In short
a16z Podcast Episode Summary: Faster Science, Better Drugs
Episode Overview Title: Faster Science, Better Drugs Host: Erik Torenberg Guests: Patrick Hsu (Co-founder, Arc Institute), Jorge Conde (a16z General Partner) Focus: The episode explores the potential of accelerating scientific research and drug discovery through advanced computational methods and AI, specifically through the concept of "virtual cells."
---
Key Themes and Discussions
- The Vision for Faster Science
- Objective: The primary goal is to make scientific research as fast as software development. Patrick Hsu emphasizes the importance of improving the human experience through scientific advancements.
- Virtual Cells: Hsu describes their moonshot project at the Arc Institute, which is to create "virtual cells" that simulate human biology using foundation models.
- Challenges in Scientific Research
- Slow Research Processes: The conversation highlights several reasons why scientific research is sluggish:
- Incentive Structures: There are systemic issues in how research funding and career progression are structured within academia.
- Multidisciplinarity: Research often requires collaboration across various domains, which is hampered by physical and institutional divides.
- Complexity of Biology: Understanding and simulating biological processes is inherently more difficult than tasks in fields like natural language processing or image generation.
- AI's Role in Drug Discovery
- AlphaFold Analogy: The discussion references AlphaFold as a benchmark for success in modeling, comparing it to future aspirations for virtual cells that could predict cell behavior with high accuracy.
- Drug Discovery Bottlenecks: Despite advancements in AI, the industry still faces significant hurdles, including high failure rates in clinical trials and the complexities of ensuring drug safety and efficacy.
- The Science-Business Interface
- Transition from Research to Commercialization: Jorge Conde discusses the transition of biotech startups from selling software to competing for R&D budgets, emphasizing the need for effective drug development strategies.
- Capital Intensity: The high costs associated with drug development and clinical trials are identified as major barriers to industry growth.
- Future Outlook and Innovations
- Potential Breakthroughs: The speakers express optimism that upcoming innovations in AI and biological modeling could lead to meaningful reductions in discovery timelines and improvements in drug efficacy.
- Importance of Collaboration: Emphasizing the need for collaboration among diverse scientific fields to harness the full potential of emerging technologies.
---
Key Takeaways
- Focus on Virtual Cells: Creating predictive models for biological systems can significantly streamline the drug discovery process.
- Addressing Systemic Issues: The need to reform research incentives and collaboration structures in academia to foster more efficient scientific progress.
- AI Integration: The expectation that AI will become a native part of drug discovery processes, enhancing the ability to predict and mitigate failures in clinical trials.
---
Resources
- Guest Links:
- Patrick Hsu on X: [@pdhsu](https://x.com/pdhsu)
- Jorge Conde on X: [@JorgeCondeBio](https://x.com/JorgeCondeBio)
- Listen to the a16z Podcast: Available on [Spotify](https://open.spotify.com/show/5bC65RDvs3oxnLyqqvkUYX?si=3E8B3qT9TyiwAHJ7JnaKbg) and [Apple Podcasts](https://podcasts.apple.com/us/podcast/a16z-podcast/id842818711).
---
Conclusion The podcast episode "Faster Science, Better Drugs" presents a hopeful vision for the intersection of AI and biology, with the potential to dramatically transform how scientific research and drug discovery are conducted. Through the innovative concept of virtual cells, the discussion underscores the importance of multidisciplinary collaboration and the pressing need to reform existing structures in the scientific community.
Written by AI. May contain mistakes. Listen to the episode to check what was said.
Transcript
Automatic transcript. May contain errors.0:00I want to make science faster. Arduous shot is really to make virtual cells at ARC and simulate human biology, the foundation models. Why are we so worried about modeling entire bodies over time when we can't do it for an individual cell? We can figure out how to model the fundamental unit of biology, the cell, then from that we should be able to build. My goal is to really try to figure out ways that we can improve the human experience in our lifetime. There are a few things that if we get them right in our lifetime, we'll fundamentally change the world. Today we're talking about making science move faster.
0:38My guests are Patrick Schu, co -founder of the Ark Institute, and A16Z Journal Partner, Jorge Conde. We get into virtual cells and foundation models for biology. Why science gets stuck in incentive knots? What an alpha -fold level movement for cell biology could look like, and how breakthroughs translate into actual drugs and business outcomes. Let's get into it. Patrick, welcome to the podcast. Thanks for joining. Thanks for having me on. I've been trying to have you on for years, but finally I could get your time. Here I am. I'm excited to do it. It's going to be great. For some of the audience who aren't familiar with you and your work at ARC and Beyond, how do you describe what's your moonshot?
1:15What is what you're trying to do? I want to make science fast. right? You know, we can frame this in high level philosophical goals like accelerating scientific progress. Maybe that's not so tangible for people. I think the most important thing is science happens in the real world. If it's not AI research, which moves as quickly as you can iterate on GPUs, right? You have to actually move things around. Addams clear liquids from tube to tube to actually make life changing medicines. And these are things that take place in real time. You have to actually grow cells to choose an animals. And I think the promise of what we're doing today with machine learning and biology is that we can actually accelerate and massively paralyze this.
1:58And so our moonshot is really to make virtual cells at ARC and simulate human biology with foundation models. And you know, we'd like to figure out something that feels useful for experimentalists, people who are skeptical about technology, you know, they just want to see the data and see the results that it's actually the default tool that they go to use when they want to do something with cell biology. Okay, hold on, let's back up. Why science so slow in the first place? Like, whose fault is that? Whose fault is that? Now, that is a long one. We should get into it. We should get into it. It's really multifactorial.
2:29Okay. Right? It's this weird gordian knot that ultimately comes down to incentives, right? Comes down to, you know, people talk a lot about science funding and how science funding can be better. But it's also about how the training system works, right? How we incentivize long -term career growth, how we try to separate basic science work from commercially viable work, and generally the space of problems that people are able to work on today. I think things are increasingly multidisciplinary. It's very hard for individual research groups or individual companies to be good at more than two things, right?
