Cuba's lung cancer vaccine

"To be fair, Cimavax probably won’t be a game-changing cancer drug in its current form. The vaccine doesn’t attack tumors directly, instead going after a protein that tumors produce which then circulates in the blood. That action spurs a person’s body to release antibodies against a hormone called epidermal growth factor, which typically spurs cell growth but can also, if unchecked, cause cancer. (Although most people normally think of a vaccine as something that prevents a disease, technically a vaccine is a substance that stimulates the immune system in some way.) So the point of Cimavax is to keep lung tumors from growing and metastasizing, turning a late-stage growth into something chronic but manageable." More in the article Cuba has a lung cancer vaccine-and America wants it by Neel V.Patel (via Lambert Strether in Naked Capitalism)