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This entire field (mRNA vaccines and therapy) should be outright banned.
This is great news! I think people forget how anti-skin cancer protocols even as simple as applying suntan lotion weren't as popular as recent as 50-60 years ago. Lots of "sun children" of the 50s and 60s are now feeling the repercussions of only applying baby oil and are getting hit with lots of melanoma.
+1. Also, just to call out, it doesn't need to be _warm_ for you to need sunblock. Even when it's cooler / cloudier out there you can still get skin damage. Look for UV rating rather than temperature. Conversely, it being hot doesn't imply high-UV either.
I’ve always wondered about this. I have fair skin, and I tend to burn somewhat easily in very sunny environments like the beach.

However, I’ve never gotten so much as a whisper of sunburn / suntan / anything on an actually cloudy day where sun wasn’t hitting me directly. Is the damage a different type that’s imperceptible? Or is this a public health comms strategy where they assume people will see a single cloud in the sky and decide it’s fine to skip sunscreen, so they talk about how you should slather yourself with sunscreen 24/7, even if the sun is obscured?

I think the point is just about temperature. I've experienced this out on lakes in the northern US for example. It's sunny but not like a tropical beach, and maybe even a little chilly. But you'll definitely get burnt without sunscreen
People who are new to skiing/snowboarding are often surprised that their faces get sunburned, because of course it's cold and so how could they get burned
I’ve gotten visibly sunburned on cloudy/foggy days, where it was completely overcast. You may have gotten lucky.
IIRC, certain types of hazy high clouds can actually make the UV exposure worse. Personally, I got the worst sunburn of my life on a cloudy day.
The damaging part of sunlight is the UV (Ultraviolet) spectrum. This penetrates clouds more easily than the visible-spectrum light.

So sun obscured != low UV. It will block some of it though.

Or your behavior is different on a cloudy day? More covered in clothes, not sitting still in the sun at the beach all day etc.
This was my experience. Years ago I travelled to New Zealand in what would be their spring time. We stayed in Wanaka but also travelled around Twizel, Tekapo etc.

Although it was pretty sunny with clear blue skies, the air temperature was fairly chilly (shirt, jumper and fleece cold - and I'm Scottish so used to cold weather) and I started to burn. I was warned about this, and the probability of high UV exposure at altitude by the locals and family, and was advised to apply a high factor sunblock whilst roaming around the higher elevations of New Zealand's South Island, which I did.

I got the worst sunburn of my life while skiing in Colorado. I wasn’t wearing goggles or anything on my face, and the sun plus the reflection off the snow was brutal. I didn’t notice it when I was out there, but the next morning I wasn’t able to open my eyes. Lesson learned.
To be very clear about this, not all skin cancers are caused by sun exposure, and this is more true for Melenoma which occur both more frequently in darker skinned people and in place where there is little sun exposure.

Melenoma's are in fact being seen as caused by some other mechanism and not caused by sun exposure:

https://www.sydney.edu.au/news-opinion/news/2017/05/04/rare-...

Most skin cancers are not a big deal, and even Melanomas can vanish on their own.

Article: "two forms of rare melanoma are not caused by exposure to the sun.."

> Most skin cancers are not a big deal, and even Melanomas can vanish on their own

PSA: don't take medical advice from internet comments

It is very easy to disagree with me without showing evidence. What are you disagreeing with in that statement?

Most skin cancers are not a big deal: Skin cancer survival rate for BCC's are near 100%. Only Melanoma are more deadly but occur in only 25/100,000 in the US.

https://gis.cdc.gov/Cancer/USCS/#/special-topic/demographics...

BCC's occur in 80% of cases, the rest are mostly SCC's. Both of these are nearly 100% treatable.

https://wasatchdermatology.com/blogs/basal-cell-vs-squamous-...

> Melanomas can vanish on their own

https://www.nature.com/articles/s41379-021-00870-2

What did I say that was wrong?

If two forms or melanoma not caused by the sun, that means that .3% of a very rare skin cancer are caused by the sun. The odds of anyone getting melanoma from the sun are near zero.

This also means that you are likely to get melenoma form something other than the sun.

Your reading comprehension is way off. You've turned "Each year in Australia, up to 420 people are diagnosed with acral or mucosal melanomas. They affect people of all ethnic backgrounds, and are the most common forms of melanoma in people with very dark skin."

a discussion of specific subtypes of melanoma, into

"not all skin cancers are caused by sun exposure, and this is more true for Melenoma which occur both more frequently in darker skinned people and in place where there is little sun exposure."

Missing that these are "Two rare ... forms of melanoma" not "melanoma as a whole"

Let's also quote from https://wasatchdermatology.com/blogs/basal-cell-vs-squamous-...

> BCC ... can cause significant local tissue damage if left untreated. Most cases are linked to chronic sun exposure, especially in fair-skinned individuals.

> While it often remains localized at first, SCC can invade deeper tissues and, in some cases, metastasize to lymph nodes or other organs. Risk factors include cumulative sun exposure, a history of sunburns, and immunosuppression.

> While not all skin cancers can be prevented, effective sun protection and healthy habits can greatly reduce your risk for basal cell carcinoma, squamous cell carcinoma, and melanoma.

That does not support "most skin cancers are not a big deal"

"Melanomas can vanish on their own"

Can. People have survived falls from high places too. That doesn't make it safe. Even then, from your own link:

"Whilst some studies reported an association with improved survival and a reduced likelihood of SLN positivity, others did not find any significant association, and some even reported worse outcomes in patients whose tumors showed regression"

You seem to have read this as "melanoma just goes away and the problem is gone" rather than "the primary tumor recedes and survival odds are somewhat better"

5-year relative survival rates for melanoma skin cancer is 95%. That is all that matters.

https://www.cancer.org/cancer/types/melanoma-skin-cancer/det...

The study data is not out yet, I thought it was, so I will wait untiul it is to comment further.

But saying in the press that:

https://www.abc.net.au/news/2026-08-20/melanoma-drug-cancer-...

"Melanoma is one of the deadliest forms of skin cancer, with more than 330,000 new cases diagnosed worldwide in 2022."

Saying melanoma is the deadliest forms of skin cancer is not revealing anything and is a scare tactic. In 2022, there were approximately 60,000 deaths worldwide due to melanoma. A rare cancer with 18% death rate is not high compared to the others. The deadliest cancers include lung cancer, pancreatic cancer, liver cancer, colorectal cancer, and breast cancer. These cancers have the lowest survival rates and account for a significant number of cancer-related deaths.

But I will wait for the upcoming complications and the worse 5 year all cause mortality rate in these patients.

What is the goal of these comments? What is it would you like people to do or think differently after reading what you've written?

I'll go first: my hope is that someone who has read what I've written will be more likely to take seriously something suspicious they see on their skin rather than ignore it as unimportant, and be more inclined to take seriously protection from sun exposure when possible

My goal is to 1) not reward these companies by over inflating phase 3 clinical trial outcomes and 2) to not fear a skin cancer diagnosis and 3) not live your life in a bubble while polluting the world with sunscreen.

Sun exposure does not cause skin cancer. It only increases the risk of skin cancer in some people. Look at the ROI on people's behavior and it makes no sense. Are we actually causing more damage by using all this sunscreen and the plastic bottles it comes in and lowering everyone's vitamin D levels?

Sunscreen was widely used in the 70's and skin cancer rates keep going up. It's useless.

