CRISPR used to genetically modify viable human embryos for the first time
qz.com
qz.com
Doctor: So do you want the $500 edit to ensure your child won't have diabetes. How about the $2,000 Autism edit? Then the gender change edit is to late to perform. We could do artificial semination and guarantee the gender of your child.
Here is a decent general article on the pros and cons.
http://www.nationalgeographic.com/magazine/2016/08/human-gen...
Why assume it's going to lead to some dystopian future when technological progress has shown that advances like this come down in cost immensely over time. Even an insurance system would want in on subsidizing these procedures if it meant an upfront cost versus long term or lifelong expensive treatments.
Edit: Why even assume it would be an insurance subsidy -- the government has a strong motivation to reduce health care costs for >= 65 year-olds and if you could eliminate or reduce costs through early genetic engineering the argument can be made that the government itself should subsidize as a public health initiative.
Wait a minute....
That's a straight up violation of the Hippocratic oath and blackmail/racketeering combined. We should enforce it strictly, vigilantly, and put doctors who attempt to do this in jail away for a very long time.
I understand your main argument stems from affordability of the procedure and that's a valid concern, but keep in mind that current societies already ration health care, either by availability/wait times (UK?) or wealth (USA). You won't be able to prevent the wealthy from modifying their offspring anyway and the unfairness of having them do it vs 99% not being able to afford do is not enough of a reason to stop progress, not even close. The goal should be to make this procedure routine, as affordable as an ultrasound or a tooth extraction or a cancer screen.
How do you address this with policy? The same way we should be addressing inequality right now.
Let me posit this question to you: if genetic enhancement would be available to 100% of the population, would you still have ethics concerns?
How _will_ we address this with policy? The same way we already do: meaning that we do not, and in fact are thrall to an army of lobbyists and interest groups who would have us believe this inequality is not just necessary but in fact morally redeemable.
Which is, in fact, already happening without genetic enhancement: the Olympics are a pretty much a display of peak human genetic fitness, and no one loses their mind about it.
What would be a problem: genetically enhanced humans reach some critical mass and decide to purge the non-enhanced ones à la Eugenics wars in Star Trek (purely hypothetical)
How is that not enough of a reason? The argument is the government has to step in and make it routine from the start. The alternative is to allow the wealthy to literally write superiority into their genes.
So is abortion. And, so we're clear, allowing or in any way approving of abortion as a doctor is a far more direct violation of the Hippocratic oath than this is.
> How do you address this with policy? The same way we should be addressing inequality right now.
You mean not at all ?
I've realized though that doctors and pharmaceutical industries don't need to do anything other than save sick patients to make us utterly dependent on genetic modifications. Genetic treatments do not transmit from parent to child. So every parent you treat, the children will need to be treated as well. In some cases all of them, in other cases the chances are simply increased a bit of needing the treatment, which isn't much of a difference.
Even that is ignoring what happens when actual improvements over normal humans become available as genetic treatments. 1% bigger brain ? There is quite a bit of studies that give the impression that on average brain size does correspond to intelligence, even if there are no guarantees in individual cases. It should be an easy change in the DNA to make it a few percent bigger.
So really there's a number of choices we can do:
1) genetic modification is only allowed to be used to cure the sick
This results in the whole population becoming dependent and hostage to genetic modification. Slowly at first. Then, when we learn how to optimize humans, very rapidly.
2) genetic modification is available for parents to create embryos
This actually results in slower dependence: diseases get eliminated, including in the gametes, and any treatment does not need to be repeated in children. Still, improvements will create a class based society.
3) genetic modification is free, and not optional, at least for certain ailments (like vaccines)
This would rapidly eliminate dependence on genetic modification and would be much more fair towards everyone.
Just because something is being doled out injustly doesn't mean it shouldn't be doled out at all.
Can we say "All Men are Created Equal?" Not anymore.
I don't have a problem with any of that.
