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Home » Transcript: Immunologist Garry Nolan’s Interview on Joe Rogan Experience #2372

Transcript: Immunologist Garry Nolan’s Interview on Joe Rogan Experience #2372

Read the full transcript of immunologist Garry Nolan’s interview on The Joe Rogan Experience Podcast #2372, August 28, 2025.

Introduction and Background

JOE ROGAN: Garry, very nice to meet you, sir.

GARRY NOLAN: Nice to meet you as well.

JOE ROGAN: Thank you for doing this. I really appreciate it. Tell everybody what you do. Tell everybody what your official position is. You’re a professor at the school of Medicine at Stanford. What do you do?

GARRY NOLAN: So my day job is in cancer research and cancer biology, mostly immunology and cancer. Much of what my laboratory does is not so much the biology of cancer, but developing instruments that create the data, that allow us to analyze the complexities of how the immune system interfaces with tumors and how tumors basically re-enable the immune system to help the cancer itself.

So the problem’s been we don’t have the ability to collect enough data, or not until recently, to collect and understand what all of that means. So we’ve been kind of poking in the dark for decades. And so probably for the last 20 years, I’ve developed a number of instruments and turned them into companies that allow everybody to access a level of information they couldn’t get before.

How Cancer Tricks the Immune System

JOE ROGAN: So explain that. The immune system allows the tumors.

GARRY NOLAN: So what happens is that there’s sort of a dance between the mutations that initiate a tumor and then sort of an evolution of how the tumor eventually learns how to trick the immune system to not recognize it. So we have all kinds of internal mechanisms. I mean, literally every day, every person, you’ll develop five cancer-like objects inside of your body. But the immune system and your body has a way of shutting it down very quickly.

But with enough time and with enough variation, tumors will eventually evolve in a way that trick the immune system not only into not recognizing them, but in fact, to help them and feed them in a way to create an inflammatory environment that actually then the tumor uses to propagate its own cell division and then metastasis.

JOE ROGAN: So it’s a normal function of natural human biology to create tumors.

GARRY NOLAN: It’s not so much a normal function. It’s a byproduct of what evolution is, that when the genes mutate, when a cell divides, or if you go out and stand in the sun too much, for instance, you get skin cancers because you’re getting ionizing radiation that’s changing the DNA, making a mutation. And some of those random mutations will initiate a cancer.

So, for instance, I have a mutation called MITF. It’s a mutation that I was born with. It wasn’t in my family. And it causes both melanoma and kidney cancer, which I’ve had both. I’ve had a dozen melanomas alone. We didn’t find that out until a couple of years ago, but I’ve been following it over the years, and we basically figured out, okay, it’s going to have to be this. So we had my genome sequenced.

But there’s that’s just one of hundreds of different kinds of mutations that can occur that are on a path towards creating a cancer. But the cancer can’t survive if the immune system recognizes it. So eventually what happens is there’s this détente that is reached between the immune system and the cancer, where the immune system basically ignores the cancer.

So Jim Allison here in Houston won the Nobel prize back in 2018 for understanding one of these turn-off signals that the immune system that their cancers use to turn off the immune system. And that by showing he could block his wife, Pam Sharma ran a bunch of clinical trials at MD Anderson that showed in fact, that this could actually turn a 5% survival disease in melanoma to a 50% survival. And that then created the whole immunotherapy field that the world is taking advantage of today.

Cancer’s Evolutionary Battle with the Immune System

JOE ROGAN: Wow. So what is cancer actually doing? How do tumors develop this ability to trick the immune system? Is this something that other animals have?

GARRY NOLAN: Oh, yeah. Oh, yeah.

JOE ROGAN: So it’s a constant.

GARRY NOLAN: It’s a constant battle. So, for instance, there are proteins on your cell surface, and we’ll get too immunologically deep about it. They’re called major histocompatibility complex proteins. So, for instance, if I were to try to just randomly do a tissue transplant from me to you, it’s very likely that it would be rejected. And it’s because of those MHC proteins that it’s rejected.

What’s happening is that your cells are presenting your internal cell biology to the immune system. And it’s saying, “Okay, you’re a friend, not a foe.” So when cancer usually initiates, there are disruptions that happen and proteins are made incorrectly, et cetera. And so what these MHC proteins are doing in some cases is they’re presenting the internal damage to the body. And the body’s saying, “Oh, there’s something wrong with this cell. We better wipe it out. We kill it.”

These same proteins are what the immune system uses, for instance, to go after viruses. So when you get a virus infection inside of the cell, the body has a way of chopping those proteins up inside of the cell, presenting it via MHC and then the immune system attacks it. So one of the first things that actually tumors do is they learn to turn off the MHC proteins inside of themselves. So the ability to show that “I’m damaged” is shut down. And so the immune system doesn’t go on full alert for that.

But then there are other mutations, like divide when you’re not supposed to, avoid this kind of induced cell death called apoptosis, and others. And so cancer doesn’t just start and then the next day you’ve got it. It’s a progression of events. You have these precancerous lesions. You have a benign tumor, which eventually becomes a metastatic tumor.