There are truths in there, but you seem to be looking only for evidence that supports your beliefs (and misreading evidence against your beliefs) instead of tailoring your beliefs based on evidence. Additionally you make blanket, definitive assertions like "sun exposure does not cause skin cancer" which no one should be listening to

Multiple things can be true at the same time:

1. Skin cancer can be successfully treated if found and removed early

2. Vitamin D is healthy and necessary, but at the same time too much sun exposure is harmful. That harm depends on different factors (like skin tone)

3. Some kinds of sunscreen might be problematic or bad for the environment, but there are different kinds of sunscreen (mineral-based, reef-safe)

4. There are multiple ways to mitigate sun exposure, not just sunscreen (avoid peak UV times, wear sun-protective clothing). Mitigation doesn't mean "complete avoidance"

5. Sun exposure is not the only cause of skin cancer, but it is a cause of skin cancer and a common one at that

I did not say that the sun does not increase the risk of skin cancer. I did say it does not cause skin cancer. Do you understand the distinction I’m making? “Cause” can only be determined when the event has already happened. And even in the case of the sun causing someone’s skin cancer, it is not the only variable.

My argument is that higher vitamin D will help a person’s life more than any increase of risk of skin cancer one would get from exposure to the sun.

"Alcohol causes hangovers" is a true statement.

"Alcohol does not always cause hangovers" is also true.

"Some people don't get hangovers from alcohol" is also true.

"Some hangovers are not caused by alcohol" is also true.

"Alcohol does not cause hangovers" is a false statement.

So it is with UV radiation from the sun and skin cancer.

< This also means that you are likely to get melenoma form something other than the sun.

Quantifiably false statement. Incredibly dangerous misinformation to spread—shame on you.

From https://onlinelibrary.wiley.com/doi/10.1002/ijc.35463

> Cutaneous melanoma (CM) accounted for around 331,700 cancer cases globally in 2022

> An estimated 267,353 (95% uncertainty intervals [UI]: 242,818, 278,638) CM cases were UVR attributable globally in 2022

UVR = Ultraviolet radiation

Cutaneous melanoma (CM) is the vast majority of melanoma cases in the US at least: > The percentages of melanomas that were cutaneous, ocular, mucosal, and unknown primaries were 91.2%, 5.2%, 1.3%, and 2.2%, from https://pubmed.ncbi.nlm.nih.gov/9781962/

What’s funny is before the 50s and 60s everyone knew you should cover up and women wore bonnets. That too much sun was bad for you.

Laura Ingalls Wilder of Little House fame (I mention this a lot as I read these to my children as an adult, and they’re a fascinating look at 1880s America) has lots of places where her mother says “put on your bonnet! Don’t get too much sun!”. We act like people in the past were ignorant but people in the 50s and 60s were just a very special type of arrogant, all of Chesterton’s fences were torn down during that time period.

We developed creams that stopped sunburn, but were still great at getting you cancer. A lot of the ads from 70s and 80s talked about how they stopped UVB but let the tanning UVA through! So yes, they didn't burn, but the long term cancer rates exploded, along with all the skin aging.

So it's not that they ignored the all knowledge. I blame most of it on the rather detrimental tech advancement. Like cigarettes with filters: now safer (except you can smoke more now, and the cancer risk is still a disaster)

> We developed creams that stopped sunburn, but were still great at getting you cancer.

I thought you were going to talk about the ingredients in the cream were carcinogenic themself.

technically UVB is much more tanning than UVA. UVA tans for a short amount of time. UVA penetrates much deeper into the skin though and has few benefits (UVB stimulates Vitamin D synthesis).
No I think you’re looking at this wrong.

They thought too much sun was bad for you because back then tanned skin was considering a mark of being poor and pale skin was a mark of being wealthy since rich people didn’t have to work outside.

They also had puritanical Victorian notions of modesty and covering up.

There was no knowledge linking sun exposure to cancer or negative health effects. People in the past indeed were ignorant on many things.

Pretty sure a bad sunburn sucked back then as much as now, and was something one tried to avoid.
Unless you are albino (which is a large set of other problems) being in the sun all day will develop enough of a tan that you won't sunburn. There might be a problem in spring, but by summer time most people will have spent enough time outdoors that they wouldn't sunburn. I've always been the lightest person in town (a tie in Stockholm) and I can spend all day outside without any sunscreen and I won't burn on the parts of my body normally not covered (my arms), but other parts would burn in a few minutes (If I took off my hat or shirt...)
I don’t think this is correct, Black people still get sunburns
Black people who spend all their time indoors or covered up will get sunburned if they go outside. If that black person gradually increases their sun exposure they can (in a few weeks) reach the point where they can be outside without sunscreen and they will not get sun burned.

Note that I'm making no claims on how natural sunburn resistant affects skin cancer.

Increased melanin provides some protection against burns, but it doesn’t make you immune. There’s also the aspect of UV damage without burns, which is still harmful and is not affected by melanin levels.
that's his point. anyone can get sunburned, and almost anyone can prevent sunburn through gradual exposure. except albinos, who are especially susceptible.

melanin is also not the only factor in preventing sunburn/cancer. there are many repair pathways and genes, which are present to differing levels in various populations.

The same is true for me, a white person of northern European heritage. If I have a few weeks and time to work at building up a tan, I can get to the point where I won't burn.
This is an illusory statistic because "black people" isn't a real category. People who self-identify as "black" have a wide-range of skin tones. Even a moderate bit of brown completely eliminates the risk of sunburn. You can have two "black" parents and be lighter skinned than the average southern Italian.

I say this from experience. I am a black person who is not particularly dark skinned, and have only had the slightest sunburn once in my life, after I had been working in a field for 16 hours straight in full sun under clear sky detasseling corn. When I got back to camp, the back of my neck seemed slightly sensitive, which was unusual. It was fine the next morning, and never peeled at all. I did the same for 2 weeks, and this was the only time I felt this. This was the worst sunburn (if it was one) that I've gotten in 50 years of life. I've spent plenty of time outside, and plenty of time inside being a code monkey and never going outside. I've never worn sunscreen.

I've never met a black person as brown as a paper bag who ever got a sunburn, at least that I know of. My dad is pretty pale, I think I would have heard about it.

I’m overwhelming white ancestry but with some remnant traces of melanated ancestry (> 1%) and I tan very easily. I’ve been mistaken for hispanic or Black before during the summer. My mom is much darker than me.

We both get sunburns. My even darker grandmother got sunburns. My Black friends get sunburns. I am not sure that you are correctly correlating your experience with actual facts about the sunburn resistance offered by melanin.

As a counterexample, my bestie is "brown as a paper bag", and he was convinced he couldn't get a sunburn, up until he did.

Unrelated, he also swore he couldn't get poison ivy, until he literally rolled in it to prove it to me. I found the aftermath more amusing than he did.

It's bizarre that you cite being outside at 60 degrees latitude as evidence related to high UV exposure.

That's like a resident of Porto saying most people don't get frostbite walking around outside in winter...

Fascinating. Now come and try that on the Arabian peninsula and see how you get on
Are you paying for my mid life crisis? Otherwise my boss expects me back in the office before I could build up the needed tolerance (I'm expecting this to take a month) such that I'd expect to spend all day in the sun without burning.
I don't know about that. I'm a fairly tanned individual, but where I live, in Texas, if I spend all day in the sun, I'm getting sunburned bad everywhere.
That "if" makes me understand that spending all day in the sun is not something you normally do. I've been told by others who live in Texas that you can build up tolerance and spend all day in the sun.