The dichotomy isn't false. Like it or not genetic diseases are easier to fix when there's fewer cells to modify. Modifying a few thousand cells will always be easier than billions.
This will mean diseases that can't be cured in adults can be prevented from childhood. Denying this is condemning untold numbers of victims to diseases we could have cured.
Today rich people pay for better access to care through out all stages of life. That doesn't mean we should ban heart surgery (for example) because the rich can disproportionally afford to get it and catch conditions early enough to treat.
The "natural is ethical" argument disgusts me and I think you really should consider how much we already depend on progress before you argue for going back to the stone ages.
Cost is a terrible reason to prohibit this and your argument can be applied to nearly all other medical procedures. They all cost money and sometimes that makes them inaccessible to people who need them. This is a different problem to genetic modification.
As for your article, going through the "cons" section, it mainly raises things that need to be thought about rather than reasons not to do it. My opinions on a few sections:
- "making irreversible changes [to people and] all their descendants would constitute extraordinarily risky human experimentation": The changes are only irreversible to the first generation, the same process that introduced the change can removed it in the offspring. The change being irreversible isn't alone a good reason to prevent it. Again, there's precedent for this in existing medicine. If a limb or organ has to be removed, that certainly isn't reversible. If there's a choice between my child definitely being born with a known defect and a child maybe possibly being born with an unknown one, I'd likely take the latter. However I do believe we should understand things better before we go making frivolous modifications to hair colour and such without understanding the consequences.
- "By definition, germline gene editing would not treat any existing person’s medical needs": You're going to refuse to treat someone simply because they're not born yet? Again, acting through inaction. The same benefits brought by treating infants are brought by treating them before they exist.
- "Would germline gene editing be justifiable, in spite of the risks, for parents who might transmit an inherited disease? It’s certainly not necessary. [...] They can do [PGD] too [...]": PGD and CRISPR differ in process but as I understand it, not in result, so I don't believe you can say one is okay but not the other. As for the other section here suggesting you can use third-party sperm or eggs, yes, you can. It isn't strictly necessary to use gene modification techniques if you're happy having someone else's child but it still amounts to selecting for desirable traits.
- "PGD itself raises social and ethical concerns about what kind of traits should be selected or de-selected. These questions are particularly important from a disability rights perspective (which means they’re important for all of us).": I'm not sure I quite get the disability rights perspective. I believe this only really applies to people who believe that life begins at conception, who would argue that selecting candidates that don't have a disability over ones that do amounts to some kind of genetic genocide. Personally I don't buy that. Why should we leave things to chance when we can give the parents the choice to do what they think best for their child?
- "From a policy perspective, how would we draw the distinction between a medical and enhancement purpose for germline modification? In which category would we put short stature, for example? We know that taller people tend to earn more money. So do people with paler skins. Should arranging for children with financially or socially “efficient” varieties of height and complexion be considered medical intervention?": Again, there's precedent for this in existing medicine. Treatment for things like dwarfism and albinism are covered as medical procedures while treatments for mild sunburn and not being able to reach the top shelf are not.
Ultimately the article raises a lot of things to think about but I don't believe any of them are good reasons not to pursue genetic modifications to humans at all.
"The number of children born with Down Syndrome (DS) in Denmark has fallen drastically in recent years – so much so that the disorder could be a thing of the past in 30 years.
Since 2004 all pregnant women have been offered a DS scan – called a nuchal scan – and the number of abortions involving DS children has increased dramatically. Last year, 98 percent of pregnant women who were revealed to be carrying an unborn child with DS chose to have an abortion."
http://cphpost.dk/news/down-syndrome-heading-for-extinction-...
That ship may have sailed in a society where you can legally kill the embryo or cut 1/3 of the skin off a newborn infant's penis.
Making a rich child immune to diabetes or autism doesn't hurt poor people. It's strictly a net gain.
What's fundamentally different between this and, say, prenatal vitamins or good nutrition? Should we ban women from taking folic acid because it gives an advantage to people who can afford it?
