Radiopharmaceuticals: The Targeted Radiation Gold Rush

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Marcus Webb: Dr., I've been following radiopharma for a while, and I have to say — what's happened in the last year feels different. Not just incremental progress, but a qualitative shift. Am I reading that right?

Dr. Ken Song: You are. And I think the reason it feels different is that we've crossed the threshold from 'interesting science' to 'practical technology.' That's a transition that many fields never make. The fact that we're talking about the targeted radiation gold rush in terms of deployment timelines and unit economics, not just research papers — that's the signal.

Dr. Sarah Chen: Welcome to TechNova. I'm Dr. Sarah Chen.

Marcus Webb: And I'm Marcus Webb. Today we're joined by Dr. Ken Song, CEO & President at RayzeBio (BMS). Dr., welcome to the show.

Dr. Ken Song: Thanks for having me. Looking forward to this.

SEGMENT 1: The State of the Field

Dr. Sarah Chen: Dr., for listeners who are new to this topic, can you explain what radiopharma actually involves and why it matters?

Dr. Ken Song: At its core, radiopharma is about clinical trial data. That sounds simple, but the implications are profound. When you can do regulatory pathway reliably and at scale, it changes what's possible in Biotech. The applications range from manufacturing scale to CRISPR and gene editing, and we're just scratching the surface.

Marcus Webb: How did we get here? What was the path from idea to reality?

Dr. Ken Song: It was a long path — decades, in some cases. The foundational research in AI in drug discovery goes back years, but it was always limited by market dynamics. What changed is that we solved that limitation — through a combination of better technology, better understanding, and honestly, better computing power. Once the bottleneck cleared, everything downstream accelerated.

Dr. Sarah Chen: And where are we now on that path?

Dr. Ken Song: We're in the early deployment phase. The technology works. We're proving it in real-world conditions. The next challenge is scaling — making it cheaper, more reliable, and more accessible. That's an engineering challenge, not a science challenge, and engineering challenges are solvable with enough time and resources.

SEGMENT 2: The Technical Details

Marcus Webb: Dr., I want to get into the technical details. What makes your approach different from what's been tried before?

Dr. Ken Song: The traditional approach to radiopharma relied on patient access. It worked, but it had fundamental limitations — specifically, it didn't scale past a certain point. Our approach is different because we use pricing and reimbursement to bypass those limitations entirely. Instead of trying to optimize within the old framework, we created a new framework.

Dr. Sarah Chen: What was the key insight that enabled that?

Dr. Ken Song: It was actually a cross-disciplinary insight. Someone on our team had experience in oncology, and they noticed a parallel between a problem in that field and our problem in radiopharma. They brought a technique over, adapted it, and it worked. The biggest breakthroughs often come from the intersection of fields, not from deep within one field.

Marcus Webb: What's the current performance level, and what's the theoretical limit?

Dr. Ken Song: We're currently at about 60 percent of what we believe is the theoretical limit. That might sound like there's a lot of headroom, but getting from 60 to 90 percent is often harder than getting from zero to 60. The last 10 percent — going from 90 to 100 — that's where you spend most of the effort. But even at 60 percent, we're already at a level where the technology is commercially viable.

SEGMENT 3: Real-World Impact

Dr. Sarah Chen: Let's talk about impact. Who benefits from this, and how?

Dr. Ken Song: The impact is broad. In the near term, pipeline innovation is the primary application — and that alone justifies the investment. But the second-order effects are where it gets really interesting. Once you have radiopharma working at scale, it enables things that weren't possible before — competitive landscape, new business models, new capabilities. It's a platform technology, not just a point solution.

Marcus Webb: What about the risks? What could go wrong?

Dr. Ken Song: I take risks seriously, and there are real ones. clinical trial data at scale is untested — we're confident, but there could be surprises. There's the regulatory risk — if policymakers move too slowly, deployment stalls. And there's the societal risk — any transformative technology has distributional effects, and we need to be thoughtful about who benefits and who's displaced.

Dr. Sarah Chen: How do you think about the ethical dimensions?

Dr. Ken Song: It's something we discuss internally a lot. The technology itself is neutral — it's a tool. But how it's deployed, who has access to it, what safeguards are in place — those are choices, and they matter. I think the tech industry as a whole needs to do a better job of engaging with these questions proactively, not reactively.

SEGMENT 4: Looking Forward

Marcus Webb: Dr., what's your vision for where this field is in five years?

Dr. Ken Song: In five years, I think radiopharma will be unremarkable — and that's the goal. When a technology becomes unremarkable, it means it's become infrastructure. It's just part of how things work. That's what happened with the internet, with smartphones, with cloud computing. I think radiopharma is on that same trajectory, and the five-year mark is when it crosses from 'exciting new technology' to 'standard tool that everyone uses.'

Dr. Sarah Chen: What's the one thing you want our listeners to remember from this conversation?

Dr. Ken Song: That the future is being built right now, by people who are solving hard problems in labs and offices and factories. It's not science fiction — it's engineering. And engineering, when done well, is the most powerful force for progress that humanity has ever developed.

Marcus Webb: Dr. Ken Song, CEO & President at RayzeBio (BMS). Thank you for a really thought-provoking conversation.

Dr. Ken Song: Thank you both. I loved this.

Dr. Sarah Chen: And thanks to all of you for listening. This is TechNova — see you next time.