Naturally darker skin does not automatically provide sunburn protection. It is spending time in the sun that adds the missing part that provide that protection. I don't know how this differs from dark skin, but I've seen it myself.

Note that my claims are only about sunburn. The article/topic is skin cancer which may well have different factors from sunburn.

As someone from Britain with Scottish ancestry I don’t really tan at all. The melanin in my skin clumps in freckles, severely limiting its effectiveness at blocking UV. I can spend time outside in a t-shirt during the long summer evenings in Britain/Scandinavia but will burn during the midday sun. Living in California now the sun is stronger for longer so I just cover up.

San Francisco is at a southern European latitude. It’s a lot worse in the tropics.

The same thing happens to me - I call it a low-res tan because it's all pixelated.
(comment deleted)
Or rather, linked to completely wrong negative health effects that were just “common knowledge” thus requiring no actual evidence like:

People with light skin should always wear a hat that fully covers the head/face in tropical/equatorial climates (okay, good so far) or else the powerful sun rays will penetrate the skull (?) causing brain damage that will make you go insane (!?!?)

Victorians may have inadvertently protected themselves against excess mortality due to melanomas with their pith helmets, but it’s pretty hard to argue they were actually “correct” with modern hindsight considering the entire chain of reasoning was wrong.

(For example, you see this in Kipling’s writing where he’ll randomly include an ominous case of some guy who forgot/lost his hat and promptly had to be committed to an insane asylum, as one does).

They were too busy dying from typhoid, cholera, "consumption" (TB + other lung diseases) and probably lung cancer caused by all the coal / asbestos.
This is silly.... most of the world didn't live in england.

All cultures (including mine), have a way to warn kids, or adults for not to stay too long in the sun. From normal sunburn, to feeling light-headenes/fainting due to heat excaustion, etc.

In the winter was the opposite. (stay in the sun to get some sunlight and not get sick).

So, they knew, and had nothing to do with 'class'. Also, they knew some sun was good/beneficial, especially during the winter.

Pale beauty is a phenomenon across geography. What correlation a society works out is largely lost in the cycles of avoiding the sun being a relative luxury until you get expensive air travel.
Again... you are confusing second order effects, with the primary reason.

We have an old saying "te rafte pika e diellit", may you get a spot, sun spot, aka cancer from the Sun.

People knew excessive sun is unhealthy.... if you could you avoid it during the summer. It was not necessary to make you look 'rich'. Ability to avoid it, meant you were rich. And people wanted to be pale, because you look rich, that is a second order effect, that came because of the original reason (aka, too much sun is unhealthy).

The correlation looks right so all people who have rituals like telling their children not to look poor really understand and later communicate the truth? Is this true for religious stigmas related to food too?

I think you are retro analyzing and presuming individual intelligence because this collective result looks right to you. Really, some people understand some risks and many people who can follow taboos they can afford are not exactly sure what they would learn first hand and what part is superstition.

That's the thing about traditions and Chesterton's fences, you don't need to know why they work for them to work.
People were aware of heatstroke and sunstroke before the Victorians. There's biblical references to heatstroke and even in Roman and Greek texts.
The idea that humans were basically retarded prior to about 1901 is a little hubristic
They were no dumber then than in 2026, but they fundamentally had much less access to information. How much do you trust the medical advice of an uneducated person in 2026?
actually depends on the age and life experience of the advisor - if it's an old woman I'd be inclined to listen to what she may want to say.

A young MD full of himself? I may be a bit sceptical about his know-it-all attitude.

How much do you trust the medical advice of a doctor in 2026?
> We act like people in the past were ignorant but people in the 50s and 60s were just a very special type of arrogant,

I’d be curious to know if tetraethyllead in gasoline has anything to do with people from that time being cavalier about exposure to the sun, or if the science was just not there to make the connection between sun exposure and skin cancer.

> before the 50s and 60s everyone knew you should cover up and women wore bonnets. That too much sun was bad for you.

I'd say partly true, mostly false. As sibling comment mentions, much of this was driven by fashion and class etc. and not from some fundamental understanding of damaging UV exposure.

Furthermore there was research that was trendy at the time called "heliotherapy" [0] where all sorts of diseases were believed curable by sun exposure, including smallpox, TB, etc.

0: https://en.wikipedia.org/wiki/Light_therapy#History

When I got chickenpox in the 80s my grandma made me sit out in the sun to heal it faster. Heliotherapy lives on!
In retrospect, I wonder if there was a measurable effect on sun exposure creating vitamin D => immune system recovery, especially if the patient were otherwise not outside much?

Like, I doubt that fixing a vitamin D deficiency is going to cure you of smallpox or TB, but could imagine a path where it helped at least.

I don't think that was because of UV exposure or anything related. Look at Bedouin tribes even today. They wrap up head to toe, man and woman and child alike, not to avoid tanning but because prolonged exposure to direct infrared will fry you like an egg.

I grew up in the same general region as Wilder, and we sought shade not to avoid sunburn. We were all chestnut brown by the end of summer anyway. It's because the direct sunlight on an August afternoon was brutally hot, and you wanted as little of it to hit your skin as possible.

Bedouins are literally being chargrilled from both sides, the worse sun on Earth and a mostly perfectly infrared accumulator below them
Everybody who's not been raised in a bubble knows the sun burns

It's only recently that we had space for completely retarded ideas like "staying in the sun doesn't hurt you" or "sunscreen causes cancer"

That's the right thing for the wrong reason, which can actually significantly forestall figuring out what's actually going on.

Scurvy is like that. They figured out that if you give sailors a ration of fresh fruit juice they don't get scurvy - this works because the fresh fruit juice has Vitamin C and Scurvy is just Vitamin C deficiency. But they didn't know why it worked - why would a cow, a mango, a lettuce, and indeed basically everything else have a chemical in it that humans can't synthesize ? That's crazy. Except, nope, that's really what's going on. At some point an ancestor deleted the synthesis pathway for this chemical, their offspring weren't bothered because fresh literally everything has the chemical anyway, so the deletion stuck around.

At the same time ships get quite a lot faster, travel across the Atlantic is now rapid enough that even if you deliberately abstained from Vitamin C you wouldn't get scurvy, your body hoards many chemicals it needs (a few must be made "fresh" but most can be hoarded) and only develops issues when the hoarded ascorbic acid is exhausted after a few weeks. But they don't know that, and so when they swap a working solution (store fruit, squeeze the juice out, drink fresh juice) for a non-working solution (squeeze the juice, preserve that, drink preserved juice) the apparent results do not change.

Until they do something more extreme. Go to Antarctica, which is incredibly hostile to life anyway, and then stay there for months. Despite your magic preserved fruit juice you get scurvy. The juice wasn't magic, and eventually you will figure out it was the freshness which was magic and from there that there really is a chemical found in cows, mango, lettuce and basically everything alive which we cannot synthesize. Ascorbic acid, Vitamin C.

In many places covering up is just not enough because of Rayleigh scattering. I don't think this vaccine eliminates need for sunscreen. You'd still feel extremely uncomfortable/pain after 15 minutes in places like Australia even if you don't get melanoma.
melanoma , unlike the others, has a much weaker link to sun exposure. its why melanoma often appear in areas with no sun exposure
Quantifiably false statement. Incredibly dangerous misinformation to spread—shame on you.