Let's say an in-vitro preventive for diabetes could be developed but is blocked because of concerns about gene editing. That means thousands or millions of children will contract diabetes who wouldn't have if the preventive had been available and will die prematurely. How is that a good thing?
I can sort of buy the arguments for purely cosmetic changes like selecting sex or eye color or whatever. I can vaguely grasp the arguments against selective intelligence or physical strength enhancement. But to refuse to prevent diseases? Why?
Granted... the FDA and other pharmas do spend a lot of time, money and manpower to monitor clinical trials in China because eventually, the pharmas attempt to use these trials, conducted "over there" at lesser costs, to get approval for clinical use in the US through the FDA...
The other issue is epigenetics. Gene expression is regulated by various factors and that gene expression can be passed between generations.
So maybe you'll be able to remove a gene that could cause albinism in an individual, then 25 years later discover that the individual has become sterile.
It may seem otherwise but we still know very little on how a set of genes encodes information of how an organism will develop.
Are they, really?
As far as I know (and I am not a specialist, so someone more qualified may correct me), gene transcription and translation is far from well understood.
It's as if we don't have access to the source code for the compiler, only the machine code and the syntax. You can draw correlations and infer causality from your changes, but you can't really be sure.
At one end of the spectrum, Sickle Cell Anemia is caused by a single point mutation. The sixth amino acid in the hemoglobin beta chain should be glutamic acid, but it's been replaced by a valine. These have different charges, which is enough to warp the cell's shape and impair its function.
At the the other extreme, a lot of different gene variants have been associated with autism. However, these tend not to replicate very well--the genes identified in study A don't show up in study B and vice versa, and there are other possible mechanisms, like copy number variants.
CRISPR could potentially fix the former, but the latter is way beyond our current understanding.
Adding single proteins and flipping single genetic bits in single cell types in single organs is not the kind of thing that generally causes cascade failures. There are always exceptions, but in general biology is pretty robust to such changes. In fact, those are exactly the kinds of changes that occur from generation to generation. And these are precisely the kinds of systems that have been under deep study for the past four or five decades.
[1] https://serotiny.bio/notes/proteins/hbb/ [2] https://serotiny.bio/notes/proteins/brca1/ [3] https://serotiny.bio/notes/proteins/p53/
The idea that there is only about 2% difference between a chimp and man highlights this point.[3]
[1] https://en.wikipedia.org/wiki/Transcription_factor [2] https://en.wikipedia.org/wiki/Phenotype [3] http://discovermagazine.com/2006/apr/chimp-genome
Disclaimer : Not arguing for or against.
All the same, the fact that we're close to gene editing feels like something our of a SciFi book, and I think that's pretty cool.
I think our moves toward creating a more pluralized society, where people that have been historically deemed "genetically inferior" (the disabled, non-white people, trans people, women) have made slow and steady gains, are such that erasing that progress would require more changes to society than simply allowing genetic modification.
Genetic engineering an easy scapegoat, a slippery-slope argument that lets us jump too fast to the dystopic ending of our choice. A storyline that reduces societal, intra-personal progress to individual genetic choices is missing a big chunk of the puzzle.
People will probably benefit from some type of cure as opposed to trying to save mutation that causes extreme discomfort (maybe death). I totally agree with importance of variety but i think it's equally important to understand and revert some of these unwanted mutations.
[1]http://www.acsh.org/news/2017/03/07/did-gene-therapy-cure-si...
Would you be able to justify eliminating genetic malaria resistance? It's the same allele, of course, heterozygotes get the benefit, homozygotes get the disease.
OTOH, if you can do in vivo editing with appropriate testing, maybe you only edit embryos that would otherwise have the disease, which may marginally reduce the distribution of the allele (in a first order analysis; but if it makes know carriers less unattractive as mates, it might actually increase the distribution), but doesn't eliminate it.
There are lots of issues like this, and overzealous editing could eliminate beneficial traits whose genetic origins we don't understand as side effects of targeting undesirable traits.
