Quote of the Day

I have never seen a single week in medicine like the one we just lived through.
In the span of a few days, four separate scientific breakthroughs landed. The stock market treated them as four unrelated stories and sent a handful of biotech companies soaring. But that’s the shallow read. Look closer and they are not four stories at all. They are four faces of the same story — the biggest shift in medicine since the discovery of antibiotics.

Medicine is becoming programmable. Individualized. Written for one human being instead of the average of millions.

Afshine Emrani MD FACC @afshineemrani
Posted on X August 22, 2026

Here are some of the details:

tart with the old world, so you can feel what’s ending.
For the entire history of medicine, we have treated the average patient. The average dose on the label. The average risk from the population study. The average tumor, the average cholesterol, the average heart. We took what worked for the middle of the bell curve and applied it to you, and then adjusted by trial and error when you didn’t respond like the average.

But you are not average. Your cancer, if you get one, will carry a set of mutations no other cancer on Earth has ever had. Your heart disease is driven by your specific genes, your specific biology. The one-size-fits-all model was never a choice we made — it was a limitation we couldn’t escape, because we lacked the tools to read and write biology at the level of the individual.

…

Here’s the old reality for high-risk melanoma. Surgeons remove the tumor, and then we tell the patient: “We got what we could see. Now take Keytruda, and we hope the microscopic cells left behind don’t come roaring back.” And too often, they came back — in the lungs, the liver, the brain.

Now here’s what just changed. Scientists take that removed tumor, sequence its DNA, and compare it letter by letter to the patient’s healthy DNA. The differences — the mutations unique to that cancer — produce abnormal proteins called neoantigens that exist essentially nowhere else in the body. An algorithm picks up to 34 of the best targets. Those get encoded into a custom mRNA vaccine, manufactured for that one person, that teaches their immune system to hunt any cell wearing those markers. In the 1,137-patient Phase 3 trial, the vaccine plus Keytruda beat Keytruda alone — less recurrence, less spread to distant organs. It’s the first time in the history of medicine an mRNA cancer therapy has won a Phase 3, and trials in lung, bladder, and kidney cancer are already running.

…

A company called Scribe just went public with an experimental one-time treatment aimed at the single biggest killer of human beings on the planet: heart disease. Not a new pill to add to your seven others. A one-and-done.

Here’s the elegance of it. You may have heard of CRISPR as “gene editing” — molecular scissors that cut DNA. That’s powerful but scary, because cutting DNA is permanent and mistakes can’t be undone. Scribe’s approach does not cut your DNA. Instead it uses a disabled version of CRISPR to place a chemical “off switch” — an epigenetic mark — on a single gene called PCSK9. PCSK9 is one of the master controllers of bad cholesterol. Silence it, and LDL plummets. And because the DNA sequence itself is never altered, the effect is designed to be reversible if it ever needed to be.

There is more. But you get the idea.

I like living in the future.