3:08You might be able to do, you know, computational biology and genomics, right? So, you know, like chemical biology and molecular glues, but, you know, how do you do five things at once? It's increasingly hard. And we really built ARC as an organizational experiment to try to see what happens when you bring together neuroscience and immunology and machine learning and chemical biology and genomics all under one physical roof, right? If you increase the collision frequency across these five distinct domains, there would hopefully be a huge space of problems that you could work on that you wouldn't be able to.
3:44Now, obviously, in any university or any geographical region, you have all of these individual fields represented at large across these different campuses, but people are distributed and you want everyone together. Okay, but if I may, so I would have thought a university was an attempt to bring in multiple disciplines under one roof. You're saying it's not. It's too diffuse. It's across an entire campus. Okay. So the physics, like literally the physical distance creates inefficiency. That's part of it. And I think the other part is folks have their own incentive structures, right? They need to publish their own papers.
4:20They need to do their own thing and, you know, make their own discovery. And you're not really incentivized to work together. I think in many ways in the current academic system and a lot of what we've done is to try to have people work on bigger flagship projects that require much more than any individual person or group or idea. That's cool. So that's sort of the original hypothesis for the arc institute is if you can bring multiple disciplines together to increase the collision frequencies, you said. And if one could remove some of the cross incentives that may exist in sort of traditional structures, the combination of those two things will make science faster.
4:57Yeah. Yeah, these are absolutely part of it. We have two flagship projects one trying to find Alzheimer's disease drug targets, the other two make these virtual cells. And I think it's not just the people and the infrastructure, but also the models will hopefully literally make science faster that you could do experiments at the speed of forward passes of a neural network if these models could become accurate and useful. Yeah, so that will be one thing that solves the length of discovery. risk you can press the time discovery takes naturally by just throwing technology at the problem at the risk of oversimplifying.
5:31Well, we're we're techno optimists here now. We are. Yeah. Why has AI progressed so much faster in image generation and language models than biology and if we could wave a want like what were we excited to speed things up? To be honest, it's a lot easier. Right. Maybe that's a hot take. Right. But It's technology is your than biology. Natural language and video modeling is easier than modeling biology. Correct. And to some degree, if you understand and learn machine learning and how to train these models, you have already learned how to speak. You already know how to look at pictures. And so your ability to evaluate the generations or the predictions of these models are very native.
6:13But we don't speak the language of biology. Right? You know, yeah, I had very best with an incredibly thick accent, right? So we need you're training these DNA foundation models. I don't speak DNA natively. So I only have a sense of the types of tokens that I'm feeding into the model and what's actually coming out, right? Similarly with these virtual cell models, you know, I think a lot of the goal is to figure out ways that you can actually interpret the weird fuzzy outputs that the model is giving you. And I think that's what slows down the iteration cycle is you have to do these lab and the loop things where you have to run actual experiments to actually test with experimental ground truth and you know I think increasing the speed and dimensionality of that is going to be really important.
7:00How much of this is the fact that like you know you talk about you know we speak biology poorly or with a very thick accent. How much of this is like if you're training on an image we can see the image and so we can see how you know how good the output is, what about all the things in biology that we can't see or don't even know exist yet? Like, how can we create a virtual cell and maybe we should come back to what a virtual cell model is, by the way, for the layout. But like, how can we create a virtual cell model? We're not even sure if we understand all of the components that are in a cell and how they function.
7:36People talked a lot about this in NLP as well. Well, there's this long academic tradition in natural language processing, right? And then it was just weird and unintuitive and intensely controversial that you could just feed all this unstructured data into a transformer. And it would just work. And now we're not saying this will just work in all the other domains, including in biology, but I think there is this, you know, controversy around what does it mean to be an accurate biological simulator? What does it mean to be a virtual cell? It's true. We can't measure everything, right? we can't measure, I think, things like metabolites and really high throughput with spatial resolution.
8:13And there are going to be different phases of capability where initially they model individual cells. Then they model pairs of cells. Then they model cells in a tissue and then in a broader physiological intact animal environment. And those are length scales and layers of complexity that will aggregate and improve upon over time. And I think the other kind of non -atutive thing in many ways are the scaling laws that you get in data and in modeling. I'll give you an example, right? There's a lot of discussion molecular biology about how, you know, RNAs, you know, don't reflect protein and protein function, right?
8:50And so, well, we don't have, you know, proteomic measurement technologies that are nearly as scalable as trans -structomic measurement technologies today. like that's the single cell resolution certainly, but we're getting there and you can layer on certain nodes of protein information that you can add on top of the RNA information. But in many ways, the RNA representation is a mirror, right? It might be a lower resolution mirror for what's happening at the protein layer, but eventually what is happening in protein signaling will get reflected in a transcriptional state, right? And so for an individual cell, this may not be accurate.
9:26But when you imagine the massive data scale that we're generating in genomics and functional genomics, right, you start to gather tremendous amounts of RNA data that will read in kind of like what's happening at the protein level at some sort of mirror echo, right? And then that can, you know, be the case for metabolic, metabolic information as well and so on. Yeah. So it's a low pixel image, but we can get sort of zoomed out far enough. We'll get a sense of what's going on. You have to bet on what you can scale today, right? We're able to, you know, scale single cell and transcriptional information today were able to add on protein level information over time.
10:01We'll need spatial information, spatial tokens and we'll need temporal dynamics as well. And we'll, you know, I kind of bucket things into three tiers. There's invention, engineering and scaling. And there are certain things today, biotrachnologically, that are scale ready. And then there are things that we still need to invent, right? And that's part of why we felt like we needed a research institute to be able to tackle these types of problems that we weren't just going to be an engineering shop that's just trying to scale single cell perturbation screens, right? That would be interesting, but in three years, it would feel very dated, I think, right?