From https://onlinelibrary.wiley.com/doi/10.1002/ijc.35463

> Cutaneous melanoma (CM) accounted for around 331,700 cancer cases globally in 2022

> An estimated 267,353 (95% uncertainty intervals [UI]: 242,818, 278,638) CM cases were UVR attributable globally in 2022

UVR = Ultraviolet radiation

Cutaneous melanoma (CM) is the vast majority of melanoma cases in the US at least:

> The percentages of melanomas that were cutaneous, ocular, mucosal, and unknown primaries were 91.2%, 5.2%, 1.3%, and 2.2%, from https://pubmed.ncbi.nlm.nih.gov/9781962/

Please be careful and charitable in reading others' words, especially as they relate to scientific topics.

OP did not say that melanoma has no sun exposure risk but that it is lower than the risks associated with other cutaneous cancers (e.g., SCC and BCC) and it would seem that's true based on the very short search I performed.

https://pmc.ncbi.nlm.nih.gov/articles/PMC5742376/

The criticism and correction were polite, helpful, and appropriate.

The original comment is misleading. Your reply is bizarre, and seems to deliberately misread the original comment, the reply, and the context.

> misread the original comment

By pointing out that it is true using a reference?

> the reply

The reply misunderstood the first comment and went on to discuss something a)interesting but b) not germane to whether melanoma is the skin cancer with the highest sun exposure risk.

I have no idea what you mean by context as this small discussion is quite self-contained. Think of this as making sure everyone realizes two homophones actually are distinct words.

The criticism was both impolite and against HN rules.

The reply was reiterating HN rules, as well as adding data supporting the original statement.

My parents were nudists. So I spent a bunch of 60s % 70s getting sunburn. I bet that even baby oil would have cut some of that down.
>> This is great news...

No this is insane news, the world is crazy and dumb. Must be all these LLMs. Stock up more than 150%, based on totally unpublished data and an X post...

- The flashy 49% figures are from the old 157 only patient Phase 2, not this Phase 3 trial. The phase 2 was open label, had only 50 controls, and its randomization was disrupted. Meaning 9 patients were reassigned and the final 37 were no longer randomized. Its primary RFS result was p=0.053 two-sided, with the 95% CI crossing 1. It also used an unusually permissive one-sided alpha of 0.10, and much of the later "confirmation" is just longer follow up of those same 157 patients...

- This phase 3 news so far is nothing more than a press release. They have not published hazard ratio, or confidence interval, their event counts or survival curves.

- They met the endpoint as used in the press release means nothing, until they publish the actual 3 data, so my money is at the end this will be a kind of marginal effect that researchers will struggle to reproduce for years

Another type of study that will take 2 to 3 years to validate or dismiss, in the meanwhile stock is up 150%....

the stock is up 150% because if Moderna has indeed cured cancer, the stock is worth many magnitudes more than that. It's presumably based on the probability this report is indeed as promising as it is at face value. If Moderna had announced "we are 100% sure cancer is cured" the stock would've gone up much more
Nobody is talking about curing cancer here.

These are patients who had melanoma surgically removed, and IF the unpublished data of phase 3 turn out to be true... you are looking at having improved survival rates after 2 to 3 years on 5 to 10% plus of the patients. That is ALL this still unknown announcement MIGHT mean.

I was being hyperbolic, but reading the comment back it doesn't really come across that way.
150% increase is because it started from a low point. Moderna's stock lost 94% value after Covid. Stock price speaks to investors' enthusiasm, there is no algorithm.

> This phase 3 news so far is nothing more than a press release.

Can you find a case where a press release after phase 3 was later proven wrong? They do have the data, and most likely the data is positive. They're talking about FDA's approval as soon as late 2027, which is fairly soon.

Do you know what would be more dramatic than stock gaining 150%? that'd be the stock crashing if the press release turned out to be wrong. Follow the money if you are skeptical. See who's selling.

> The flashy 49% figures are from the old 157 only patient Phase 2, not this Phase 3 trial.

There are 1,100 patients in phase 3. More evidence that they're pretty confident.

This is great news.

(comment deleted)
>> Can you find a case where a press release after phase 3 was later proven wrong?

Galera Therapeutics, Actimmune, leronlimab, roxadustat, tivozanib, aducanumab, tebipenem are all examples of Phase 3 massive failures.

My mother always covered up and always made us kids cover up. She still died of melanoma. Sun may increase the risk, but sun cream doesn't make it impossible. Cancer has no friends.

Well done to the drug researchers. I have my fingers crossed someone else gets to avoid this

There's also the effect that sunscreen makes you spend more time in the sun than if you didn't use sunscreen because you think you're "protected".
You are saying that, even if you wear sunscreen and avoid sun burn, the UV exposure will still potentially lead to skin cancer?

I'd like to see the primary research backing that up. Or be told how I misinterpreted your statement.

Yes, 100%. It's the same reason that my kids are able to tan through the same sunscreen application regimen that leaves me pale.

Source: My Mohs surgeon. And 3 skin cancer surgeries (so far).

there is also that anything that blocks UV (sunscreen, windows, etc) by definition blocks UVB first and then UVA, and UVA is the one that penetrates most deeply and has few benefits
skin grows/regenerates at a rapid pace, which means mutations (mistakes in DNA replication) are naturally likely to happen there than in slow-growing tissue. skin cells and the immune system are constantly self-surveying and nipping these in the buds, under normal conditions. but there are things that can affect this process.

a recent study of 2 million people in ontario showed that both high-sun and low-sun exposed people had higher risk of melanoma than people with moderate exposure.

https://www.nature.com/articles/s41598-026-48477-4

https://imgur.com/a/site-specific-melanoma-risk-by-occupatio...

a possible explanation is that UV light stimulates repair pathways within the skin, which boosts the baseline level of repair.

Enhancement of UVB-induced DNA damage repair after a chronic low-dose UVB pre-stimulation

https://www.sciencedirect.com/science/article/abs/pii/S15687...

another explanation is that as much as you can try to cover up, occasionally you may slip up, and going from extreme low-exposure to intense sun is especially bad, because your repair pathways are not primed, skin is untanned, etc..

in conclusion, extreme low or high sun exposure is bad. at the beginning of the summer you should gradually exposure yourself, and then exposure yourself daily but not overly, for the rest of the year.

Ever since I first heard of them a decade ago, it seemed that mRNA therapeutic vaccines were going to be the next wave of massive improvements in care. It's taken a bit longer than I had expected, and it's not that mRNA is the only way to make these sorts of vaccines, it's just so much better than the alternatives.

I'm very very excited to see what comes next.

This appears to be a huge potential win for health. The market has Merck up 95%, which is some sort of validation I suppose.

Related stories:

https://www.fiercebiotech.com/biotech/merck-and-modernas-per...

https://www.reuters.com/legal/litigation/merck-moderna-say-m...

https://www.wsj.com/health/pharma/moderna-merck-vaccine-succ...

oh nice. If it goes up another 100% I may not lose money on this stock anymore.
I mean, this appears to be validation of mRNA in general, right?
Saving a couple million people in the pandemic wasn’t validation enough?
> Saving a couple million people in the pandemic wasn’t validation enough?

Well it did give more than a couple million people myocarditis as a side effect, so there's that.

You are absolutely incorrect. This is a great opportunity to find out where you heard that, and ignore that source going forward.

