Richard Scolyer, first patient for a Glioblastoma vaccine, is 10 months in and counting. (I'm not sure if it's mRNA based.) The treatment was vaccine, followed by surgery to remove the tumour, followed by more vaccine to prevent recurrence. The vaccine course is up to 8 out of 10 planned doses. So far it hasn't come back.
https://www.facebook.com/ProfRScolyer
https://en.wikipedia.org/wiki/Richard_Scolyer#Cancer_diagnos...