10:34And so there's a lot of novel technology investment that we're making that we think will bear food over time. Can we flash out the virtual cell concept? Why that's the ambition we've landed on and what it's going to take to get there or what are the bottlenecks? I would say the most kind of famous success of ML and Biology is alpha -fold, right? And this solved the protein folding problem of, you know, when you take a sequence of any amino acid, what does the protein look like, right? And, you know, it's pretty good. It's not perfect. It certainly doesn't simulate the biophysics and the molecular dynamics, but it gives you a sense of what the end state is with 90 % plus accuracy, right?
11:13And that's the alpha -fold moment that people we'll talk about, right? Where anytime you want to work with the protein, if you don't have an experimentally self structure, you're just gonna fold it with this algorithm. And we kind of want to get to that point with virtual cells as well. And the way that at ARC, we're operationalizing this is to do perturbation prediction, right? Where the idea is you have some manifold of cell types and cell states, right? That can be a heart cell, a blood cell, a lung cell, and so on. And you know that you can kind of move cells across this manifold, right? Sometimes they become inflamed.
11:50Sometimes they become apoptotics. Sometimes they become cell cycle arrested. They become stressed. They're metabolically starved. They're hungry in some way. And so if you have this sort of this representation of universal sort of cell space, right? Can you figure out what are the perturbations that you need to move cells around this manifold? And this is fundamentally what we do in making drugs, right? Whether we have small molecules, which started out as natural products from, you know, boiling leaves or antibodies when we injected proteins into cows and rabbits and sheep and took their blood to get those antibodies, we are basically trying to get to more and more specific probes, right?
12:32And we had experimental ways to kind of cook these up. Now we have computational ways to do zero shot these binders. But ultimately what you're trying to do with these binders is to inhibit something. And then by doing so, kind of click and drag it from kind of toxic gain of function, disease, causing state to a more quiescent homeostatic healthy one. And the thing that is very clear in complex diseases, where you don't have a single cause of that disease is there are some complex set of changes. There's a combination of perturbations, if you will, that you would to make to be able to move things around.
13:09Now, you know, people talk about this classically as things like polypharmacology, right? But, you know, I think we're moving from a, oh, this thing happens to have, you know, a whole bunch of different targets, kind of by accident, to we have the ability to manipulate these things commentorially in a purposeful way, right? That to go from cell state A to cell state B, there are these three changes I need to make first, then these two changes and then these six changes over time. We want models to be able to suggest this. And the reason why we scoped virtual cell this way is because we felt it was just experimentally very practical.
13:50You want something that's going to be a co -pilot for wet lab biologists to decide, what am I going to do in the lab? We're not trying to do something that's a theory paper that's really interesting to read where the numbers go up on a ML benchmark, But you practically can decide what are the 12 things that you're going to do in the lab in 12 different conditions, right? And actually just test them, right? And that's how we kind of enter the the kind of the lab and the loop aspect of model predictions to Experimental measurements to you know kind of improved or RL or whatever model kind of predictions again.
14:26And the goal is to be able to do Encyclical target ID where you can basically figure out new drug targets, Let's figure out then the compositions, the drug compositions you and you to actually make those changes. I think if we could do that, we could make a new AI, like vertically integrated AI -enabled pharma company, right? Which, you know, I think is obviously a very exciting idea today, but I think in many ways, the kind of pitch and the framing of these companies precedes the fundamental research capability breakthroughs. And that's what we're really invested in at ARC is just kind of just making that happen.
15:02and along with many other amazing colleagues that they feel, it's just make this possible for the community. So if the goal is oversimplified for you, like if we wanted to get to the alpha -fold moment where it kind of gives you a useful structure, folded structure, 90 % of the time to use your data point, we wanted to take that comparison in the virtual cell model and we said, okay, 90 % of the time, if I ask the model, I want to shift the cell from cell state A to cell state B, and it's going to give me a list of perturbations. And let's say that at 90 % of the time, those perturbations in fact result in the shifting, experimentally, in the shifting from cell state A to cell state B.
15:45How far away are we from that alpha -fold moment for virtual cells? I find it helpful to frame these in terms of like GBT12345 capabilities, right? And I think most people would agree where somewhere between GBT1 and 2, A lot of the excitement was that we could achieve GPT -1 in the first place that you could see a path with scaling laws of some kind to make successive generations where capabilities wouldn't improve. These are with our EVO, a Dini Foundation model that we developed at ARC with Brian Hee. One of the things that we've seen is that these genome generations are like, quote -unquote, blurry pictures of life.
16:28right? We don't think if you synthesize these novel genomes, they would be alive, but you know, we don't think that's actually also impossibly far away. We'll just have to kind of follow these capabilities. We're generating, we're taking a very integrated approach to attack this problem, right? Where you need to curate public data, you need to generate massive amounts of internal private data, build the benchmarks and train the new, training models and building sort of architectures and kind of doing these things full stack. And we'll just kind of attack this hill climb over time. What's the GPT, I'll say, GPT three moment going to look like, and by that I mean sort of a public release that alters the public's conception of just what's possible here from a capabilities perspective and also inspires a whole new generation of talent to like rush into into into into biology.
17:17Well, the good thing with biology is we have a lot of ground truth, right? their entire textbooks that describe cell signaling and cell biology and how these things work. And so, even without a virtual cell model at all, if you went into Chatchy -Bt or Claude and you basically, you asked us some question about receptor tyrosine -kinae signaling, it would have an opinion on how that works. And so I think you would want the model to be able to predict perturbations that are kind of famous canonical examples of biological discovery. So I'll give you an example. If you've loaded into the model, an IPSE, I kind of an induced play -pone stem cell state, or human embryonic stem cell state, and a fibroblast cell state, right?