I never used CRISPR when I worked in a molecular lab, just a TOL2 system which was pretty cool in its own right. But CRISPR needs a DNA probe (probes are attached to CRISPR to target very specific sequences of DNA for editing) and a way to deliver itself into the cell. I didn't read the paper myself, but I'm guessing they just do a little microinjection of CRISPR into the embryo.
And these gene edits for various hemoglobinopathies (G6PD and thalassemia), while impressive, are very simple. These are very specific mutations that when fixed, should yield a normal/working protein and a healthy phenotype.
https://en.wikipedia.org/wiki/CRISPR#Gene_drive
This is the point where my thought process forked off into wondering about the implications if the capabilities of Gene Drive could somehow become airborne.
"Endonuclease gene drives work by cutting chromosomes that do not encode the drive at a specific site, inducing the cell to repair the damage by copying the drive sequence onto the damaged chromosome. This is derived from genome editing techniques and similarly relies on the fact that double strand breaks are most frequently repaired by homologous recombination if a template is present, and less often by non-homologous end joining. The cell then has two copies of the drive sequence."
So that is pretty sweet. The researcher just hijacked the cell's repair mechanism in order to ensure the gene is present in both chromosome copies (I'm assuming the human 2n chromosomes here). That mean's all sexual progeny (zygote) will have to inherit one of these copies - and once that happens the single copy can duplicate itself by breaking the chromosome received from the other mating partner and then replicating the gene/drive via homologous repair.
If you want to say it could be dangerous then yea, I'll agree with you. It would obviously depend on the gene you would include with the gene drive (the gene drive I'm assuming is just the homing endonuclease and RNA guide sequence used to target the drive-less chromosome). If a deleterious gene somehow managed to attach itself to the drive system - either artificially or randomly acquiring the sequence in vivo, then that person may have permanently ruined their chances for normal offspring.
As far as an "airborne" vector with the gene drive/and bad gene someone wanted to be propagated, that would be a lot harder I think. I believe you would need the vector to be a virus, so it could gain access to the host's cells and DNA. So you would need a pretty high powered lab working extensively to make an infectious but not virulent virus - with the gene drive and harmful gene it carries. Those labs would be highly regulated and controlled bio weapons facilities. So yea, it could be dangerous.
Or it could be fantastic and something like this could be used to cure all of sickle cell disease by coding for a normal beta hemoglobin gene. Sickle cell only occurs from a single amino acid change, it's not a super complicated genetic disease. It's just one amino acid change that causes red blood cell sickling shape and fragility - which leads to a lot of pain and eventual early demise. There are other genetic diseases that are very simple that could be cured as well.
Anyways, sorry for the late response. I think there is potential to do a lot of good and a lot of harm with this technology. Let's hope we keep it in the right hands.
EDIT: Also, the second sentence should be "This should not stop us (humanity)."
Edit: Yes, this was not a perfectly warranted criticism. Yes, I may come off as smug. It's my opinion that needing perfect english should not be a requirement to have a conversation about tech in general.
I often get the feeling that in an academic setting every native English speaker assumes that everyone needs to be perfectly conversational in his English but when asked which other languages they even tried to learn you often learn that the English native hasn't put considerable amount into learning something else. Again, did not want to offend anyone.
I personally do not get offended, I like to learn. Still, I often experience corrections by an English native which are simply not called for.
>This should not stop us, the humanity.
This doesn't seem like something a modern native speaker would say, but it's basically the same thing as in sentences like this:
Montfort was a younger son of Simon de Montfort, 5th Earl of Leicester, a French nobleman and crusader, and Alix de Montmorency.
, 5th Earl of Leicester, is inserted here to clarify meaning, the same way you might insert a group identifier after a we. Perhaps it might seem less out of place if he used it at the beginning of the sentence, like:
We, the humanity, shouldn't let this stop us.
I really wish that movie didn't get brought up every time gene therapy makes another advancement.