The largest study I can find has 536k subjects. It shows that mRNA vaccinated vs. non-vaccinated people who had COVID had myocarditis >10x more often, and it was a worse long-term form.

https://news.ycombinator.com/item?id=49363659

I mean, the question is almost always about whether it's economical or not, right? Whether you can find diseases it's efficacious to treat with this mechanism, and prove it (trials are expensive).
And if it doubles after that, I may even beat a passive S&P 500 investment.
You know many stocks have done better than the SP500, right?
I am in fact aware that some of my stock investments have beaten the market while others have underperformed the market.

MRNA, as it happens, is the latter.

not really a huge win. It's going to cost taxpayers significancy and may not improve survival much or total life expectancy . The stock is way overextended. It's a long way from anything that can be used on patients, assuming it even works well enough to be a commercial success. History has shown this is seldom the case. I would short it if wasn't so expensive and risky to do so.
> not really a huge win. It's going to cost taxpayers significancy and may not improve survival much or total life expectancy . The stock is way overextended. It's a long way from anything that can be used on patients, assuming it even works well enough to be a commercial success. History has shown this is seldom the case. I would short it if wasn't so expensive and risky to do so.

Buddy, this is a phase 3 trial. This is about as close as you can get to "anything that can be used on patients" without already being approved.

It is clear that you don't have experience in this area.

For a while (like a year+ ago), the shares were trading around cash value. But they were burning through cash. Happy it’s worked out for them!
Many people, including myself love to take pot-shots at "big pharma." But, this just seems like a win-win, for the org and humanity. They believed in their tech, rode it out, and we all come out better for it.
Often the case with big pharma. I for one will never join in on the populist backlash against those that make livesaving pharmaceuticals for us.
Yeah, this is a win. US pricing for insulin or asthma inhalers, not so much.
I listened to a great podcast on this just a month ago - too bad that I thought all of this would obviously be priced in already… https://virological.podigee.io/51-21-cancer-vaccines-how-the...
Even if you were to optimally price in all available information you still have uncertainty of what will actually happen. i.e. A 1 dollar coin flip has an expected value of 50c before it’s thrown and it will collapse either to zero or to one after the uncertainty is resolved.
I don't believe the efficient market hypothesis. However even if you do, new information has arrived and that will affect the price.
Hard to price in the political factors now involved in Moderna's success or lack of success.
I think the "expected value" was priced in, but regardless of the result, this trial would move the stock price towards that direction.

Biotech is one of the very very very few areas of the stockmarket where specialist knowledge generates alpha.

Trolling through random biotechs, learning about their tech, and investing in the most promising applications of that tech in the most impactful areas is something that happens somewhat on publicly traded markets. With tech, most of that happens pre-IPO.

It was priced in, the share price prior to the news being released was taking into account a probability measurement of the trial succeeding or failing. You can’t price in both options of a binary outcome simultaneously, so part of the equity price was functionally equivalent to a call option on the outcome of the drug trial that only resolved after the trial results are announced.

It’s similar to the situation where a company puts out a public offer to buy another company at say, $50 a share on a day that the acquisition target is trading at $40/share.

If the stock of the target company is trading at $46/share, the market is pricing in the probability of the acquisition not happening. If the market knew the acquisition would happen with 100% certainty, the price of the target company shares would be equal to the buyout share price offer. You can assume the risk of the acquisition not happening by purchasing shares at $46, and if it does end up going through, you earn $4 a share from assuming that risk.

I have 1000 shares of mRNA woohoo! For all the hate I have for the COVID vaccine, I still believe in the underlying technology and I put my money where my mouth was and bought around $20. I think this is just the first of many cancer treatments mRNA will bring and I’m very excited for the future of the technology.
> For all the hate I have for the COVID vaccine

Can you clarify that? It saved 100K+ lives even by incredibly conservative estimates, and allowed life to returned to normal at least a year earlier than otherwise.

I can't speak for other people but I was upset to enter a medical era where bureaucrats were forcing medical decisions on me. I was forced to get it or lose my job despite 1) working remotely, 2) having already had Covid and 3) being healthy and not at risk of Covid death but being the largest risk for myocarditis.
Is that when you entered that era? Or did you enter it when you were a newborn in the hospital, or a kid entering school?
Because, it is always all about you...
Clearly his issue is not understanding its actually all about 'grandma'.
"Think about grandma" was the covid version of "somebody think of the children"
Truly, it's the same moralizing appeal-to-emotion but with a different target ("you care about grandma, right? you wouldn't want her to die, right?"). I've always felt it was strange that the argument was (and still is!) largely blindly supported on HN, like haven't we heard this one before?
It's about protecting each other, basic empathy. Doing the bare minimum to and taking miniscule risk to protect the lives of people around you. Sorry that's hard to understand.
It is 'hard to understand' if you get harmed in the process. Hence the jokes about 'doing it for grandma', or ' screwing yourself over with lifelong complications for someone who's already 80.'
(comment deleted)
That's the definition of a personal decision.
I might decide to shit on your front porch every morning. It is the definition of a personal decision.
> I was upset to enter a medical era

Did we enter a new era or where you not paying attention or affecting you before?

Reminds me of the old adage of:

Q: "Why is no one speaking about this?"

R: "Is no one talking about this, or are you just 20 and its the first time you are hearing about it?"

Americans are so silly. Resentful of being told to do anything for their own good or the good of others because of “individual liberty”, yet so willing to lick the boot of the police state and corrupt crony capitalists. Good news for you is that Elon went in and set the bureaucrats straight, so enjoy your diarrhea and glass in your food.
> I was upset to enter a medical era where bureaucrats were forcing medical decisions on me

We've been in that era your whole life.

I thankfully figured out my young children didn't need COVID vaccines. A little grumpy that the medical profession pushed them on children when they really did know that children weren't at risk nearly as much by then.

Sloppy thinking like this is how we get RFK, love him or loathe him.

Except that your children are still vectors for getting others sick. Vaccines are there not just for you but your community.
Vaccines that have a large impact on transmission and infection are there not just for you but for your community.

The covid shots were good against hospitalization and death in older folks, but they were not great at preventing infection or transmission (despite what you may have gleaned from the speakers blaring ads in every public setting for all that time).

You can fall back to the "flooding the hospitals" argument, that works a little better here.

You're misinterpreting data here. You are conflating the fact that the clinical trials didn't measure infection/transmission (which is very hard to do in a clinical trial) with the distinct claim that they didn't reduce transmission in reality.

The vaccines were extremely effective at reducing transmission during the first waves of COVID, where such an intervention was most valuable. And due to viral growth dynamics, even small reductions in transmission yield big net outcomes.

50% - 70% reduction in transmission: https://www.nejm.org/doi/full/10.1056/NEJMoa2116597

Later waves made the vaccine much less effective at reducing transmission, but still highly effective at reducing hospital utilization which is (despite your snarky aside), extremely valuable. Fatality rates doubled when ERs hit full capacity.

You're ignoring reality here. Everybody knows that the vaccines did not prevent transmission. The masks were far more effective at preventing transmission.
Maybe you should hang out with a different "everybody" if they systematically believe untrue things
Ah, one of those "everybody knows" argument that is on the level of "everybody knows that Napoleon was short".

It's not completely wrong but it ignores important context. The part you are leaving unsaid is that the vaccine reduced transmission even if it didn't prevent it completely. 80% reduction is a significant amount.

Wearing masks on top of that was the sensible thing to do.

All I'm saying is if you sum up the time (between vaccine release and today) that a person was strongly protected from covid infection and transmission, it's a relatively small portion of that time.