18:00Could it predict that the four Yamannaka factors would reprogram the fibroblast into a stem -like state, right? And they essentially rediscover from the model, something that won the Nobel Prize in 2009, right? That would be sort of one really kind of classic example. And then you could go do the inverse. If you have a stem cell, can it discover neurogenin -2? ASCL1, myod, can it find differentiation factors? We'll turn that into a neuron or into a muscle cell or so on. And these are kind of classic examples in developmental biology, but you could also use this to try to discover or recapitulate the mechanism of action of FDA -approved drugs.
18:42right? And so you could say, for example, you know, if you kind of inhibit her too and you know, breast cancer, you know, cell states, right, it would be, you know, you would get this type of response, or it could predict the, you know, certain clones that, you know, will be able to kind of be more metastatic or, you know, they'll be more resistant and they'll lead to minimal residual disease, there I think lots of kind of biological evals that you can kind of add onto these models over time that are really tangible textbook examples as opposed to I think what the kind of early generation of models do today, which is very quantitative things like mean absolute error over the differential express genes and stuff like that.
19:30Those are ML benchmarks and we want to increase the sophistication into something that you could explain to an old professor who has never touched a terminal in their life. That way you talk about textbooks as ground truth. Do you think we're going to find that a lot of the textbooks are wrong? I would say textbooks are compressed, right? So for example, when you look at these kind of classic cell signaling diagrams of A signals to B, which inhibit C, right? That's a very kind of two -dimensional representation of our understanding of a complex system. Right. Right. Right. Right. I mean, yes, textbooks are what they are.
20:10They represent the corpus of reliable knowledge, but everyone knows that they're an incredible number of exceptions. And part of what discovery is is to find new exceptions, right? When you talk about the difference between simulation of biology and the actual understanding, and what would it take to actually be able to model the extremely complex human body? You know, some people don't like the phrase virtual cells because it sounds to media -friendly. It's not rigorous enough, right? But I've always found it funny that, you know, but many people are okay with like digital twins and digital avatars, which talks about modeling biology at a way higher level of abstraction.
20:47You know, I think virtual selves, if anything is actually way more scoped and rigorous than modeling a digital twin or avatar. But, you know, I think these are useful words because they describe the goal and the ambition, right? that no, in the long run, we don't care about predicting the perturbation and responses of an individual cell at all, actually. Obviously, we want to be able to predict drug toxicity. We want to be able to predict aging. We want to be able to predict why a liver cell becomes serotic when you repeatedly challenge it with ethanol molecules or whatever. right? And, you know, these sort of chemical and environmental perturbations should be predictable.
21:34I think you just kind of have to layer on the complexity, right? Like, why are we so worried about modeling entire bodies over time when we can't do it for an individual cell, right? Where we sort of, you know, accept or broadly believe that this is a kind of, you know, fundamental unit of biological, you know, computation, if you will, right? And let's just kind of start there, right? Just like you kind of have to start with, you know, things like math and code and language modeling, right? And things that are just sort of easier to check. You can build super intelligence over time. Yeah, I think that makes sense, right?
22:09That's very sort of lottable and vicious goal that we can figure out how to model the fundamental unit of biology, the cell, then from that we should be able to build. Like in early AI, we just started with like, language translation, there's basic NLP tasks, right? This is long before the tremendous ambitious scope that we have today. And I think we hopefully can mirror that type of trajectory if we're lucky. It seems that biotech and pharma has been a shrinking in interest in the rate of growth. What's it gonna take for these innovations in the science to reflect themselves in business models and in growth for the industry?
22:48A lot of these biotech startups would try to initially sell software to pharma companies and then they would kind of realize, oh, wow, we're like competing for SaaS budgets, which aren't very large. And then, you know, now they're realizing, oh, we have to compete for R &D budgets, right? And I think, you know, there's this narrative from the current generation of these companies that our biological agents will compete for R &D budgets and replace headcount or something like that, right? Just like we're seeing in, you know, agents across different verticals. Right? Whether or not that will, I think, pan out, think depends on just whether or not these things meaningfully allow us to, you know, build drugs more effectively in the pharma context, right?
23:32And I think that's just sort of the most important thing in this industry. And so I think we believe in virtual cells, not just because we think it will be a fountain of fundamental mechanistic insights for discovery, but also because if in the case of success, it could be industrially really useful. But we'll have to see over time. If we have 90 % of drugs failing clinical trials, that kind of means two things and you're not sure what percent of which. One is we're targeting the wrong target in the first place. the second is the composition, the drug matter that we're using doesn't do the job, right?
24:12It's not clear for each individual failure, which one it is or if it's both or what proportion of each and, you know, we'll have to kind of sort that out over time. Like you can imagine even in the case of success when we had 90 % accurate virtual cells, you'll probably end up with suggestions like, okay, now you need to target, you know, we don't have the drug matter. That can do that today. And so that's also why again, you probably need research to figure out novel chemical biology matter that allows you to drug -platropic targets in a tissue or cell type -specific way. Right? And so, I think part of why biology is slow is because there's just this Russian nesting doll of complexity in terms of understanding, in terms of perturbation, in terms of safety, and the crazy thing is the progress in just the short time that I've been doing this is insane, right?
25:16Like I did my, you know, PhD at the Broad Institute in the heyday of developing single cell genomics, human genetics, CRISPR gene editing, you know, and, you know, so many other things. And I think the kind of early 2010s paper is on single cell sequencing would have like 20 cells or 40 cells, right? And at Arkin, the next, you know, kind of end, like, I don't know, relatively short amount of time, we're going to generate a billion perturbed single cells, right? That's, I mean, how's that for a Moore's law? Yeah, that's remarkable. Jorge, I want to hear your answers, a couple of these questions too, as a lead of our bio -practice, both on the GPT -3 moment, what that could look like.
