I understand the same.

Here is an article stating it: "The Moderna/Merck vaccine is personalized, meaning the mRNA sequences it delivers are tailored to each patient. And it is intended to prevent recurrence of cancer rather than prevent cancer in the first place. But in other ways, the jab is similar to mRNA vaccines for COVID-19." Source: https://cen.acs.org/pharmaceuticals/vaccines/ModernaMerck-cancer-vaccine-shows-promise/100/web/2022/12