Clinical Failure Rates over the Decades: Yikes

EEA-3167 about 2 hours ago 17 commentsRead Article on science.org

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roenxi•4 minutes ago

[delayed]

jcims•about 1 hour ago

Roughly equivalent to the percentage of startups that fail.

Lower numbers don’t mean we’re doing better, it means we’re trying less.

levocardia•about 2 hours ago

I'm actually surprised it isn't going up over time. That is naively what you would expect as the low-hanging fruit is plucked. So the fact that it's been stable is probably a sign that scientific advances are roughly keeping pace with the (presumably) increasing challenge of finding ever more targets for drugs.

CamperBob2•about 1 hour ago

He points out that it basically has gone up, since the 80s and 90s brought some new therapeutic targets and approaches that by now have been mined out.

AbsurdCensor•about 2 hours ago

As someone who works in research, this isn’t surprising at all. It’s hard to find something that treats (well most often reduces symptoms) of a particular disease. It’s even more difficult to find something that is also safe at the dose level it takes to treat said disease. Are there faster ways to do this? Probably not. AI is only going to help out so much, just like automated drug screening only helped so much since its introduction in the 90s.

perpetuallunch•about 2 hours ago

This is completely unsurprising, and this:

But let’s think about that 91% failure rate for a moment. When I bring this up in presentations, I invite the audience to consider what the auto industry would look like of 91% of new car designs proved unable to roll out of the factory, or if 91% of new airliner models were unable to leave the ground

Is an utterly irrelevant comparison. For physical thing we have engineering, and the practical application of the trades and craft, trial and error.

For modern medicine, we're only just starting to come out of the wild west era. Or perhaps slightly further along than that.

levocardia•about 2 hours ago

Indeed, I suspect the failure rate of, say, new jet engine designs is rather high as well -- those failures just never get reported in a federal repository, unlike RCTs, since they never make it out of the simulator or the prototyping lab. And we have, comparatively, much better computational models of how airplanes fly than how cancer cells mutate. FWIW this clinical stat is far better than Edison's supposed lightbulb-idea failure rate!

TheOtherHobbes•about 2 hours ago

Jet engine design is iterative, and the basic principles are well-understood.

Drug design seems a lot more binary. You can find a new pathway, but drugs themselves are fairly simply molecules, and you can't iteratively 'fix bugs' the way you can in an engine or a piece of software.

The engine is a given, it's almost astronomically complicated, you know a lot less about how it works than you'd like to, and you're trying to change how it works while it's running without breaking anything, using tiny rigid parts that have to snap into place correctly and can't be bent to fit.

High failure rates aren't surprising.

estearum•about 1 hour ago

> For modern medicine, we're only just starting to come out of the wild west era. Or perhaps slightly further along than that.

Why do you say that? What's the evidence? We continue to have virtually no clue how to make drugs, per TFA.

perpetuallunch•33 minutes ago

Targeted gene therapy, cancer survival rates, trauma care, the advancements in hip and knee replacement, all sorts of surgery, HIV is now a non-issue with the right care. The list goes on.

Drug development is a hard problem because the solution space is poorly constrained: biochemistry is complex and messy, expecting one chemical substance to have narrow positive effects is probably hopeless.

debo_•about 1 hour ago

There's an alternative that is slowly emerging. Many clinical trials "fail" but the drug candidate in question works really well for identifiable subsets of the participants. Right now pharma companies won't bother pursuing those drugs because they can't market it broadly. But it's still possible these drugs could help people in the future.

estearum•about 1 hour ago

Not really an alternative if you can't predict who those candidates are prior to spending a hundred million dollars putting the drug into a broader group of people and then retroactively saying "oh wait now we can 'identify' who it works in."

If they could do that today, they would. Trial criteria are already incredibly narrow specifically to try to encode as much of this knowledge as the company has prior to starting the trial. But it empirically turns out they don't have nearly enough to matter.

It's really not a problem that pre-filtering to that responders group produces too small a market. There are plenty of drug programs going after way-too-small markets because of all these wacky perverse incentives created by insurers and regulators to incentivize the creation of billion-dollar++ drugs for diseases virtually no one has.

calf•about 2 hours ago

Why does he conclude there is no alternative? He already argued this would be strange in other disciplines. So reform it.

mlyle•about 2 hours ago

If you can think of a way that you can have a much higher chance than 9% of success in getting a useful treatment to market, you can make a boatload of money. Go ahead, reform it.

estearum•about 1 hour ago

You can go make literally a trillion dollars if you can come up with an alternative.

analog31•about 1 hour ago

It's not for lack of trying. People are definitely trying to find better ways of finding stronger candidates earlier. People are trying to gain a more precise understanding of disease mechanisms.

There are breakthroughs that I could have never imagined such as mRNA vaccines.

EA-3167•about 2 hours ago

How? He’s saying that he can’t think of any good ones, and in my experience that’s true of most informed people. This is one of those hard problems that needs solutions, and so far the present system is the best anyone has managed.