26:00And also, like I'm sure it's If you think it's GOB1s or building off that or if it's going to be something different, and also what's it going to take for the science to kind of reflect itself in the business for the industry to grow? Yeah, so I'll take the second one first, if I could. So I think in terms of where the industry is right now, I think one of the big challenges we have is this Patrick describes very nicely like, you know, discovery is hard and it takes time. And you know, the fail modes are exactly to describe oftentimes when drugs fail, which they do 90 % of the time in clinical trials, it's because we're going after the wrong thing, or we made the wrong thing to go after the right thing, right?
Read the full transcript
26:38Like those are the two fail modes and that happens all too often. And so I think a lot of the stuff that Patrick's describing is going to basically improve our hit rate or our batting average on figuring out what to go after and then making the right thing to go after, set thing. The challenge we have, I think in the industry, is that the bottlenecks still are the bottlenecks and the biggest bottleneck we have, which is a necessary one is we have to prove that whatever we make, that we have the right thing to go after the right thing, so to speak, and that when we have it, that it's going to be as de -risked as possible before you put it into humans.
27:13And we have to be good at making them in the first two. And we have to make them too. Yeah, exactly. And so that bottleneck is a necessarily important one. That bottleneck should exist. I'm not suggesting we better remove it, but are there ways to reduce the cost and time associated with getting through the bottleneck of human clinical trials. And it's interesting because we talk about all of the very stakeholders when you're making a drug. There are the companies, there's of course the science that supported the company that's trying to commercialize a product and they're the regulatory agencies.
27:47Everyone is trying to ensure again that what's first and foremost is the ability to to discover and commercialize drugs that are safe and effective for humans, that middle part of actually getting through that bottleneck is hard to speed up in a very obvious way. Like you can increase the rate, the way you enroll clinical trials. You can use better technology to change the way we design these clinical trials. So maybe they can be faster or shorter, et cetera. But some of them just have a natural timeline. They have to go through. Like if you wanna demonstrate that a cancer drug promotes survival, guess what?
28:19you're going to have it's going to take some time to demonstrate a survival benefit or if you know you want to do a longevity drug That by definition is a lifetime You know of a trial in terms of length. So there's a lot of these bottlenecks are really hard to get through So what helps the industry? I think there are a couple of things that help the industry one is capital intensity Well, hopefully at some point go down over time as technology gets better Capital intensity is something that our industry faces in some ways it looks a little bit like AI now, right? In terms of the cost of training these models, but the capital intensity is very, very high.
28:53That has not come down. So we got to get to success rates up to impact capital intensity to get it down. The second thing is, where can we compress time? So good models can help us compress early discovery time. We still haven't seen, and I think it's coming, but it hasn't happened yet. We haven't seen artificial intelligence or other technologies massively compress the amount of time it takes us to do the clinical development, the clinical trials, the enrollment of patients all those things. We're seeing some interesting things coming. We haven't seen sort of the payoff there yet. And the third thing is if we can make better drugs, going after better things, the effect size should be higher.
29:31So therefore the answer should be obvious sooner. If we can get those three things right, reduce capital intensity, compress timelines, and effectively increase effect size in some very tough sort of intractable diseases, that is what I stage at the early stage in terms of being early stage investors, the reason why that helps us is if the capital intensity goes down and the value creation goes up, it becomes easier to invest in these companies in the early days because you get rewarded for coming in early. The problem we have right now is that most companies aren't, you're not seeing rewards happening when there's value inflection.
30:11So you come in early, you bear the brunt of the capital intensity, and even if a company successful, that success isn't reflected in the valuation. So we're not seeing the stepups that you see in other parts of the industry. And that's just really, really hard from an investing standpoint. So I think we need to see those various factors addressed for this space to really get fixed to use your word. Yeah, that was great. I have a lot to add on to this. Please, add away. Just a few simple observations. The first is the The amount of market cap added to Lily and Novo based on the development of GOP1s, it's like over $3 trillion is more, I mean, no stock has decreased a lot.
30:53So $3 trillion, let's say, is more than the market cap of all bow tech companies combined over the last 40 years have been started. And I think one of the kind of interesting kind of core layers of this is that when we have a 10 % clinical trial success rate for preclinical drug matter, you tend to circle the wagons a bit and try to manage your risk. The way that you try to go after really well -established disease mechanisms, where if I developed new drugs that go after well -understood biology, it should work the way that I hope it will in the trial, which is really expensive and cost a lot more in many ways than the preclinical research.
31:38The problem with this is you go after very well validated disease mechanisms, but with really small patient populations. Then the expected value of this actually is relatively low. One of the things that we've seen with GOP1s is just the value that you can create when you go after really large patient populations. And I think that has culturally ruling net increase the ambition of the industry both from the investor and from the drug developer side. And I think that's something that we should keep our foot on the gas floor. Yeah, and look, I think the trend on that is positive. I would argue the trend on that is positive.
32:21It's perhaps the right, like the demonstration of the value that has been created with the use of increasing use of GLP ones. and the value transfer that's gone to companies like Lily and Nova, I would argue, is very merited because they've cracked an endemic social problem in terms of managing diabetes and eventually helping manage obesity. And so I think that's remarkable. And there's a lot of value that goes to that because they tackled, they cracked a very, very challenging problem for society, beyond just science. So that's great. And I agree with you, like, the prize, the juice needs to be worth the squeeze, right?
32:59You're right, a lot of biotech has been around, like go after the low -hanging fruit because it's low risk and we gotta eat today. So you go get it, you know, and you just have to push off the big ambitious indication, the large population, or the really tough to crack disease. But, you know, I do think we're seeing more and more of that. And by the way, like we can get into some of these genetic medicines, but some of these genetic medicines are going after some of the hardest problems. So things that you quite literally couldn't address, but for editing, you know, DNA. And, you know, I think that's incredibly, remarkable and lottable and frankly inspiring.
