Turns out the RNA tech behind COVID vaccines was originally designed to fight cancer—and it’s showing serious promise. A new RNA-based treatment slashed the risk of worsening or death by nearly half for a tough-to-treat breast cancer type (HER2-positive metastatic), marking the first big breakthrough in over a decade. Researchers are also pairing RNA with AI to create personalized cancer vaccines, hinting at a future where treatments are custom-fit to each patient’s tumor.

Editor’s Note: This isn’t just about one drug—it’s a glimpse into how pandemic-era science is turbocharging cancer care. The fact that RNA vaccines, once a niche oncology project, are now delivering real results (and fast) suggests we’re on the cusp of a much bigger shift. For patients with limited options, that’s hope wrapped in hard data. Plus, the AI angle? That could turn cancer treatment into a precision strike instead of a guessing game.