Thats my pushback against gp's argument that you have to give this thing to your young kids to protect me.

I suspect that you and GP and GGP are talking about different time scales.

Vaccinating your children for COVID during peak COVID was the right thing to do both for them and for the adults they interact with.

Vaccinating your children for COVID today is much lower ROI for them and anyone around them.

Vaccinating your children in general is very much the right thing to do, both for them and for anyone around them.

I struggle to think of a decision or conversation where the relevant metric is "what % of time from vaccination until today were you protected" and I doubt that's what GP was discussing either.

> allowed life to returned to normal at least a year earlier than otherwise.

Life still has not returned to normal. Supply chains have been destroyed. The global economy has been destroyed. After they gave up on the Covid Lockdowns, they immediately switched over to the Ukraine War. And then they switched to the Iran War and the Strait of Hormuz. And now they are pushing the AI data centers, because apparently they don't care about Climate Change anymore.

What are the reasons for the hate of the COVID vaccine?
There is a legitimate discussion of what can be mandated you do to your body.

However, that discussion was largely side-tracked by the massive amount of disinformation (eg, "Plandemic") that circulated online. There are people who to this day swear that COVID-19 was just like the flu and simultaneously claim that the vaccine spike proteins have killed around 20M people. Not just crackpots, but people with reach, like Brett Weinstein on Joe Rogan's podcast.

> There is a legitimate discussion of what can be mandated you do to your body.

But we have already protocols and frameworks on public health.

Also plenty of other medical choices are taken with way less input of experts (see abortion discussions for example)

Not sure, the midst of a global crisis, with almost universal scientific approval is the time to have a long discussion on bodily autonomy on countries like america where 50% of people cant read at a 6th grade level.

> There is a legitimate discussion of what can be mandated you do to your body.

There is a legitimate discussion (dating back at least to Typhoid Mary (1) ) on excluding people from public spaces when the refuse to take basic public health measures. Taking a vaccine for a spreading deadly pandemic is one of those measures.

Doing something so violently anti-social is not simply a "bodily autonomy" issue, and framing it only as such is deeply misguided in a way that seems particular to some USA norms.

1) https://en.wikipedia.org/wiki/Mary_Mallon

I got the covid shot and every booster. I have no qualms about mRNA messing me up, and I think it was a tremendous life saver. As stated, there was also a ton of misinformation floating around, and people believed that misinformation.

The thing is most of those people made rational objections. The problem is their reasoning was based on false information. They didn't see it as being anti social as they thought the drug was a boondoggle, untested, and that covid wasn't serious. I disagree with all of it, but it is important to understand why they objected, and not just saying they are selfish or antisocial.

[delayed]
> her "rational objections" were not be-all and end-all of the situation.

I hope this is not what you think my position is.

If you want to change someone's mind, you need to understand it. If someone believes false information, and if they are driven my emotion due to everything they've heard, then giving them a bullet list of facts will not change their mind 95% of the time.

You've probably heard of the term "steel manning" when arguing with someone. If you cannot state the other person's argument in a way that they agree with, then you are just talking past each other. If you can state their position as well or better than they can, now you in a better position to change their mind.

If your goal isn't to change their mind, then go ahead, just keep calling them stupid and making no progress with them.

On the advice of counsel, I respectfully decline to answer, based upon my rights under the Fifth Amendment of the Constitution.
The main reason is that the vaccine didn't work, but made some people a lot of money.
Mostly that it was forced unneccessarily on everyone, even those who did not benefit from it, if I had to guess.
Forced on everyone? That's a thing that didn't happen.
Uh, THAT'S the part you're going to try to challenge me on? You lived through 2020, right? Even people in this very website were supporting mandatory vaccinations. Where if you didn't get vaccinated, you couldn't keep your job or academic prospects, leave your house, or even go to most social gatherings.

I cannot believe the people that supported such measures at the time now turn around and say "well, we didn't literally pin you to the ground and force you to take it. So therefore, it was completely voluntary and you're responsible for your own choices and we can't be held responsible whatsoever."

Yes, that is. Are there other baldfaced lies I should be focusing on instead?

The vaccine wasn't "forced on everyone". Pointing to specific people for whom it was forced isn't "everyone".

Well in that case, yeah sorry requiring it to participate to civilized society to any significant degree is essentially no different than flat out forcing it upon people.

If the alternative is living in the woods not being able to go outside, that is obviously not a realistic compromise.

Also a thing that didn't happen.

Do you have an allergy to the truth or something? Or maybe a difficulty distinguishing your paranoid delusions from reality.

In my state there were multiple instances of the police literally being called to people just hanging out outdoors.

It's hilarious you try to deny our lived history, we have a thing called memory.

Uh huh. Why should I believe this any more than your hallucination about "everyone"? You've demonstrated a complete lack of cognitive quality control.
I for one would like to see the data rather than a press release. Is this even serious? A press release with no link to outside twitter?

I feel like everything companies, and presidents, say now is directly geared to triggering AI trades.

The only thing they are looking at with this drug is people living one more month over existing drugs.

THIS IS NOTHING.

"The median PFS (progression-free survival) for KEYTRUDA was 5.5 months (2-week group) and 4.1 months (3-week group) compared to 2.8 months for ipilimumab (HR 0.58, P<0.00001 for the KEYTRUDA groups vs. ipilimumab,"

https://www.merck.com/news/keytruda-pembrolizumab-mercks-ant...

The median PFS (progression-free survival) for KEYTRUDA was 5.5 months (2-week group) and 4.1 months (3-week group) compared to 2.8 months for ipilimumab (HR 0.58, P<0.00001 for the KEYTRUDA groups vs. ipilimumab, 95% CI, 0.46-0.72 for 2-week group and 0.47-0.72 for 3-week group, respectively). The estimated 6-month PFS rates for the KEYTRUDA and ipilimumab arms were 47.3 percent, 46.4 percent and 26.5 percent, respectively. One-year OS for KEYTRUDA was 74.1 percent (2-week group) and 68.4 percent (3-week group) compared to 58.2 percent for ipilimumab (HR 0.63 [95% CI, 0.47-0.83, P=0.00052] for the 2-week group and HR 0.69 [95% CI, 0.52-0.90, P=0.00358] for the 3-week group). At the time of analysis, median overall survival was not reached in any treatment group.

No it isn’t. They did a test with great specificity and got undeniable P values. Now they can refine the action and start saving people. This is a huge, huge win.
1. That's not what progression-free survival means.

2. I don't think AI was mentioned once in this press release.

3. This drug was approved for trial in 2014, so if it had something to do with deep learning, that would actually be a massive announcement.

4. The paragraph immediately following the one you clipped talks about Overall Response Rate (ORR) and throughout the release they discuss Overall Survival (OS).

5. This is not "NOTHING" in statistical terms, but even more so to people with melanoma.

Interjecting with a fact. Moderna described the neoantigen immunogenicity prediction algorithm they used to design the vaccines as “a deterministic machine learning (ML) algorithm,” so it may be a small neural network or more traditional algorithm, probably not deep learning.
Sorry--I was unclear. I was specifically responding to the OP's "CEOs these days want to join the AI hype wave" claim. My point was that the "hype wave" OP is referencing is really about deep learning, not what we think of as traditional statistical learning. Even the dedicated medical AI startups of that era, like BenevolentAI, were still doing traditional ML in 2014. So if Moderna really was trying to join the "AI hype train" and announce a deep learning result with this treatment, they'd be announcing that they successfully trained a deep neural network for drug discovery 12 years ago.
My interpretation of "triggering AI trades" is about tricking AI into buying stock, not tricking people into buying AI stocks.
1. That's not what progression-free survival means.