33:31But the fundamental element of the industry have to work, so the capital formation is there to support those kinds of things. And right now it's hard, right? Because of the issues we talked about before. Fifteen years from now, we're back in this room. We've barely escaped being part of the permanent underclass. And we're reflecting on the, on sort of the GPT -3 moment or maybe Maybe the legacy of GOP wants sort of beyond where they are now. What do you think could be or where I'm curious to do your take on what do you think is going to be the technological breakthrough that we're going to point back to and say, oh, this is really what set it all that already think it's going to be sort of, you know, multifactored combination.
34:09Yeah, look, I think it's going to go back to sort of where we started this conversation, conversation, excuse me, GOP wants as a drug or, you know, what are four decades in the making or something like that, you know, these are not overnight successes. But I do think what we are going to see more of in our hope is that when you combine the fact that we're getting better at understanding what to target, getting better at designing medicines to hit those targets. By the way, in a whole array of new creative ways. So we have small molecules, the natural products that we got from boiling leaves, as you said earlier, like those have gotten, we're getting really good at designing smarter and better, smaller, small molecules that do new things, that function in ways that they didn't before.
34:56We've gotten quite good at designing biologics or proteins with a lot of help from things like alpha -fold that helps understand how proteins fold. We're going to get a lot better at designing some of the more complex modalities like the gene therapies of the world or the gene editors of the world. And when you can do that and combine that with our ability to hopefully use things like virtual cell models to really understand what to go after, like we're going to have drugs, I would hope and I would expect that the industry will continue to bring forward drugs that have very large effect size for very difficult diseases that hopefully affect a lot of patients.
35:28If that's true, then we'll start to see some of these really, really difficult diseases that affect all of society get tackled. Hopefully, you know, one by one by one by one. And so we have obesity. We have mental bog disorder. We're dealing with cardiovascular mental bog disease. We're starting to see interesting promising things happening in like neurodegenerative diseases, you know, if we can, you know, tackle cancer or at least, you know, several cancers that now have begun to be treated more like a chronic condition than a death sentence that they were in the past. The more we see of that, like, I think that value to society will accrete over time.
36:03And I think this should be an industry that is extraordinarily valued by society and candidly by the markets. We have to deliver. If we play this out, and let's say these AI models work, and you can make a trillion binders in silico that will, you know, exquisite drug matter, right? We still need to make these things physically and test them in animals and hopefully predictive models and then actually in people, right? And I think, you know, that will increasingly be the bottleneck in many ways, right? And, And my friend Dan Wang recently released a book called Breakneck, which talks about the US and China and the difference between the two countries and their philosophy the way they approach markets.
36:53Where the country of lawyers or country of engineers? Exactly. China is an engineering state. It's kind of polyp bros, folks who have engineering degrees, you need to build bridges and roads and buildings. And these are the ways that we solve our problems. Whereas I think from, you know, the first 13 American presidents, 10 of them practiced law from 1980 to 2020, all democratic presidential candidates, both VP and president went to law school. Right. And so you kind of see the echoes of that in the FDA and the regulatory regime and, And all the bottlenecks that people talk about developing drug stateside.
37:39And increasingly, you see folks thinking about how we can run phase one's overseas, build data packages that we can bring back domestically for phase two efficacy trials. I think that's interesting, directionally, but it's not enough. And I think we need to figure out these two bottoms, the making and the testing. Even if we can solve the designing part. Oh, I agree. Yeah, that's the bottleneck. Yeah. You know, we joke about it. And you have to do is you have to get a molecule that can go, you know, first in mice and then in muts and then in monkeys and then in man. Like, there's, you know, that takes a long time.
38:16And it's so hard to compress that. And so when you do, you should make the journey worth, you know, make the journey worth it, right? So when you fail on the other end of that, like, that's obviously horrible. And so finding ways to make sure that when you walk that path, that it'll be a successful journey as often as possible is what this industry desperately needs. Alpha fold solved protein folding problem, but what in itself, judge discovery, or more broadly, what would it take to get AI drugs? What is sort of the bottleneck on the on the sex side at least? On the sex side? Maybe another way to ask the question is that because I always ask the founders a version of this question like the AI ones that are like, oh, we're going to do AI for a life for drug discovery.
39:01So my question that I was like to ask founders is give me examples where you think AI is hyped. Yeah, potentially overly hyped. Um, where there's real hope like the sort of what do we expect? What's next? And where we already see real heft. Yeah. So like if I asked you like an AI, we know where is their hype? Where is their hope? And where are we seeing heft today? I would say there's hype and toxicity prediction models. Okay. So that's the idea that we will say, I'm going to show you a molecule and you're going to tell me the model is going to tell me it's going to be toxic or not. That's right.
39:38Right. Right. There's heft in anything to do with proteins. Right. Obviously protein binding, but increasingly in protein design. Right. And I think there's real heft there. And then, you know, where there's hype is in multi -modal biological models, whatever that means. Right. And I think, you know, pick your favorite layers. It could be, you know, molecular layers. It could be spatial layers. It could be, you know, I mean, actually, I would say there's also heft in the pathology AI prediction models, you know, like, you know, automating the work of pathologists and radiologists. That's that's that's, yeah, powerful use.
40:17Yeah. Yeah. And there's a lot of stuff where you don't have to train, you know, weird biology foundation models and you can write, you know, regulatory filings and reports and things like that. That's impactful and important. So now I go back to Eric's question. Why hasn't AI turned out drugs yet? I think that was your question, right? You know, AI for drugs is one of these weird things where everyone who works in industries trying to claim that their drugs like the first day of design molecule, right? I feel like in, you know, I mean increasingly in just a few years, this will just be a native part of the stack.
40:57Just like we use the internet and we use phones, we're going to have AI and all parts of the stack, right? And so it's just going to become a native part of everything that we do. And so why hasn't it worked yet? Is this long multifactorial process that we've been talking about today? There's designing, there's the making, there's the testing, there's the approvals side of it. I think I do think safety and efficacy as the two pillars in the industry are the two things that we need to get right. We need to be able to figure out faster ways that we can predict whether or not molecule will work. If it's going to be safer not, I mean, there are ways that AI can operationalize this.
