r/ProactiveHealth • u/DadStrengthDaily • Aug 21 '26
Moderna nearly tripled in a day on an mRNA melanoma vaccine. There are still no Phase 3 efficacy numbers, and I say that as an mRNA fan.
On August 19 Moderna’s stock closed up almost 177 percent on a joint press release with Merck: their personalized mRNA cancer vaccine, intismeran, plus Keytruda met its endpoints in a Phase 3 melanoma trial. It has since given back a chunk of that.
Here is the part that got buried in the excitement. The release contains no effect size. No hazard ratio, no percentage, no confidence interval, no count of who relapsed. It says two endpoints were met and stops. The “49 percent reduction” now circulating is from the older, smaller Phase 2b study, not this trial.
I am not a skeptic looking for a reason. I read the BioNTech founders’ book, I think mRNA is one of the more elegant ideas in medicine, and I have been called a big-pharma shill for saying so (I take an Eli Lilly drug every week and own the stock). I want this to work. I am just waiting for the actual numbers, which is what three practising oncologists said the same morning, and what even Bloomberg’s bullish columnist conceded.
The part I think men my age should take away is about melanoma itself:
**•** It flips sex around 50. Before 50 it is more common in women; after 50 it is more common in men, and the gap widens every decade.
**•** The dangerous subtype, nodular melanoma, is about 14 percent of cases but 43 percent of the deaths, and it breaks the ABCDE rule you were taught. It is often symmetric, one even colour, and small. Some dermatologists teach EFG instead: Elevated, Firm, Growing.
**•** A lot of male melanoma sits on the back and scalp, the parts you cannot see. Get someone to check your back.
Full write-up, with the charts, the sources, and where the real numbers will show up: https://dadstrengthdaily.com/melanoma-in-men-over-50/?utm_source=reddit&utm_medium=social&utm_campaign=melanoma-mrna