I was not pointing to PFS as OS.

2. I don't think AI was mentioned once in this press release.

I did not say it was. I said it was written FOR AI trading algorithms to read and invest on.

4. The paragraph immediately following the one you clipped talks about Overall Response Rate (ORR) and throughout the release they discuss Overall Survival (OS).

Someone noted this was an earlier study. The newest study does not even have data out and yet here we are, investing on a press release.

5. This is not "NOTHING" in statistical terms, but even more so to people with melanoma.

You are talking to someone whose father died of pancreatic cancer. "Pancreatic cancer has a higher mortality rate compared to melanoma, with an estimated 52,740 deaths from pancreatic cancer in 2026, while melanoma has a significantly lower death rate. Additionally, the 5-year relative survival rate for pancreatic cancer is only 13.7%, compared to higher survival rates for melanoma."

What they did for my father was worse than nothing.

Yes every cancer is different, responds to different therapy, and with different survival rates. However, cancer treatment, as a whole, works. Oncologists do not prescribe incredibly intense treatments like chemotherapy out of nowhere. Chemotherapy is often not curative. Instead, it's used to both prolong life and improve quality of life.

Dying from late-stage cancer is often painful and miserable. It might be shocking, but getting just a few more months from chemo can provide a greater quality of life. Keyword can. Every oncologist is different with different recommendations, and they explain the risks very concretely. There is always an option to refuse treatment, but bear in mind it's not just about how quick you die. It's also about how much that dying sucks.

They told my father Chemo woudl add six months on his six month estimated lifespan. He died in two months cause the chemo blocked his liver. My sister in law was a chemo nurse and begged him not to get it. He died on loads of morphine. His last words were "It's all a scam!"

Sorry, you have no idea. Talk to a chemo nurse.

Huh? How would chemo "block his liver"? Do you mean that he had a liver metastasis that the chemo didn't help with?
Chemotherapy can damage many organs including the liver. See "Organ Damage" on Wikipedia: https://en.wikipedia.org/wiki/Chemotherapy

A friend's sister beat colon cancer over ten years ago but now is having liver problems that took a while to pin down. They warned her she'd probably die in a couple years from the cancer without Chemo, but would have this risk long term and it recently showed up.

Talk to a chemo nurse? I've gotten two different chemo regimens. Yes, I know chemo has a risk because all medicine has a risk. I'm sorry for what happened to your father, but that doesn't fucking mean chemo is a scam. It saves lives, I should know.
you're also looking at a different, older study. Keytruda is a little strange in that it has a very long tail in survivorship, works best in certain cases, and median PFS isn't a really great metric.
Substantially better link:

https://www.merck.com/news/merck-and-moderna-announce-phase-...

Still no actual Phase 3 data presented.

Yes, however the trial succeeded. But by "how much", is not yet released. This trial was not against placebo, but the already existing, and effective Keytruda treatment.
I believe both were done with Keytruda. Control was Keytruda without the mRNA treatment.

So this should answer the question of "how much better is this with the best we currently have".

We're in the dark ages of "effective" at the moment. But now we're starting to get there.
In other news, your barber thinks you need a haircut. Until there is a proven net overall health benefit to this therapy, I wouldn't waste much ink on it. Also, can someone please tell me how one controls the dose for an mRNA therapy ?
If you actually had melanoma (a very aggressive type of skin cancer) you would be glad for one more chance of maybe still being alive a few years from now.
How does one control the dose for anything? Why are you worried about mRNA vaccines in particular?
Radiation dose, for example, is precisely measured - we know exactly how much radiation the body is exposed to during therapy. mRNA products work by making our cells produce the desired protein/drug. There is no way of controlling how many cells are producing the drug and for how long they are producing it - ergo there is no way of controlling the dose. I hate to break it to you but they have found people producing spike protein over 3 years after getting the covid shot.
Spike proteints: new production or residual fragments?
Citation on the spike protein production?
A successful phase 3 trial means that the drug is actually effective, not just safe. That's what they test in phase 3.
As there is no safety data available on this new drug, what makes you say it is safe ? Pre 2020 it took an average of 10 years to release a new vaccine - why do you think it took that long ?
Cancer treatment is different. We have a high tolerance for side effects because many cancers are aggressive and deadly. It's a risk-analysis. If your odds of dying from cancer in the next year are 50%, and the drugs have a 25% chance of killing you, then the drugs are worth it.

In actuality, even extremely aggressive therapies like high-dose chemotherapy with stem-cell transplant have shockingly low risk of death. Less than 5%. Bear in mind, that's for a therapy that literally wipes out all of your bone marrow. You know, the part of your body that produces your blood? Your body stops making blood and your immune system. And yet, we've gotten the death rate as low as it is.

According to Gemini, Moderna uses machine learning to speed up sequence selection and mRNA optimization. After all, this is not a mass-produced vaccine, but a personalized one.
Will this targeted approach be beneficial to other cancer types? Is there any data or theory about this class of drugs as a more general therapy?
Individualized immune cancer therapy has been touted as the next big thing for half a century. It's nothing new, and with few exceptions, such as skin cancer, has failed to yield much. scientists, for decades, have tired to harness the immune system to attackcancer and it almost never works.
Personalized mRNA vaccines are in fact, extremely new, and only made possible by recent advances across multiple fields. This comment reveals a total lack of basic understanding on this topic.
I believe the comment was talking specifically about immunotherapy rather than personalized mRNA. But I'd agree it's still misinformed as immunotherapy has been a game changer across multiple cancers.
u/danjl was originally asking about "this class of drugs", which is more reasonably interpreted as referring to personalized mRNA vaccines rather than the much broader concept of (personalized or not) immunotherapy.

The comment is wrong because it's stupid. Just because we've known that personalized immunotherapy was a promising idea for a long time, and have been trying it with the limited tools we had (CAR T being the poster child, and while an incredible advancement for blood cancers and many other diseases, it is notoriously dangerous and expensive), does not mean we had the technology to accomplish it. Today's results are only possible because of recent advancements in multiple fields, and to respond with "they've tried immunotherapy for decades" is profoundly ignorant. You may as well say, "scientists have been trying to cure cancer for years."

> This comment reveals a total lack of basic understanding on this topic.

My thoughts as well, Keytruda alone has been a miracle to many many people at this point (quoting GP: "scientists, for decades, have tired [sic] to harness the immune system to attack cancer and it almost never works."), I frequently get ads for local CAR-T centers (unthinkable a little over a decade ago)

> Individualized immune cancer therapy has been touted as the next big thing for half a century. It's nothing new, and with few exceptions, such as skin cancer, has failed to yield much. scientists, for decades, have tired to harness the immune system to attackcancer and it almost never works.

"Almost never" is doing a lot of work. You may be aware that most drugs fail over the course of development and human trials?

Anyway, checkpoint inhibitor therapy is a massive boon to oncology and was only brought into widespread use over the past 15 years.

> and with few exceptions

Those few exceptions have been monumental in how they've changed cancer treatment. Skin cancer has been particularly well treated with immunotherapy, but other cancers have also benefited from the exact same research and drugs (as it turns out, the specific mutations the immunotherapies like Keytruda target express in other cancers). The reason skin cancer gets so much attention is because it's one of the most commonly diagnosed and treated cancers. (Colon is more common, I believe, but it often doesn't get detected. Get your colonoscopies folks).