41:44If you designed a small molecule, you could now computationally docket to every protein in the proteome and see if it's likely to bind to off -target molecules. You can use this to tune binding selectivity and affinity that might be ways to predict, you know, safety and efficacy, right? And, you know, how will that work? Well, that's a feedback loop that we'll have to actually test in the lab. And that's part of what's slow is the testing, you know, takes real hours, days, months, right years. And you know, that's really why we've picked at our virtual cell models as our initial ledge because we think it can integrate a lot of these different pieces.
42:26In Dario Amade's essay, Machines of Love and Grace, he predicts among other things the prevention of many infectious diseases and the doubling of lifespan perhaps in as soon as the next decade. What's your reaction to his essay? His bullishness in some of his predictions? I think the core intuition that Dario had was the idea that sign like important scientific discoveries are independent, right? Or they're largely independent. And if they are, you know, statistically independent, then it would stand to reason that we could multi -paralyze. And so we had models that were sufficiently predictive and useful.
43:04You could have not just a hundred of them, but millions, billions of these discovery agents or processes running at a time, which should compress the timeline to new discoveries and turn it into a computation problem. I think that is a very futuristic framing for something that is actually very tangible today. If we can have original cell models at work, for example, that can start to do these kinds of things that we've been talking about help us, we can have molecular design models, we can have docking models, we can then have when you bind to this thing in this cell versus all the other off -target proteins will a cell be corrected in the right way.
43:53These layers of abstraction and complexity start to get to things that feel very tangible to drug discovery. If you could actually traverse these steps reliably and in sequence, you could start to see how you can get the compression, right? And so I think in the long run of time, this should be possible. One of the course depositions in building a good virtual cell model is that we are feeding it all the relevant data. The right data, yeah. The right data. And so we'll work to, you know, it's gene expression data or it's DNA data or, you know, any number of factors, protein and protein interactions, all the things you describe.
44:36What if we're missing a core element? Like what if we just haven't discovered the core or whatever? Like we just don't know what we don't know. And therefore, what we're feeding the model is fundamentally or importantly incomplete. I think that's almost certainly true, right? Like, it seems almost obvious that we're not measuring many of the most important things in biology, right? And you can of course find many important exceptions for any of these measurement technologies. Like in biology, we ultimately have two ways to study it in high -throughputs, imaging and sequencing, right? But there are so many other types of things that you would care about that those things aren't necessarily going to do a scale, right?
45:18And that's really why I think the stuff that we're talking about of the RNA layer as a mirror for other layers of biology is one that we've spent a lot of time thinking about. And there's a difference between a mechanistic model and a meteorological simulation type of model. So for example, if you want to predict the weather, right, you can build AI models that will predict whether or not it will rain next Tuesday, it won't explain physically or geologically or whatever, why and how that happens. But as long as it knows if it's going to rain next Tuesday, you're probably happy, right? And I would say similarly with a virtual cell model, it may not tell me literally why.
46:02Just like a alpha -fold doesn't tell me literally why did the protein fold this way and how. But it just told me the end state and it was reasonably accurate. I think that would already be very important. And shifting gears a little bit, we've been talking about science and biotech, but you're in addition, you're an elite AI investor more broadly. So I want to talk about how you're, I want to talk about where your investment focus is right now, just as it relates to AM more broadly. Where are you excited? Where are you spending time? Where are you looking forward to? Oh, yeah. My goal is to really try to figure out ways that we can improve the human experience in our lifetime.
46:38I kind of think of, like if I think about the future that we're going to leave to our children, right? There are a few things that if we get them right in our lifetime, we'll fundamentally change the world, right? And, you know, how we live in it. I think synthetic biology is obviously one, right? You know, think, you know, GOP ones, right? Things that improve sleep, right? Things that can, you know, improve longevity, right? These are all things that are kind of easy to get excited about. I think brain computer interfaces is another area where we're going to see really important breakthroughs over the decades to come.
47:20And then I think the third is in robotics, both industrial and consumer robotics, right? That allows to basically scale, physical labor in interesting ways. And you can see how each of these three things, even in the sort of medium cases of success really kind of changed world. And so I'm very interested in helping make these kinds of things possible. Right. And so there's sort of, you know, in the kind of techno optimist sort of vision of the world, right? There's a few different types of scarcity. Right. There's, you know, it's very easy when you do research to come up with important ideas. The hard thing is to tackle them in the right time frame.
48:05Right? It's like, you know, writing futuristic sci -fi things is not that hard. Being able to actually execute on it in the next five years or eight years, much, much harder. Right? And I would say, you know, academic discovery is littered with plenty of ideas that are interesting and important, but, you know, kind of long before their time. And in many ways, the story of technology development is, you know, trying to use new technologies to solve old tricks. Right? Like most of our tools are, you know, for productivity, right? In many ways, whether that's the industrial revolution or the computer revolution or the current AI revolution, we're trying to kind of do the same stuff.
48:43And, you know, and so there, you know, I think there's a relatively small set of very powerful ideas. New technologies give us new opportunities to attack them. And there's a set of people and teams that are going to be positioned to be able to do that. they need to have technical innovation and then an intuition about product and business in a way that, you know, you know, you kind of in the RPG dice roll of the skills that you get in these three domains, people start at different base levels, right? And, you know, you might have an incredibly technical founder who doesn't know how to think commercially, or someone who's just natively a very commercial thinker who, you know, it doesn't have very strong product sense, right?
