you and people of the same opinion just accept fate, you also accept this research and similar continuing on, so maybe this is not even a point of debate in practice.

    • stefan_3 hours ago
      By this logic all gene therapy is eugenics.
      • hombre_fatal3 hours ago
        Presumably all of medicine too since it keeps us from "accepting our fates" and lets us procreate worse genes instead of letting billions of people die sacrificially due to their genes which is a "huge loss for evolution".

        Kinda funny to attack TFA by associating it with a naughty word while tracking in such awful ideas as if we're unable to evaluate the ideas ourselves.

      • tomrod2 hours ago
        Indeed. My understanding is that eugenics is typically something where the choice is not allowed by the person or, before birth, parents of the person affected by the procedure.
      • FollowingTheDao3 hours ago
        No, it is only eugenics when it when gene therapy controls the genetic makeup of a child before it is born. Gene therapy for cancer is not eugenics.
        • quesera2 hours ago
          > controls the genetic makeup of a child before it is born

          Selective breeding in livestock, mate selection in wild animals and humans...

          I do understand your point. I struggle with whether it is cause for (more than theoretical) concern.

          The ethical quandaries don't seem that important when it's isolated to expression of personal choice.

          State-driven decisions are ugly of course. And perhaps the insanity that we see in dog breeding is very bad.

          But we don't see the dog breeding problems in human parents (aside from the initial mate selection, which can be vicious!).

          So where does that leave us? Using blunt tools is OK but precise tools are bad?

    • hobs3 hours ago
      Generally the reason we think of Eugenicists as "bad guys" is because they've been characterized by being happy to sterilize or kill people to prevent their "subhuman genes" from being passed down to the next generations.

      This is different, another step in the erasure of genes that harm humans. This is not a genocide.

      It seems like your argument boils down to we should continue to have horrible suffering and early death because diversity of DNA is good and we shouldn't edit out potentially helpful mutations (that also cause horrible suffering) - if we can beat malaria, why would we need sickle cell?

      • MostlyStable3 hours ago
        So I think this person is wrong, but the one little nugget in there that is partially right is that I do think it's important that, before we start modifying genomes on a wide scale, we should have a pretty comprehensive database (100's of thousands to millions) of whole-genome sequences (alongside mitochondrial DNA) stored.
        • tomrod2 hours ago
          To my understanding that's still super expensive. We can do short SNPs (snippets? Not my field, I'm armchairing) for cheap like good ole 23andme but not full genome cheaply.
          • MostlyStable2 hours ago
            As of 2023, it was apparently <$1000/sequence [0], which means it would be a few hundred million to maybe a billion dollars. Which is a lot, but it really only needs to be done once, and is a global project. That seems pretty reasonable all things considered. But also, we can probably wait a little while since it's not super crucial until artificial genetic modification starts to get widespread, which is still probably a decade off or so. We could probably start just collecting samples now, and as long as they are appropriately preserved, the actual sequencing could be done later when it gets even cheaper.

            [0] https://3billion.io/blog/whole-genome-sequencing-cost-2023

      • FollowingTheDao2 hours ago
        > another step in the erasure of genes that harm humans

        If a gene has evolutionary survival by definition it is not a gene that harms humans, it only harms individuals. What you said here is what the eugenicists said. They thought there were genes that made blacks stupid, and that was harming them. They even thought there were genes that made whites sociopaths and wanted the Native Americans to breed with whites so we could live communally. This was an idea put forth by John Collier, the the head of the Bureau of Indian Affairs in the 1930's

        > if we can beat malaria, why would we need sickle cell?

        Have we beaten malaria? No. Do we need to? No. We need more children who are born heterozygous for the Hemoglobin subunit beta gene SNPs that make them resistant to malaria. I mean why not gene therapy for babies living in these malaria infested areas, give them the mutation for sickle cell! Oh, because we know the cost of that.

        You know its funny you brought this up because I spoke with woman once who was researching sickle cell treatments and I told her the cure was easy. Just do genetic testing on humans and do not allow people who are heterozygous for the HBB gene SNPs to mate. It would be wiped out in a few generations. She looked at me with horror, as she should, because that is eugenics. When they are doing here is no different.

        Diversity of genetics is what makes a species survive. As I pointed out, there is a benefit for being homozygous for some of these mitochondrial diseases. Future generations will not have these changes, what is the cost of that? More infection later in life, more mild suffering for other disorders? You know the oxidative stress produced from mitochondria are helpful fighting infections and viruses (https://www.cell.com/trends/microbiology/fulltext/S0966-842X...) maybe these kids also carry immune systems disorders and these MtDNA mutations could be a benefit?

        You act like you know the costs of this, and you do not. You only see the immediate benefit, short sighted and limited.

    • throw_m2393392 hours ago
      This is just the beginning of all that. "Designer babies" will obviously be a big business in the future, and one can take that logic VERY far, even for an entire nation where all babies will be mandated to have certain genes or characteristics... or worst, mandated specializations...

      Of course, science fictions authors,scientists and philosophers have written plenty of material on the matter and the danger of such societies... and it might blow up in our face one way or another, but nothing aside of our demise can stop scientific progress...

  • hndevnuftiesan hour ago
    [flagged]