It has moved fast enough that I've heard from multiple oncologists that the all 5 year survivability numbers are dated because the treatments are newer than the studies.

We've come a LONG way in a very short period in terms of cancer treatment. It still sucks, but not as much as it once did.

Non-small cell lung cancer (NSCLC) treatment has been revolutionized by the checkpoint inhibitors (as well as some other drugs targeting specific mutations).
I don't like words like "revolutionized" as they set wrong expectations.

For non-small cell lung cancer (NSCLC) treated with immune checkpoint inhibitors (such as pembrolizumab, nivolumab, or atezolizumab), median overall survival typically ranges from about 10 to 20 months in advanced stages as opposed to 10-12 months for standard chemotherapy treatments.

That's great news especially as they would likely be better tolerated. Bt let's please not call living a handful of months longer as a 'revolution'.

Every cancer is different. Immunotherapy is highly effective, even curative, for some cancers. For my cancer, chemotherapy is curative, while other cancer's just shrug chemotherapy off like it's nothing.

Having a plethora of drugs and treatments is vital because cancer is not "one thing". Each type of cancer will respond better to some treatments than others.

Yes, mRNA vaccines are promising for many but not all cancer types, and there are many ongoing clinical trials. There's also a lot we yet don't know about how to design them.

Here's a great blog post on this, "How to build a cancer vaccine, and whether they will work this time": https://www.owlposting.com/p/how-to-build-a-cancer-vaccine-a...

Here's the blog post I wrote on personalized mRNA vaccines: https://hedonicescalator.substack.com/p/did-paul-conyngham-r...

One of the leading problems is that we don't know how to pick the right neoantigens (mutant cancer proteins) which can trigger the optimal immune response.

Moderna used a simple heuristic, "how likely is this antigen to show up on the cell surface?" which makes sense, since an antigen has to show up on the cell surface for the immune system to see it. But there's so much missing from this model, and we just don't have enough data. Failures in clinical trials of mRNA vaccines may well be caused by this problem. (Yes, this is a good problem for AI, if we can get enough data).

mRNA is a general technique for targeted cancer therapy. It's the message RNA containing the instructions from a gene to create a specific protein. It's much easier to work with, reprogrammed, manufactured, and delivered. There're a number of approaches to use mRNA against cancer cells. One is using cancer related antigens, similar to the vaccine approach. mRNA is programmed to generate the antigen proteins in the body, which are attached to the cancer cells. The body's T-cells can then attack the tagged cancer cells.

The problem now is finding the correct antigens targeting the cancer cell type. Cancer cells are similar to health cells. You don't want to program a mRNA to generate antigen proteins that target health cells, which causes autoimmune problems.

This is not quite correct. An mRNA vaccine that creates healthy antigens will fail because it won't do anything, not because it will trigger autoimmune issues. Your cells are already covered in normal antigens, and your immune system already knows to not attack them. It is true that it is difficult to find the right antigens to target, but the reasons for that are more complicated.
There are a zillion news sources for this: OP what would possess you to pick the (largely dead) right wing Musk-owned Twitter ("X" )?
Has more posts than HN, yet would you describe this platform as 'dead'?
Yeah while a positive step, I do not understand a 90% stock increase.
Oh yeah? Show me your discounted cash flow analysis.
See it as $60B value total among Moderna and Merck for the success of the trial, not 150% increase.
So they added $30B market cap for a drug that would do by my napkin estimate about ~$7B average annual sales for 20 years as a front line treatment. Based on that alone, $30B in added market cap isn't enough. How much would you pay for $150B in high margin revenue?

But even more is the validation of this new custom MRNA novel cancer treating platform. If you take this data result to be a 'proof of concept', the expected value of the rest of their pipeline is suddenly worth a lot more.

Of course, this is all assuming the data is accurate and the drug gets approved, neither of which are 100% guaranteed.

My father is currently dying of malignant melanoma with brain metastasis...

I wish this treatment was available a few years ago.

That is devastating. How are you doing?
Coping. It's been a long process. When I saw his first diagnosis (he was diagnosed very late) I read the papers and knew that his chances are slim.

It's hard seeing him like this. 63 years old. Going from completely functioning to non-verbal in 3 months fucks you up

Immune therapy didn't help? Darn.
Immune therapy is hit or miss. Friends lung cancer was exquisitely sensitive to it. Stage 4 to no sign of disease. Another friend with melanoma immune therapy didn't seem to help at all.

Melanoma is usually completely resistant to traditional cancer drugs. So that sometimes immune therapy works is very welcome.

Sadly it didn't. And it also lead to extreme bleeding in the brain metastasis that we had to stop it. Switched to BRAF/MEK inhibitors and that looked good for a few months until it didn't anymore.
I'm so sorry to hear that, but thank you for sharing your story to highlight the importance of this!
My dad died 30 years ago after it spread to his liver. He was in the study at duke for what is today the standard treatment line for immunotherapy. I hope he was able to help. He died 9 months after his diagnosis.

Enjoy the time you have with him now and be grateful for all the years you've had. Nothing is going to make the loss of a parent "OK" and it will hurt no matter if you see it coming like you are or it's a surprise.

Remember to breathe.

My father has gastric melonama and pretty much last few days left — does someone with knowledge know if this vaccine can be of any help? Or any registry available?
Deepest sympathies, and I'm no oncologist - but I think that'd be like trying to patch hull of the Titanic after her stern has lifted out of the water. So many cascading failures are in motion by then that saving him really isn't possible.
Some say that mRNA therapies are getting better and better on a wider range of tumor types, anybody from the industry can confirm ?
Phone cancer is way worse and more prevalent than skin cancer. And it looks and acts the same. Let me know when they find a cure.
A comment from Derek Lowe:

https://www.science.org/content/blog-post/merck-and-moderna-...

>Postscript: Our Secretary of Health and Human Services of course cancelled $500 million in mRNA vaccine R&D contracts (22 different programs) last year, and cited a pile of misinformation (and cluelessly misunderstood research citations) to justify it. Our Director of the National Institutes of Health was apparently just fine with this decision and cited mRNA vaccines’ alleged failure to “earn public trust” as one of his reasons, along with public statements that “the mRNA platform is no longer viable”. I have a number of suggestions for each of these individuals and their supporters about how they might spend the rest of their day, and will be glad to send details if they contact me.

How are BioNtech's trials doing?

Are these two companies the ones to cure cancer (for the rich, being that these therapies require custom bio engineering).

I got my first one at age 27. A third just got removed. Living with the constant mole vigilance of that is rough, but I am glad I've learned to identify them. I think knowing the ABCDEs of it should be more widely spread, as removing a mole is a much nicer alternative to having to take margins in a highly mobile place.
Agreed. As a reminder here are the ABCDE arguments to get extra worried about a mole.

Asymetrical (shape of the mole)

Border (irregular? Unclear delimitation?)

Color (has it multiple colors?)

Diameter (has it a >6mm diameter? An indicator that it might start vertical growth iirc)

Evolution (has it changed recently?)

I wish people would find a decent source for these stories in order to post them on here instead of sending us to a tweet. I'm not on Twitterx and it's a mini nightmare on a mobile browser
Contrary to popular belief, twitter/x is completely fine.