49:24Even though they could sell the crap out of it, right? And And so I think these sort of, this sort of three broad categories of capabilities, you need kind of bring together in a way that you can allocate capital to in the right times in order to make these ideas possible in a really differentiated way. Like, this thing literally wouldn't happen if we didn't get these people together and fund it at the right time in the right way, right? And that's really what motivates me. And these are the kinds of things that I've been excited about, you know, backing, you know, longevity companies like Neuliman, right?
49:59BCI companies like Nudge, right? Robotics companies like the bot company, right? You know, these are some of the examples of kind of, you know, things that I think must happen in the world and man, therefore it should happen and you know, how do we actually find the right people and the right time to actually kind of Go on the fellowship of the ring hunt. Yeah, yeah If not too difficult, I want to ask Jorge's question adopted to these additional spaces, robotics, sort of BCIs and longevity of appropriate terms and the three questions I believe were, what's overhyped, where do you see an opportunity or path and what's got half to all right?
50:41I think the cool thing about agents generally is that they do real work, right? It compared to like SaaS companies that came before, agents replace real productivity. And I think they have a lot of errors today. And I would say the computer use agents will probably trail the coding agents by maybe a year. But it's coming and we'll follow the trajectory as these go from doing minutes of work without error to hours to days. And I think you're gonna get a completely different and product shape as we march through that across legal, BPO, medicine, healthcare, whatever, right? And we'll kind of follow that as an industry and that's gonna be really exciting.
51:30And I think that's where we're gonna see real heft is because mostly the economy service is spent. It's not software spent. And the reason why we're all excited about this stuff is that it can attack the services economy. And I would say, where is there hype? there's tremendous amount. That's that's that's no doubt. The hype is in the model capabilities. Right. And you know, we were working with an architecture that dates back to 2017. And if you look at the history of deep learning, it's like, kind of every eight years, there's something really different. And we feel like in 2025, we're really overdue for some net new architecture.
52:14And I think there are lots of really interesting research ideas that are bubbling up that could do that thing. And in many ways, there's a set of really interesting academic ideas, especially in the golden age of machine learning research from, I don't know, like 2009 to 2015, right? There's so many interesting ideas and little archive papers that have like 30 citations or less. And as the marginal cost of compute goes down year on year, I think you're going to be able to take all of these ideas and actually scale them up, right? Where you don't see the scaling laws when you're training them at 100 million or 650 million parameters like back then.
52:53But if you can scale them up to 1B, 7B, 35B, 70B, right? You start to see, whether or not these ideas will pop, right? And I think that's very exciting because because there's just going to be a lot of opportunity for new super intelligence labs to do things beyond what the established foundation model companies are doing today. In addition to these research teams, these are in many ways becoming applied AI companies. They need to build product shape and all kinds of different enterprises and do RL for businesses and make money, right? And I think or or or build coding agents and make API revenue and that's important.
53:37And I think, you know, a timely race to survive today. But I'm just, you know, a very blush on the research of say like a Sikana AI, right? Which was founded by one of the authors of Attention is All You Need, right? Ian Jones and they're doing incredibly interesting stuff on model merging and how you can have a evolutionary selection of different models in MOE. And I think they are opportunities here in the long run to move beyond just RL gyms, for example, also to figure out new ways to learn and find reward signals is going to be really exciting. It's a great place to wrap. Gearing towards closing anything upcoming for ARC that you'd like us to know about anything you want to tease, for people who want to learn more, which they know about.
54:34So AlphaFull, in many ways, came out of a protein folding competition called CASP, a critical assessment of the structure of proteins. And we created our own virtual cell challenge, at VisualSaleChallenge .org where we have, you know, $100 ,000 prizes sponsored by Nvidia and 10X genomics and Ultima and others. And it's an open competition that anyone can enter where you can train perturbation prediction models and we can openly and transparently assess these model capabilities both today and in subsequent years, follow them to get to that that chatch -ypt moment, right? And so I'm extremely excited about this.
55:15You know, we like more people to, you know, train models and apply both bio -ML experts and engineers in any other domain. And, you know, I'm, you know, I just, I want this thing to exist in the world. You know, hopefully we're important parts of making that happen, but I just be happy that someone does it. Yeah. That's inspiring note to wrap on. Patrick, well, hey, thanks so much for the conversation. Thanks so much, guys. Yes, we should wrap it.
55:47Thanks for listening to the A16Z podcast. If you enjoyed the episode, let us know by leaving a review at ratethispodcast .com slash A16Z. We've got more great conversations coming your way. See you next time. As a reminder, the content here is for informational purposes only. Should not be taken as legal business, tax, or investment advice, or be used to evaluate any investment or security and is not directed at any investors or potential investors in any A16Z fund. Please note that A16Z and its affiliates may also maintain investments in the companies discussed in this podcast. For more details, including a link to our investments, please see A16Z .com forward slash disclosures.
From the publisher
Can we make science as fast as software?
In this episode, Erik Torenberg talks with Patrick Hsu (cofounder of Arc Institute) and a16z general partner Jorge Conde about Arc’s “virtual cells” moonshot, which uses foundation models to simulate biology and guide experiments.
They discuss why research is slow, what an AlphaFold-style moment for cell biology could look like, and how AI might improve drug discovery. The conversation also covers hype versus substance in AI for biology, clinical bottlenecks, capital intensity, and how breakthroughs like GLP-1s show the path from science to major business and health impact.
Resources:
Find Patrick on X: https://x.com/pdhsu
Find Jorge on X: https://x.com/JorgeCondeBio
Stay Updated:
Find a16z on X
Find a16z on LinkedIn
Listen to the a16z Podcast on Spotify
Listen to the a16z Podcast on Apple Podcasts
Follow our host: https://twitter.com/eriktorenberg
Please note that the content here is for informational purposes only; should NOT be taken as legal, business, tax, or investment advice or be used to evaluate any investment or security; and is not directed at any investors or potential investors in any a16z fund. a16z and its affiliates may maintain investments in the companies discussed. For more details please see a16z.com/disclosures.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

